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hello all, I'm facing problem to bootup OS installed on different drives on my rx2660 HP integrity server. System F/w :3.01 {4739] BMC version:5.21 MP version :F.02.17 I have 3 hard drives on my server. I created Raid 0 on all the drives as below:- LD #1 Raid 0 146GB (dev/cciss/c0d0) LD #2 Raid 0 73GB (dev/cciss/c0d1) LD #3 Raid 0 73GB (dev/cciss/c0d2) I installed Rhat5.1 on LD1(c0d0).After finish installation, i could see the RHat5.1 boot entry on the EFI boot manager and I could boot up. Then I installed RH4(c0d1) and Suse10(c0d2) on my other 2 drives. Installation was completed successsfully but when it reboot after installation complete, I can't boot up to the OS installed on other drives although the boot entry of Rhat4 and Suse 10 appears at EFI boot manager.When i select the entry(Rhat 4 or Suse 10) it says file not found. When I boot up to Rhat5.1, installed on the 1st drive and mount c0d1 to /mnt/floppy, i could see the files that has been installed on other drives. Then I tried installing RH4 on the same drive on different partition on LD1 (C0d0) and i can successfully multiboot.I could also install Suse10 and boot if I install on the 1st drive different partition. I'm not sure why I cannot setup multiboot when I install the OS on separate drives. Is there anything I need to do for the EFI boot manager to detect my other drives? Even at EFI shell, when I switched to fs3: I only can find the files installed on the 1st drive. I need to setup multiboot from OS installed from different drives but I only can do multiboot from 1 drive now.. Any help on this is much appreciated. How the EFI boot manager load the OS?