Alan Cox wrote:
The remap63 hack is ancient. Since the kernel acquired device mapper its
also unneccessary as you can use device mapper to set up a 63 sector
offset volume.
I'm amazed anyone is still using it but the right way to handle it on a
vaguely modern system isn't more kernel hacks but to teach dmraid to
handle it. If you've got an example of what the layout looks like
(especially if there is a way to autodetect it) then talk to Heinz (cc'd)
about getting it added to dmraid.
I got no useful reply to my request for the user to send the first
megabyte of the hard disk. However, using a cracked version of Hitachi
OEM variant of OnTrack Disk Manager, I produced a 64GB qemu disk image
with this disk manager, Windows 98 and a Linux partition (just in case).
It works fine with hda=remap63 and thus serves the purpose of being an
example of the layout.
The first 64 KB of this hard disk can be found at
http://ums.usu.ru/~patrakov/first-64-kb.dsk (please tell me when I can
remove this file).
The full disk image (obviously, without Windows 98 - but you can install
it yourself) can be reconstructed as:
dd if=/dev/null of=first-64-kb.dsk bs=1M seek=65536
Note that you can't just reinterpret the OnTrackDM6 partition as a disk
image because it doesn't start at sector 63. To use this image in qemu:
qemu -hda first-64-kb.dsk -hdachs 1024,16,63,none -cdrom
your-favourite-livecd.iso
In the original image, I could do a "mount -t vfat -o loop,offset=64512
/dev/hda /mnt" and see the Windows partition.
--
Alexander E. Patrakov
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