On 6/3/21 10:10 PM, Dave McGuire wrote:
No.
Strictly speaking, you're correct, "dd" itself doesn't care about disk
formats. However, the underlying device driver does, and the floppy
disk controller chip underneath that does.
The Linux fdd driver assumes a certain sector size, number of sectors
per track, number of tracks per cylinder, and number of cylinders per
disk. In the era in which the 4145A was designed, there were no
industry standards for those parameters for 5.25" disks.
[replying to my own email, man I must be tired]
I neglected to insert a paragraph regarding on-disk physical formats.
As I mentioned earlier, FM, MFM, and GCR encoding for bit
representation. Then there's hard sectoring vs. soft.
In other words: "nope".
-Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
Dave McGuire