Re: Bootsector not writable? [SOLVED]
Hi Cameron, hello list,
Am Montag, den 13.06.2005, 18:52 +0800 schrieb Cameron Patrick:
> > The system works without any problem if I boot it from my
> > grub-floppy.
> You could try installing grub from that boot floppy. It'd be
> something like:
> grub> root (hd0,0)
> grub> setup (hd0)
> Replacing (hd0,0) with the partition that contains grub (e.g. /boot or
> if you don't have one, /).
OK, I tested this, and again, it seemes to work (setup reports no
errors) but in fact the system was still unbootable.
I decided to kill the MBR completely:
dd if=/dev/zero of=/dev/sda bs=446 count=1
Now, it is really gone ;)
I wrote an image with the MBR and the partition-table to my harddisk:
dd if=/dev/sda of=MBR_clean.img bs=512 count=1
I have tried to write the MBR again via grub-install and wrote the new
MBR to my harddisk:
dd if=/dev/sda of=MBR_new.img
OK, now I compared both images:
diff MBR_clean.img MVR_new.img
diff told me, that both files differ.
Fine, my assumption, that I have a problem to write the MBR was wrong ;(
I started again with digging into the BIOS options:
I have found an option "Prevent booting from IDE HDD" enabled.
As Linux uses an SCSI-devicefile (/dev/sda*) I thought that this option
has no effect. (This was the second wron assumption ;()
After diabling this option the system starts without a bootfloppy.
Sorry for that ;)
Thanks for all the help,