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тАО03-31-2003 08:51 AM
тАО03-31-2003 08:51 AM
Boot from SCSI
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тАО03-31-2003 10:28 AM
тАО03-31-2003 10:28 AM
Re: Boot from SCSI
Did you also check SCSI BIOS settings ?
G.
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тАО03-31-2003 01:12 PM
тАО03-31-2003 01:12 PM
Re: Boot from SCSI
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тАО03-31-2003 03:44 PM
тАО03-31-2003 03:44 PM
Re: Boot from SCSI
By default, most BIOS' will boot roughly in this interface order:
Floppy
IDE
SCSI
Now, most modern BIOS' can be told what the boot order will be (CD-ROM, Floppy, HDD, Network), but not all of them know that a SCSI interface is bootable.
So simply put, unless you can tell your BIOS to look at a SCSI device before an IDE device, you have to do things a little differently.
How so?
Simple.
Instead of (just) using the MBR on the SCSI device, you need to write the boot loader (either Grub or Lilo) to the MBR of the IDE device, as this will probably be the first thing that gets seen.
Once it is written there, you can happily configure it to boot off different physical devices, just by pointing the boot objects to different areas (using 'root=' etc. etc.).
Hope this helps a bit. If you want more details on what needs to say what, tell us what boot loader you are using, and what it's current configuration file says (i.e. /etc/grub.conf or /etc/lilo.conf).
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тАО03-31-2003 08:07 PM
тАО03-31-2003 08:07 PM
Re: Boot from SCSI
If you have the SCSI drive powered off (just the IDE drive enabled), what happens? I ask because I once tried to install RH 5.1 onto a PC with such a config and it behaved similarly. What appeared to have happened was that RH didn't recognize that the IDE drive was disabled in the PC BIOS and it installed LILO onto the IDE anyway. It was like Deja Vu, because I remember the same thing happening with IBM OS/2 a few years ago...
If it does appear that LILO actually went onto the IDE drive, you probably just need to boot Linux with the IDE drive "disabled", then write LILO onto the correct drive.
Regards,
Dave
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тАО03-31-2003 09:37 PM
тАО03-31-2003 09:37 PM
Re: Boot from SCSI
G.