29.07.2016 17:29, Xen пишет: > Just want to report that I have a motherboard (A785GMH/128M) that will > fail to boot the moment a RAID disk is present. >
Is it EFI or legacy BIOS? > Grub will just not see any devices. It will fail with a message that > (hd0) could not be found. > > "ls" then yields nothing, an empty line as output. > > This is also true when booting from USB stick. It will fail to boot this > stick, even though all required partitions etc. are on the stick itself. > > An alternative motherboard with the same chipset that I have lying > around will boot without issue although I have not configured an array > on it yet; but this motherboard simply allows "Single Disks" to pass > through and neither the usb-stick-grub nor the hard-disk-grub have a > problem with it. So I have yet to test what happens when I take out the > disk that is currently running this system and put it in that other > system so that the RAID controller will see a "configured "SPARE DISK"" > or something. > > Motherboard is ASRock A785GMH/128M, socket AM2+, SB700, memtest86 runs > fine (from an SD-card when the disks are present) and the Kubuntu DVD > also boots as normal (have not allowed it to run to see if it will > recognise the "array"). > So what exactly "normal" means here? Do you have any evidence bootloader on this DVD can see disks? > So this is just AMD firmware RAID, using the Promise "pdc" driver. I > know that on a different AMD motherboard (SB710, 760G) I could not get > Linux to boot (fully) but it was clear Grub didn't have any problems > back then. The installed Grub on both test disks (usb + harddisk) is the > Ubuntu version that is over a year old. I mean that it is at least as > old as May 2015 as I mentioned under my developer nick on the devel > list. So I haven't tried an actual new version yet based on current Git. > > Is anything like this expectable or known? > Usually add-on controllers have boot ROM that needs to be activated on power on; so the very first sugestion would be to verify that this is the case. Do you see array in the list of boot devices in BIOS setup? _______________________________________________ Help-grub mailing list [email protected] https://lists.gnu.org/mailman/listinfo/help-grub
