by I have installed SCO OSR5 on a HyperData HyperBook (which resolves to a:
* 133 MHz Pentium
* 32Mb RAM
* dual EIDE controllers, disk on one, ATAPI CD-ROM on secondary
* Touch-pad mouse (works like Lowres keyboard mouse)
* Sound-blaster compatible sound
* PC-Card slot w/ 3com 589 PCMCIA networking card)
After some work and much frustration, I found out that I could get
the system to boot off floppy and see the root hard disk and ATAPI
CDROM with the following:
biosgeom=(4200,16,63) defbootstr disable=dptr prompt="watch"
(I put the prompt in so that during the long floppy load, I wouldn't
miss the kernel configuration line).
The OS installed fine. During badtrk, some sectors were marked bad in
the area of cyl 100. No big deal.
When I go to re-boot after the install, the system:
1) hits the disk 5 times (you can hear it)
2) prints the message "IO ERROR"
The manual page for boot(HW) says that the "IO ERROR" message comes
from the master boot program (which resides in the master boot block,
i.e. block 0) tries to read in the boot program on the active (UNIX)
partition. (parens my own). So, I tried:
1) booting to the boot prompt off floppy and typing:
biosgeom=(4200,16,63) hd(40)unix
which results in the message:
Error on Fixed Disk (minor 15), blkno=2, cmd=0002, status=0004
Sectpr = 67, Cylinder/head = 0/1
Cannot open device: hd(40)
2) booting w/ the kernel off the floppy and rooting off the hard disk.
I do this with:
biosgeom=(4200,16,63) fd(64)unix.Z root=hd(42) swap=hd(41)
This works fine. But I don't _want_ to have to boot off floppy every
time and I shouldn't have to either.
3) running dparam and re-writing the disk geometry info out to disk
4) copying /etc/masterboot to /dev/hd00
5) re-making the master boot code with:
cp /etc/hdboot0 /dev/hd0a
dd if=/etc/hdboot1 of=/dev/hd0a bs=1k seek=1
One thing I've noticed along the way... the biosgeom flag appears to
have a bug in that the disk geometry reported by the "%disk" line at
kernel boot is one more than that provided in the biosgeom string. So,
I have tried this all a second time with biosgeom set to (4199,16,63)
and that didn't work either.
OK, so what am I doing wrong or not doing?
Thanks,
Matthew
--
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