Re: Extracting files off “unknown” 8 inch disks. Any thoughts…
terry at webweavers.co.nz
Mon Apr 17 18:36:01 CDT 2017
>Here's a writeup for those interested:
One thing in this project puzzled me. Initially when I was testing the
drive I tried to format it for 77-tracks. I used the command FORMAT B: /u
/T:77 /N:15 . It wouldn't let me. MS-DOS said "
parameters not supported by the drive"
After trying a few other things (unsuccessfully) I just tried a straight
FORMAT B: /u
It then formatted it without complaint?
Listening to the head moving, I counted 77 tracks. The last three tracks
the clicking stopped. I'm assuming the head just wrote over that final
track 3 times. MS-DOS told me I'd formatted for 1.2MB.
I'm puzzled why I couldn't format the disk using the /t:77 and /n:15
switches. Did MS-DOS just go by what was in the CMOS. If that's the case,
why have those switches at all? Are they just legacy switches for
Anyone know the answer to this?
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