http://bugzilla.novell.com/show_bug.cgi?id=525237 User juhliarik@novell.com added comment http://bugzilla.novell.com/show_bug.cgi?id=525237#c17 --- Comment #17 from Jozef Uhliarik <juhliarik@novell.com> 2009-08-14 02:51:45 MDT --- Piotrek, thanks for yast logs. I know there is little bit misunderstanding of terminology. I am sorry for it. I try to use complete desription of boot settings instead of names of checkbox from y2-bootloader. ;-) OK lets start: comment#12: ========== * Please take a fact that GRUB doesn't know to boot from LVM you need separate /boot partition out of LVM (yast2-storage should warning you during creating LVM that you need separate /boot partition) * Boot from raid0 is not possible if it is software raid. GRUB works with physical partitions not with sw raid partitions and in this case it is not possible use physical partitions because raid0 doesn't dulicate(mirroring) data on physical partitions but use only part from each physical partition. It means GRUB hasn't chance to read from (for example) /dev/sda1 (/dev/sda1 is one of physical partition from raid0) content of /boot directory. But basic problem is that GRUB has not code for using software raids and it means it doesn't know to use software raid partitions. comment#14: ========== I am sorry I wrote it wrong. You can have /boot partition or if you haven't separate /boot partition you can have "/" and there /boot directory on md raid (but only raid1) Next it is mandatory to write GRUB in to MBR other scenarios where is uses "write generic boot code" to MBR doesn't work as I wrote it before (comment#11). Yes your link is valid but for older openSUSE somebody change kernel caching and it doesn't allow to use other scenario of booting than write GRUB to MBR. y2-bootloader propose write GRUB to MBR during installation. Please doesn't ask me about details. It is kernel problem. comment#15: ========== I see in bugzilla problem with mkinitrd and LVM maybe it is solved now. The bug will be reassign to maintainer of mkinitrd. Finally: ======== I hope that now it is clear for everybody how GRUB works with md raids and LVM -- Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.