HI
Is there a reason to not use the built in SD backup tool? This
works well for me.
Marty kd8bj
On 8/14/21 12:58 PM, Fred Hillhouse
wrote:
toggle quoted message
Show quoted text
I
am not using Hampi but I recently made a backup ?of my image
on my PiZ-W. I think I used instruction I found on Raspberry
forum. I backed up to an USB drive then restored to a new
uSD. I am currently using my back up so I know it works.
?
Fred
N7FMH
?
From:
[email protected]
[mailto:[email protected]] On Behalf Of David
AJ6RE
Sent: Friday, August 13, 2021 8:34 PM
To: [email protected]
Subject: [RaspberryPi-4-HamRadio] SD Cards Erased
Upon Removal? #hampi #hardware #pi #raspberrypi #usability
?
After successfully using my Rpi 4 B+ for a
few months as part of my homebrew mobile manpack rig I decided
to back up the SD card prior to installing a GPS dongle. I did
a sudo shutdown -h now and powered down. When I stuck the SD
card it into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new
card, installed Hampi again, started reconfiguring Flrig etc.,
Then I decided to double-check the new card. I did the
graceful shutdown before pulling the card out but evidently
wiped that one as well at some point in the process. All files
were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi
shut down all the way before pulling the card. I did not know
to wait for flashing lights after shutting down. However, I'm
pretty sure I powered it down all the way after several
seconds.?After spending hours flashing cards and looking
forward to the prospect of going back to square one yet again
and then reconfiguring the software again, and hoping it
doesn't happen a third time, I am thinking the pi may just be
too fragile a system to rely upon for emergency/mobile comms.
It seems crazy that the SD card should be so vulnerable to
erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I
was using as a keyboard/screen interface to host the software
and cut out the Pi. It's a shame since I've invested countless
hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
| |
This email has been checked for
viruses by Avast antivirus software.
|
|
I am not using Hampi but I recently made a backup ?of my image on my PiZ-W. I think I used instruction I found on Raspberry forum. I backed up to an USB drive then restored to a new uSD. I am currently using my back up so I know it works. ? Fred N7FMH ?
toggle quoted message
Show quoted text
From: [email protected] [mailto:[email protected]] On Behalf Of David AJ6RE
Sent: Friday, August 13, 2021 8:34 PM
To: [email protected]
Subject: [RaspberryPi-4-HamRadio] SD Cards Erased Upon Removal? #hampi #hardware #pi #raspberrypi #usability ? After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
|
|
This email has been checked for viruses by Avast antivirus software.
|
|
Hello Dave,
Yes, you're right.. you can install third party utilities or install the optional WSL sub-system on Windows10
to read/write Linux filesystems but my point is still valid
for STOCK Windows.? Stock Windows cannot read/write most Linux and
other UNIX file systems but it should be able to read the FAT32
/boot partition.? If it cannot, there is something else wrong and
I would suspect the SD card reader.
--David
KI6ZHD
On 08/14/2021 09:24 AM, Dave Wade
wrote:
toggle quoted message
Show quoted text
David,
There are tools that allow a an EXT4 file
system to be viewed on a Windows PC for example
?
?
but there are other tools¡.
?
Dave
G4UGM
?
?
Hey David,
A micro SD card with a working copy of Raspberry Pi OS has two
partitions on the card:
?? - Partition 1 - FAT32 file system - holds /boot : A windows
or Mac computer can read / write these files
?? - Partition 2 - EXT4 file system - holds all other parts of
the OS, home directories, etc.: A Windows or Mac computer will
NOT be able to see this file system or read/write any of these
files
You can see these partitions using the Linux command (here is
an example for a Samsung 16GB micro-SD card):
?? sudo fdisk -l /dev/mmcblk0
?? --
?? Disk /dev/mmcblk0: 14.9
GiB, 15931539456 bytes, 31116288 sectors
?? Units: sectors of 1 * 512 = 512 bytes
?? Sector size (logical/physical): 512 bytes / 512 bytes
?? I/O size (minimum/optimal): 512 bytes / 512 bytes
?? Disklabel type: dos
?? Disk identifier: 0x92f034a6
?? Device???????? Boot Start????? End? Sectors? Size Id
Type
?? /dev/mmcblk0p1?????? 8192??? 93813??? 85622 41.8M? c
W95 FAT32 (LBA)
?? /dev/mmcblk0p2????? 94208 31116287 31022080 14.8G 83
Linux
?? --
I think the issue that you're seeing here is an issue with
your SD card *reader* on your other PC.? What *capacity* is
your MicroSD card?? Is it larger than 32GB?? What is the
labeling on your SD card reader? ? Does it have writing on the
card showing compatibility for:
?? - SD
?? - SDHC
?? - SDXC
?? - MMC
If I was to guess, you have a 64GB card and you're reader
either doesn't have or has incomplete SDHC support.? I have
been bitten by older SD card readers mis-reading bigger SD
cards and if they seemed to read ok, writing to them would
corrupt the SD card's file system.? It's really unacceptable
that this is possible but I can personally tell you it *IS*
possible and has happened to me a few times before.? If this
is your scenario, I would recommend to *recycle* that old SD
card reader and get something newer that has proper SD card
support to avoid trashing future card events.
--David
KI6ZHD
On 08/13/2021 05:34 PM, David AJ6RE
wrote:
After successfully using my Rpi 4 B+ for
a few months as part of my homebrew mobile manpack rig I
decided to back up the SD card prior to installing a GPS
dongle. I did a sudo shutdown -h now and powered down. When
I stuck the SD card it into my PC it was blank, save for the
volume label.?
After failed attempts to recover the data, I flashed a new
card, installed Hampi again, started reconfiguring Flrig
etc., Then I decided to double-check the new card. I did the
graceful shutdown before pulling the card out but evidently
wiped that one as well at some point in the process. All
files were gone but for a couple of text files and the
volume label.
Subsequent online research indicates maybe I didn't let the
pi shut down all the way before pulling the card. I did not
know to wait for flashing lights after shutting down.
However, I'm pretty sure I powered it down all the way after
several seconds.?After spending hours flashing cards and
looking forward to the prospect of going back to square one
yet again and then reconfiguring the software again, and
hoping it doesn't happen a third time, I am thinking the pi
may just be too fragile a system to rely upon for
emergency/mobile comms. It seems crazy that the SD card
should be so vulnerable to erasure simply by being extracted
from the Pi.?
At this point I am planning on just using the Toughbook that
I was using as a keyboard/screen interface to host the
software and cut out the Pi. It's a shame since I've
invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
?
|
Hi Having used the Raspberry Pi? (3, 4 and Zero) for Amateur TV projects (in particular the Portsdown Digital Amateur TV Transceiver?) for the past 5 years, including literally hundreds of card builds, I can say that I have never seen this happen. I would suggest one of 3 possible explanations:
- The operating system that you are looking at the removed card with cannot see the Linux partitions used by the Raspberry Pi
- You have a Raspberry Pi hardware fault
- You are using sub-standard or non-compatible SD Cards.? The Red and Grey SanDisk Ultra cards cost about $5 and are worth their weight in gold for reliability.
Even if you removed the card before shutdown, it would still have the Linux file system on it.? (I have done it, and the card survived). Hope that helps Dave, G8GKQ
|
David, There are tools that allow a an EXT4 file system to be viewed on a Windows PC for example ?
? but there are other tools¡. ? Dave G4UGM ?
toggle quoted message
Show quoted text
From: [email protected] <[email protected]> On Behalf Of David Ranch
Sent: 14 August 2021 16:58
To: [email protected]
Subject: Re: [RaspberryPi-4-HamRadio] SD Cards Erased Upon Removal? #hampi #hardware #pi #raspberrypi #usability?
Hey David,
A micro SD card with a working copy of Raspberry Pi OS has two partitions on the card:
?? - Partition 1 - FAT32 file system - holds /boot : A windows or Mac computer can read / write these files
?? - Partition 2 - EXT4 file system - holds all other parts of the OS, home directories, etc.: A Windows or Mac computer will NOT be able to see this file system or read/write any of these files
You can see these partitions using the Linux command (here is an example for a Samsung 16GB micro-SD card):
?? sudo fdisk -l /dev/mmcblk0
?? --
?? Disk /dev/mmcblk0: 14.9 GiB, 15931539456 bytes, 31116288 sectors
?? Units: sectors of 1 * 512 = 512 bytes
?? Sector size (logical/physical): 512 bytes / 512 bytes
?? I/O size (minimum/optimal): 512 bytes / 512 bytes
?? Disklabel type: dos
?? Disk identifier: 0x92f034a6
?? Device???????? Boot Start????? End? Sectors? Size Id Type
?? /dev/mmcblk0p1?????? 8192??? 93813??? 85622 41.8M? c W95 FAT32 (LBA)
?? /dev/mmcblk0p2????? 94208 31116287 31022080 14.8G 83 Linux
?? --
I think the issue that you're seeing here is an issue with your SD card *reader* on your other PC.? What *capacity* is your MicroSD card?? Is it larger than 32GB?? What is the labeling on your SD card reader? ? Does it have writing on the card showing compatibility for:
?? - SD
?? - SDHC
?? - SDXC
?? - MMC
If I was to guess, you have a 64GB card and you're reader either doesn't have or has incomplete SDHC support.? I have been bitten by older SD card readers mis-reading bigger SD cards and if they seemed to read ok, writing to them would corrupt the SD card's file system.? It's really unacceptable that this is possible but I can personally tell you it *IS* possible and has happened to me a few times before.? If this is your scenario, I would recommend to *recycle* that old SD card reader and get something newer that has proper SD card support to avoid trashing future card events.
--David
KI6ZHD
On 08/13/2021 05:34 PM, David AJ6RE wrote: After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
?
|
Re: RealVNC loses connection
Hello Carlos,
You need to give us more details.? Where is your VNC client
computer?? Is it on the internet somewhere and your Raspberry Pi
is behind your home router with a port forward?? If so, it sounds
like your Internet router is timing out the NAT PORTFW connection
because it thinks the connection is idle.? Which VNC client are
you using?? Is it from RealVNC?? If so, do you see any interesting
detail on the client in the $HOME/.vnc/vncviewer.log file?? A an
experiment, you can go under Preferences --> Expert, what are
the settings for KeepAliveInterval and KeepAliveResponseTimeout??
Try HALVING the KeepAliveInterval
value and DOUBLE theKeepAliveResponseTimeout setting
and then re-connect to the Raspberry Pi.? Does that help?
--David
KI6ZHD
On 08/13/2021 09:56 PM, Carlos via
groups.io wrote:
toggle quoted message
Show quoted text
I can't seem to be able to maintain a VNC connection
for more that a few minutes.
Does not matter if the connection is cloud or IP, I am lucky if I
can maintain a connection for 10mts.
I have the router setup to port 5900.? I have checked the
When it disconnects and tries to reconnect I get the following
message.
???? "Attempting to reconnect to VNC Server..."
???? "Times out waiting for response to "keep alive" message"
I am beyond frustrated with this.
Using Linux Mint as the viewer.
I could really use some help with this.
Thanks
Carlos
KE5DFK
|
Hey David,
A micro SD card with a working copy of Raspberry Pi OS has two
partitions on the card:
?? - Partition 1 - FAT32 file system - holds /boot : A windows or
Mac computer can read / write these files
?? - Partition 2 - EXT4 file system - holds all other parts of the
OS, home directories, etc.: A Windows or Mac computer will NOT be
able to see this file system or read/write any of these files
You can see these partitions using the Linux command (here is an
example for a Samsung 16GB micro-SD card):
?? sudo fdisk -l /dev/mmcblk0
?? --
?? Disk /dev/mmcblk0: 14.9 GiB, 15931539456 bytes, 31116288
sectors
?? Units: sectors of 1 * 512 = 512 bytes
?? Sector size (logical/physical): 512 bytes / 512 bytes
?? I/O size (minimum/optimal): 512 bytes / 512 bytes
?? Disklabel type: dos
?? Disk identifier: 0x92f034a6
?? Device???????? Boot Start????? End? Sectors? Size Id
Type
?? /dev/mmcblk0p1?????? 8192??? 93813??? 85622 41.8M? c W95
FAT32 (LBA)
?? /dev/mmcblk0p2????? 94208 31116287 31022080 14.8G 83
Linux
?? --
I think the issue that you're seeing here is an issue with your SD
card *reader* on your other PC.? What *capacity* is your MicroSD
card?? Is it larger than 32GB?? What is the labeling on your SD card
reader? ? Does it have writing on the card showing compatibility
for:
?? - SD
?? - SDHC
?? - SDXC
?? - MMC
If I was to guess, you have a 64GB card and you're reader either
doesn't have or has incomplete SDHC support.? I have been bitten by
older SD card readers mis-reading bigger SD cards and if they seemed
to read ok, writing to them would corrupt the SD card's file
system.? It's really unacceptable that this is possible but I can
personally tell you it *IS* possible and has happened to me a few
times before.? If this is your scenario, I would recommend to
*recycle* that old SD card reader and get something newer that has
proper SD card support to avoid trashing future card events.
--David
KI6ZHD
On 08/13/2021 05:34 PM, David AJ6RE
wrote:
toggle quoted message
Show quoted text
After successfully using my Rpi 4 B+ for a few months
as part of my homebrew mobile manpack rig I decided to back up the
SD card prior to installing a GPS dongle. I did a sudo shutdown -h
now and powered down. When I stuck the SD card it into my PC it
was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card,
installed Hampi again, started reconfiguring Flrig etc., Then I
decided to double-check the new card. I did the graceful shutdown
before pulling the card out but evidently wiped that one as well
at some point in the process. All files were gone but for a couple
of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi
shut down all the way before pulling the card. I did not know to
wait for flashing lights after shutting down. However, I'm pretty
sure I powered it down all the way after several seconds.?After
spending hours flashing cards and looking forward to the prospect
of going back to square one yet again and then reconfiguring the
software again, and hoping it doesn't happen a third time, I am
thinking the pi may just be too fragile a system to rely upon for
emergency/mobile comms. It seems crazy that the SD card should be
so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was
using as a keyboard/screen interface to host the software and cut
out the Pi. It's a shame since I've invested countless hours in
getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
|
uh NO!? The files are not being erased and the SD card is NOT blank!
The "few" files that you can see are in the BOOT partition and it is formatted as FAT which windoz can see.
The main partition is formatted for Linus, in EXT4 and windoz can not see them.
Be careful because windoz can see this partition as another disk drive and wants to format it. DO NOT FORMAT IT!
There are several ways to backup your SD card:
-david
On Sat, Aug 14, 2021 at 9:08 AM Christopher Rose < kb8uih88@...> wrote: SD card
|
toggle quoted message
Show quoted text
On Aug 14, 2021 9:43 AM, Christopher Rose <kb8uih88@...> wrote: Turn off the pi power supply, unplug it if necessary to make sure the pi is off before pulling as card? On Aug 13, 2021 11:39 PM, "David Harris via groups.io" <v-zonkeh@...> wrote:
The RPi uses a different file system that a PC, which is why we use an ¡°Etcher¡± program to make a few FS¡ you¡¯d also need to use that Etcher to make a backup Image of the file system (with files) on your SD card¡ and then you could use
Etcher to Etch a new card using that pre-populated image (and carry that spare card as your just-in-case SD card.
?
?
?????? -Z-
?
?
From: [email protected] <[email protected]>
On Behalf Of David AJ6RE via groups.io
Sent: Friday, August 13, 2021 5:34 PM
To: [email protected]
Subject: [EXTERNAL] [RaspberryPi-4-HamRadio] SD Cards Erased Upon Removal? #hampi #hardware #pi #raspberrypi #usability
?
After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it
into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well
at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After
spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon
for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
|
Turn off the pi power supply, unplug it if necessary to make sure the pi is off before pulling as card?
On Aug 13, 2021 11:39 PM, "David Harris via groups.io" <v-zonkeh@...> wrote:
The RPi uses a different file system that a PC, which is why we use an ¡°Etcher¡± program to make a few FS¡ you¡¯d also need to use that Etcher to make a backup Image of the file system (with files) on your SD card¡ and then you could use
Etcher to Etch a new card using that pre-populated image (and carry that spare card as your just-in-case SD card.
?
?
?????? -Z-
?
?
From: [email protected] <[email protected]>
On Behalf Of David AJ6RE via groups.io
Sent: Friday, August 13, 2021 5:34 PM
To: [email protected]
Subject: [EXTERNAL] [RaspberryPi-4-HamRadio] SD Cards Erased Upon Removal? #hampi #hardware #pi #raspberrypi #usability
?
After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it
into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well
at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After
spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon
for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
|
Just out of curiosity, what OS are you using when attempting to read the SD card (when it showed "blank")?
-Sam KO4KBY
On Fri, Aug 13, 2021 at 8:34 PM David AJ6RE < dc1@...> wrote: After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
|
Actually...they are not any more "sensitive" to being removed than
other solid-state-devices...which is to say they are NOT as sensitive
as you suggest.
Wait 30 secs or so.....THEN remove it....(just to "be-sure")
es vy 73 om de "baab" w9ya
toggle quoted message
Show quoted text
On Fri, Aug 13, 2021 at 6:34 PM David AJ6RE <dc1@...> wrote:
After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it into my PC it was blank, save for the volume label.
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds. After spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE
|
Apologies for the potential double-post.? I waited an hour since my last attempt to send:
Just out of curiosity, what OS are you using when attempting to read the SD card (when it showed "blank")?
?
-Sam KO4KBY
|
Did you try putting the card back in the Raspberry Pi before formatting it?
Linux, which HamPi runs on usually uses a filesystem that windows does not know how to read... It would be the same if you put the drive from a Mac in the PC and tried to read it.
Linux can read almost any file system but Windows can only really read few(FAT, FAT32, ExtFAT, NTFS, etc.) You have to install a driver to get windows to read Linux and Mac partitions and file systems.
You could have probably backed up the SD card with a RAW backup program that backs up the data one for one without having to understand it.
Linux is VERY stable and not fragile. Last I checked about one half of all websites ran on it.
I have been running Lunux for years, and so was not surprised that I could not see my files from windows, but I can understand how it could confuse someone that had no experience with it before.
Linux has it's own backup software built in, and you could back everything up to a USB stick, USB HD, network, or the cloud.
|
I can't seem to be able to maintain a VNC connection for more that a few minutes.
Does not matter if the connection is cloud or IP, I am lucky if I can maintain a connection for 10mts.
I have the router setup to port 5900.? I have checked the
When it disconnects and tries to reconnect I get the following message.
???? "Attempting to reconnect to VNC Server..."
???? "Times out waiting for response to "keep alive" message"
I am beyond frustrated with this.
Using Linux Mint as the viewer.
I could really use some help with this.
Thanks
Carlos
KE5DFK
|
The RPi uses a different file system that a PC, which is why we use an ¡°Etcher¡± program to make a few FS¡ you¡¯d also need to use that Etcher to make a backup Image of the file system (with files) on your SD card¡ and then you could use
Etcher to Etch a new card using that pre-populated image (and carry that spare card as your just-in-case SD card.
?
?
?????? -Z-
?
?
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From: [email protected] < [email protected]>
On Behalf Of David AJ6RE via groups.io
Sent: Friday, August 13, 2021 5:34 PM
To: [email protected]
Subject: [EXTERNAL] [RaspberryPi-4-HamRadio] SD Cards Erased Upon Removal? #hampi #hardware #pi #raspberrypi #usability
?
After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it
into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well
at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After
spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon
for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
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After successfully using my Rpi 4 B+ for a few months as part of my homebrew mobile manpack rig I decided to back up the SD card prior to installing a GPS dongle. I did a sudo shutdown -h now and powered down. When I stuck the SD card it into my PC it was blank, save for the volume label.?
After failed attempts to recover the data, I flashed a new card, installed Hampi again, started reconfiguring Flrig etc., Then I decided to double-check the new card. I did the graceful shutdown before pulling the card out but evidently wiped that one as well at some point in the process. All files were gone but for a couple of text files and the volume label.
Subsequent online research indicates maybe I didn't let the pi shut down all the way before pulling the card. I did not know to wait for flashing lights after shutting down. However, I'm pretty sure I powered it down all the way after several seconds.?After spending hours flashing cards and looking forward to the prospect of going back to square one yet again and then reconfiguring the software again, and hoping it doesn't happen a third time, I am thinking the pi may just be too fragile a system to rely upon for emergency/mobile comms. It seems crazy that the SD card should be so vulnerable to erasure simply by being extracted from the Pi.?
At this point I am planning on just using the Toughbook that I was using as a keyboard/screen interface to host the software and cut out the Pi. It's a shame since I've invested countless hours in getting Hampi up and running.
Has anyone else had this experience?
David AJ6RE??
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NEW Hackable HF SDR for the Raspberry Pi by VU2ESE
Hi Everyone,
I just came across this Hackaday.com article about a user-modifiable HF SDR that should cost less than $100 USD for the Raspberry Pi here:?
It comes from the same developer as the ubitx radio, VU2ESE, so points in its favor!
For more info, you can visit these links:
PDF here:?
Message forum thread here:? /g/BITX20/topic/sbitx/83191173?p=,,,20,0,0,0::recentpostdate%2Fsticky,,,20,2,20,83191173
GitHub repo here:?
-- - Dave ??
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Re: FLDIGI 4.1.19 RPi4 GPIO PTT
Thanks Steve, will keep an eye on that other group. So many groups, so little time?
73¡¯s Dave WA5TET?
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Re: FLDIGI 4.1.19 RPi4 GPIO PTT
Hi Dave,
I reported this problem to Dave Freese, W1HKJ, right after 4.1.19 was released. He promptly fixed it and the fix is in the development release, currently at . Mosts of the Fldigi related posts are in the linuxham groups.io group.
73,
Steve
AG7GN
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