Re: Question about Hard Disk ordering in BIOS and seen by debian installer
Remi Butaud wrote:
>
> Hi,
>
> Here's the trick question:
>
> How does the installer (or a linux core, like the one that's on the
> debian netinstall CDs) know the hard disk ordering? It seems that it
> doesn't read it from the BIOS, or that it doesn't do it properly.
>
> Let me explain:
> I have the following hard disk order : SATA0 - IDE0 - SATA1 se in the bios.
> Let us assign names to the devices, which will be
> /dev/sda : SATA0, /dev/hda: IDE0, /dev/sdb: SATA1
>
> Some OS is on /dev/sda1 and is being used at boot. When I install
> debian, it does see that there is another os, but the boot loader
> installs itself on the MBR of /dev/hda. Which, at reboot, is
> completely ignored, as the BIOS uses the order above.
>
> So why does the mini-OS or the base system or the installer decide to
> put the bootloader on the wrong disk in the first place? Or rather, is
> there a way to let it know the BIOS settings?
>
> Cheers,
>
> Remi.
>
>> PS: The 'incriminated' motherboard is ASUS K8N-E Deluxe (AMD 64 /
nForce3 based)
>The key for you may be to edit the /boot/grub/device.map file, which is
>how you can tell GRUB what the BIOS order of drives is. The original
>content of device.map constitutes a "guess", which is often right, but
>definitely not always.
>
>Here's the section of the GRUB manual, that gives some more information
>on it:
>
>http://www.gnu.org/software/grub/manual/grub.html#Device%20map
>
>Tom
Thank you Tom, I'll try that with next install, which should happen soon :)
However, is there a way for the installer to get the information from
the BIOS rather than simply guessing?
Cheers,
Remi.
Reply to: