From what I've read up on, it seems like most non-server bioses do some
sort of fake raid, where the raid is controlled from the bios but is
actually a software raid (at least partially). Windows which came
installed on the machine sees it (or reports it) as one disk (although
it does call it oemraid). Linux seems a bit more confused. When I
started it with dmraid=true, it sees it both as a strip drive (raid 0)
and it seems that somewhat also as multiple disks. I have both /dev/sda
and /dev/sdb and /dev/mapper/{really long name}.
I can partition the drives and install the system to it, but then grub
(grub2 actually) chokes. I can't mount the system properly under
/target, calling grub-probe directly recognizes the partition as ext2
(although it is ext4) but calling grub-install says that grub-probe chokes.
The system has 2 500gb disks in raid0 (strip) setup. The partition setup:
#1 (primary) is windows 7 boot partition (1.17GB)
#2 (primary) Windows 7 (600GB)
free space for linux (will probably need to be logical)
#3 (primary) lenovo recovery (15.6 GB)
On 18-Aug-11 17:39, Oleg Goldshmidt wrote:
On Thu, Aug 18, 2011 at 3:23 PM, Micha Feigin <mi...@post.tau.ac.il
<mailto:mi...@post.tau.ac.il>> wrote:
I just got a new w520 with two 500GB hard drives configured in
raid0 (seems to be a bios based software raid0).
I am a bit confused. If the RAID is "BIOS-based" then it sounds to me
like it is HW RAID. In this case it should be transparent to Linux,
grub, even DOS, shouldn't it?
Is it some sort of "fake RAID" that is not a true HW RAID? In that
case you may be out of luck or it may still work after some
incantations and contortions.
Windows is already installed and running on it (and I need it to
stay there unfortunately) and I'm trying to install linux along
side it (debian unstable).
Are you trying to install Linux on the RAID itself or on another disk
and use the RAID under it? Or on the RAID itself? It sounds like the
latter, but I am not sure. Some details on your partition layout would
help.
I got the installed running and it installed fine
I am not familiar with debian installation, but what did it show as
the partition table during install? Did you modify it in any way?
What does the partition table look like now?
as it seems (although it looks like it messed up the partition
table a bit as now I also have sda1 and sda2 that weren't there to
begin with I think), but I can't get grub to install
What exactly did you do and what didn't work?
and rescue mode also won't boot into linux no matter what drive I
choose as root. I did manage to mount the partition from
/dev/matter/...05 and everything is installed on it, but again, no
grub.
Any ideas on how to get linux up and running (I need to boot into
it somehow).
My first guess is that you need to edit grub's device map as
appropriate for your setup.
However, this is a wild guess. It would help if you posted fdisk -l,
mount table, details of your grub configuration, things that you have
tried and the corresponding outputs...
--
Oleg Goldshmidt | p...@goldshmidt.org <mailto:o...@goldshmidt.org>
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