hello,

i have windows xp running on sil 3112 sata raid controller. i would like to install ubuntu as second OS (multiboot). Is it possible?

Yep, really easy. Just make sure you make a backup of your important stuff first. Then when you get into the Ubuntu installer, don't erase your windows partition.

it is software raid. inside installer ubuntu sees 2 drives.

And ubuntu would be right! Just do what ctkroeker said to do and you will be fine.

mhh... i want to install ubuntu on the same raid drive. how can i install it if it sees 2 drives???

can i create new partition for ubuntu on my raid drive?

will ubuntu see my raid drive or just 2 separate drives?

Do you HAVE two seperate drives, or two partitions? You seem confused as to why ubuntu is seeing two drives. Are you sure that it is not seeing two partitions?

If there exist a free partition on your raid then simply install to that space. If you actually have two drives and insist on having both OS's on one, then things will get more complicated because you will need to resize your Win XP space to make room for ubuntu.

OR you could just install to your second drive and make things very simple! (thats if you DO have a second drive)

ubuntu sees 2 different hdd-s. not partitons. xp sees 1 drive which actually is raid 0. on that raid 0 i have 3 partitons for xp. how can i make ubuntu to recognise this raid 0 volume so i could make a new partitions for ubuntu. i have some unpartitioned space for that!

i'll try to takse some screenshots!

i went to the partitioner, which showd me, that i have 140+ gigs of unpartitioned space. actually it is about 90 gigs. so something isn't right

windowsi sees: http://keevitaja.com/stuff/win.jpg
which is raid 0 volume on sil 3112 sata raid controller(software raid)

but ubuntu sees 2 separte drives as they are. just samsung sata 160 GB x 2. no partitons!

You can try to get ubuntu to recognize your unallocated space by formatting it as Fat32. This will also help you to see that space while your involved in the partitioning section of the installation. It's very possible that the unallocated space could be what is tricking ubuntu into seeing two drives.

There is not much linux support yet for S-ATA Raid. In the meantime, have a look here: http://linuxmafia.com/faq/Hardware/sata.html And good luck!

now i have a second problem. with grub.

as the grub sees 2 different hdd-s, it can't boot windows. how can i configure grub to boot windows?

ubuntu is on different hdd.

Grub needs to be in the MBR, but as I said, You are going to have problems no matter what you do!

I have the same raid controller and are currently running dual boot with XP and using XPs boot manager. See my post here: http://www.linuxquestions.org/questi...d.php?t=470437

It is took me some time to make it work. I think you should be able to follow the same process using the liveCD (I used one from a magazine).

Grub will install by default to MBR, but doesn't need to be there. You need to save the ubuntu.bin file as I describe in that other post, then put back the windows MBR with the XP install CD. I think you should be able to boot windows from Grub as well though if you prefer that.

Good luck.

Mons