Re: More floppy oddities

[mlelstv%serpens.de@localhost (Michael van Elst)]

michael.cheponis%gmail.com@localhost (Michael Cheponis) writes:

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>Content-Type: text/plain; charset="UTF-8"

># scsictl sd1 format
>/dev/rsd1: Check Condition on CDB: 1a 00 03 00 24 00
>    SENSE KEY: No Additional Sense
>     ASC/ASCQ: No Additional Sense Information

>I don't know what that means.


'1a' is a "mode sense" command that is used to query some information
(like geometry) and that failed.


>The console prints:
>[ 2207.9560928] sd1(umass1:0:0): medium error, data = 00 00 00 00 30 01 00
>00 00 00
>[ 2207.9610935] sd1c: error reading fsbn 64 (sd1 bn 64; cn 1 tn 1 sn 10)


Reading failed and the drive returned 'medium error', i.e. it couldn't
read anything. That could mean the medium is defective, but it could
also mean that the drive assumes some different formatting. It's possible
that the drive requires some configuration that our sd driver doesn't
provide.


>When trying 'fdformat'

>fdformat -f /dev/rsd1a -t 1440
>fdformat: Device `/dev/rsd1a' does not support floppy formatting:
>Inappropriate ioctl for device

fdformat is only for the fd driver.


>These diskettes have been pre-formatted under Windows 11, they work fine on
>that OS.  I have two different USB floppy drives, one is Teac, one is Sony;
>both work fine in Windows.

That would rule out a "real" medium error.