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SubjectLinux-2.6.8 Hates DOS partitions

Hello DOS haters!

I used to boot my system as:

aic7xxx [SCSI 0]
/dev/sda LILO boot record
/dev/sda1 DOS drive C:
/dev/sda5 DOS drive D:
[SCSI 1]
/dev/sdb1 ext2 root "/"
/dev/sdb2 swap-file
[SCSI 2]
/dev/sdc1 ext3 fs
/dev/sdc2 swap-file
/dev/sdc3 ext3 fs


/dev/sdb1 / ext2 rw,noatime 0 1
/dev/sdc1 /alt ext2 rw,noatime 0 2
/dev/sdb2 none swap defaults 0 2
/dev/sdc2 none swap defaults 0 2
/dev/sdc3 /home/users ext2 rw,noatime 0 2
none /proc proc defaults 0 2
/dev/sda1 /dos/drive_C msdos defaults 0 2
/dev/sda5 /dos/drive_D msdos defaults 0 2


Then I added a completely different hard-disk to
boot the following:

LABEL=/ (/dev/hda2) / ext3 defaults 1 1
none /dev/pts devpts gid=5,mode=666 0 0
none /dev/shm tmpfs defaults 0 0
none /proc proc defaults 0 0
none /sys sysfs defaults 0 0
/dev/sdb1 /home/project ext2 defaults 0 0
/dev/sda1 /dos/drive_C msdos defaults 0 0
/dev/sda5 /dos/drive_D msdos defaults 0 0
/dev/hda3 swap swap defaults 0 0
/dev/sdb2 swap swap defaults 0 0
/dev/sdc2 swap swap defaults 0 0

Only the DOS partitions and the swap are used in this new configuration.
This is a new "Fedora Linux 2" installation on a completely
different IDE hard disk, in which I have to enable boot disks in
the BIOS to boot the new system.

Immediately after installing the new system I reverted (in the BIOS)
to the original to make sure that I was still able to boot the old
system and the DOS partition. Everything was fine.

Then I installed linux-2.6.8 after building a new kernel with
the old ".config" file used as `make oldconfig`. Everything was
fine after that, also.

I have now run for about a week and I can't boot the DOS partition
anymore! I can boot from a DOS diskette and DOS sees 'C:', but
not 'D:'. DOS 'thinks' that C: is bootable but I get "Missing
operating system" when it attempts to boot. I have executed
`fdisk /mbr`, and `sys C:`, as well as Norton's `ndd`. Everything
seems to 'think' that the system should boot. However, it
doesn't.

I can boot Linux from an emergency floppy and re-run LILO to
make my first SCSI bootable. It will boot Linux, but not
DOS. I can also boot DOS from a floppy and access the
"C:" partition, but not the "D:" one.

It looks like the new operating system, linux-2.6.8, has
done something bad when it used my SCSI disks for swap.

I can copy everything from C: and D: from within Linux
and then re-do the DOS partitions, BUT.... bad stuff
will happen again unless the cause is found. I never
had any such problem with linux-2.4.26 and below. I
could even execute dosemu and run DOS compilers, editors,
and assemblers. Not anymore. DOSEMU-1.3.1 won't even
compile with the new 'C' compiler, but that's another
problem.


Cheers,
Dick Johnson
Penguin : Linux version 2.6.8 on an i686 machine (5537.79 BogoMips).
Note 96.31% of all statistics are fiction.

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