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SubjectRe: MO problems...
On Fri, 5 Jun 1998, Harvey Fishman wrote:

> Is it me, is it Linux, or is it Fujitsu? Does Linux support the Fujitsu
> M2513a MO drive with 640 MB media? It seems fine with 230 MB media, but
> the larger disks use 2048 byte sectors. The drive works fine with either
> under NT, but under Linux (2.1.102 or so) it told me that the drive was
> only about 150 some odd MB in size. I know there used to be 540 MB media
> (these have been discontinued by Fujitsu, though Maxell and some others may
> still make them) with 512 byte sectors, but I use the 640 MB disks. Has
> anyone made this work? If so, how? Thanks.

FWIW, I have a M2513 external drive, off a cheap NCR controller. I was
never able to mount a disk fdisk'ed with Windows' tools. If you dd|od one
of your existing disks, you'll notice that the partitions actually begin
at a different place from where Linux expects them. Certainly one (or
more) of the fdisks and block drivers hardcodes sizeof(sector)==512 and
then magically falls back on its feet when it did format the disk. Sounds
like fixing this would require some kludges in the partition-table reading
code (berk !)

Out of time and lack of a free cartdridge, I haven't yet tried to fdisk a
MO with linux and then make a FAT system on it, to see whether Windows was
able to read them.
However, I was successfully able to fdisk and mke2fs a disk, using Linux.
And it now works great : I compile my kernel, glibc and compiler trees
from that disk.
(of course, none of this can work on 2.0, which didn't understand
2048-byte sectors, from the little I've understood of that code.)

Good luck

-- Cyrille



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