How-to Install 9.10 on fakeraid

[gilson585]

Thats great, no rush though. I may just go ahead and try it myself in Raid 1 to confirm your results. Afterwards I'll work on adding these instructions to the Ubuntu wiki. Thanks again for your input.

[cedric.driard]

No problem, I'm very happy to had contibuted and if you want me to do some test it's possible this week end (I'm not a home this week)
The thing I saw which is particular is I don't have a device.map, do you think it's normal ?

So, do I have pass my test to grow up the step newbee in linux

Again many thanks for your help, I'm very happy to become a linux user

[phillw]

Does anyone know if the GRUB2 fix has been implemented into the daily builds? or if it will be in Alpha 2 of 10.04?

Grub v1.98 has been released for the alpha1 of 10.04 - it fixes various RAID issues.

burg is another possibilty - like grub, but spelt differently - lol
for a quick chat on burg & raid --> http://ubuntuforums.org/showthread.php?t=1378951

and burg in general http://ubuntuforums.org/showthread.php?t=1195275 Section 8
or http://ubuntuforums.org/showthread.php?t=1371288

That's as up to date information as I have it. Please feel free to pass it on !

Regards,

Phill.

[datman]

Thank you to cedric.driard!!!!

I have an Alienware M17x laptop with nvidia raid 0, dual booting Ubuntu and Win 7. After Win 7 died, I had to use the repair partition to recover it and naturally it wiped out my grub bootloader.

After a whole frustrating day trying to recover grub, your instructions worked!

[cedric.driard]

Datman, I'm happy that "my" instuctions work for you, but for Windows I thinks use the repair partition is very long, if windows doesn't boot, try to make a fixmbr (I do it many times during trying install Ubuntu in fakeraid and it worked all the time and take 5 minutes)

boot on windows CD
choice installation
F6 to install raid driver
choice R for repair
at the terminal
choice your HDD where is windows
write : fixmbr
write a new mbr, say yes

[gilson585]

bump
Need more people with Raid 1 mirrored setups reporting this method works and if not we need to figure out how to make it work so this can be added to the Ubuntu fakeraid wiki.

[glee]

I am attempting a fresh 9.10 install on new Dell precision T1500 (Intel P55 fakeraid), RAID 1.

Following Cedric.Driad's instructions (post #40, this thread), and adjusting step 12 to x86_64, everything seems as expected up to 13.2:

Unknown partition table signature
(hd1,6)

My / filesystem is indeed on the 7th partition, but it surprised me that this is reported as the second disk. I had been assuming that the '0' in 'hd0' was being used as a shorthand to refer to the raid array, rather than the disk (in this case /dev/sda). So does the reference to 'hd1' mean that during installation only partition 7 on the second disk was used?

[gilson585]

I'm sorry but the best guess I can give is that you may have not provided the correct device for (hd0) at the Grub cmd line. I also did not realize cedric had modified his post to include steps from the Ubuntu wiki. Now I would normally go ahead and verify then add his steps to my guide and giving credit where due but I need to be up early. On top of this my server happens to be the only sys here with raid and it cannot go down during the day so I'll need to do this the following night. It provides critical functions here and no failover is in place for its absence. I know he had fought with his setup for a while. Knowing that he had a mashup of how-to's in front of him and you may be missing just one lil step that he had taken. I'm sure at one point he performed my instructions steps 7, 8, and 9 which is not part of post 40 nor can you forget my last part, blocking updates to Grub. Neurotic also commented that he was stuck until he ran update-grub and then finished installing grub. At what point I am unsure. I also tried helping cedric before he got his to work. I asked him to try some pointers from a link although I am unsure it actually helped. The information is generic and does not apply to Ubuntu specifically. It's listed in post 37. Best of luck lemme know what happens.

[glee]

Just so we're clear: Prior to the issue mentioned, I executed the following with no apparent problem:

# grub --no-curses
1. grub> device (hd0) /dev/mapper/<my-raid-device-root-partition>

I did follow through with the remainder of the instructions, and grub-update(s) produced no errors, but obviously there are issues to be resolved elsewhere.

[Objekt]

I've read somewhere that the ICH10R chipset and its built-in raid is somewhat flaky in linux. Not sure why it had worked in 9.04 but not 9.10 in your case. I'm gonna take a wild guess here but I would like to believe dmraid can't make sense out of the metadata defining your array. The only way to prove that would be start the array from scratch. I'm sure you dont want to backup all your data and try that just to get linux, I don't blame you. Maybe wait a lil while longer for 10.04 and see if that works for you. It may also be that the command used for device is not english on your sys try typing help at the GRUB CMD line.

I can tell you that the ICH10R chipset is not only "flaky" in Linux, it's flaky and annoying under Windows XP. I gave up on running a RAID 1 setup with my ICH10R not only because I couldn't figure out how to install Ubuntu 9.10 on it, but also because it was lousy under Windows XP as well. The next time I want to run a RAID, I'll shell out the extra $200-$300 for a true, hardware-implemented RAID card. The ICH10R's "RAID" features are perhaps an educational toy at best.