I lacked the speed of the disk on the computer and it was decided to make raid 0+1 of 4 disks. The motherboard supports software RAID, the drives were purchased, configured, everything worked fine.
Then I decided to try to boot from disk ubuntu 9.04 and see if this linux raid as a single disk. The miracle did not happen, linux disk did not see. Well, okay, I think. Reboot back into Windows and while booting I get a message that all 4 discs now "Offline member".
Google search gave this a cunning decision: you need to load ubuntu live cd, install dmraid package and restart the computer. If you do everything right, all of the drives at boot marked "online member", the system starts and runs.
All works only until the computer is turned off. As soon as the computer shuts down, the entire procedure of startup disk of Ubuntu need to be repeated. Reboot it can and can not be shut down.
That's the question: what the heck is that? How to fix it?
there is little information.
0. The host operating system under which the RAID was cool and everything worked?
1. This software(originally configured operating system) or hardware RAID?
2. If the hardware, the battery on the motherboard/controller looked?
The first thing that comes to mind is to try to go into the settings of the RAID and force the drives online.
Bertha.Wiso answered on October 8th 19 at 02:37
First, Yes, join queries — what motherboard?
After installing dmraid in the live CD of Ubuntu begins to see the drives? (To start.) If Yes, then you can at least save the data and the system (clear the way).
What is seen in the BIOS before rebooting with Ubuntu (well, as it is combined with offline member)? What is clear after reboot?
btw, 9.04 is a very ancient system, it is realistic that the old mdadm which is not able, and in the new, for example, may be able to. Look at kernel version: 2.6.32 isn't able, able 3.2. (Dmraid itself is much more ancient than bios support fake raidов in mdraid).