5.25" Floppy disk drive not recognized
mueller6722 at twc.com
Sat Aug 15 08:23:28 UTC 2020
> Iâm trying to access a 5.25â floppy disk drive if anyone here knowing what a âfloppyâ disk drive is. :)
> neither less or cat works. I cannot totally exclude that the media donât fit.
> The ones in questions here are CP/M 68k format. They are DD-DT.
> But I wonât get at the problem over the weekend to eventually test other media from which I know they are definitely MSDOS.
> OTOH, dd normally used to work on this kind of devices, didnât it?
> Iâm getting doubts.
> The once was /dev/MAKEDEV for this.
There still is, in NetBSD and OpenBSD.
My first personal computer was with MS-DOS 4.01, which was a big improvement over MS-DOS 3.31.
So I never had CP/M in front of me.
Floppy-disk version of senile dementia did me in, computerwise.
First I would no longer be able to write to the diskette, much later I would not even be able to read the diskette. Formatting would not help, besides destroying all the diskette's data.
I did, in the distant past, use dd successfully to write to 3.5" floppy disks.
I remember the days when FreeBSD installation sets came in chunks intended for dd to floppy disks (base.aa, base.ab, base.ac, ...), and I would not be able to get enough good floppies to do this successfully.
NetBSD didn't do that, and I was quite glad when FreeBSD quit that very inconvenient practice.
Any hope of recovering some of your floppy data with ddrescue? I once used that on a WD Green 3 TB hard drive, rescued most but not all of the data.
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