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 Posted: Fri Jul 19, 2002 6:24 am Post subject: Grub and Mylex DAC960 |
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I'm running a hardware Raid0 configuration with 4 SCSI drives. The RAID card is a Mylex DAC960. The OS sees the drives as /dev/rd/disc0/disc. When I fdisk, I set them up as:
/dev/rd/disc0/part1 100MB Boot partition (ext3)
/dev/rd/disc0/part2 512MB Swap partition
/dev/rd/disc0/part3 The balance of the array (xfs)
When I get to the Install Instructions step #40, I have problems.
I'm assuming that the array is seen as one drive with the boot on partition 1 so I enter root(hd0,0)
Once I enter that command, I get the following:
Error 21: Selected disc does not exist.
When I do a root command, the only thing that is returned is this:
(fd0) : Filesystem type unknown, partition type 0x0.
I've searched the boards as well as Google/Google Groups to no avail.
I need some help please. Thanks ) |
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mksoft
l33t
Joined: 28 May 2002
Posts: 844
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| Posted: Fri Jul 19, 2002 7:44 am Post subject: |
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Try installing it to actual disk device (the 1st one) rather than the array (the scsi disk instead of the raid).
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There's someone in my head but it's not me - Pink Floyd |
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Darkstar
n00b
Joined: 19 Jul 2002
Posts: 30
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| Posted: Fri Jul 19, 2002 2:31 pm Post subject: |
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Can you give me an example of what you want me to try? I don't follow you. From what I understand about RAID, the OS sees the entire array as one drive.
BTW, the above post is mine. I posted w/o logging in. |
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mksoft
l33t
Joined: 28 May 2002
Posts: 844
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| Posted: Sat Jul 20, 2002 3:02 pm Post subject: |
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I've used DAC960 controllers on systems withou devfs and grub (using lilo) so YMMV.
Looking at grub's ebuild I can see it had been patched to recognize raid devices.
See if you have a device file named /dev/rd/c0d0. If so, you can install to it, just map (hd0) to that device 1st using the device command:
| Code: | | grub> device (hd0) /dev/rd/c0d0 |
This is from theory (haven't tried it myself). Maybe this needs to be added to menu.lst as well, or deviec.map needs to be created (AFAIK device command is only available in a grub-shell). Reading the grub manual might shed more light on the subject.
Alternatively, try using grub-install command
| Code: | | grub-install /dev/rd/c0d0 |
from a system shell not from grub shell 
I know, that's a lot to chew on 
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Installing Gentoo
