Grub runs upto stage 1.5 then gives error 17
Hi all, I have one 80 GB HDD which has Windows XPSP2 (NTFS based) Ubuntu 6.06 upgraded to Ubuntu 6.10 (ext2). It had GNU GRUB 0.97 running underneath it all. Everything was running fine suddenly yesterday it gave me error 17. Looking in Grub Legacy came to know tht error 17 means :- http://www.gnu.org/software/grub/manual/grub.html#Stage1_002e5-errors 17 : Cannot mount selected partition This error is returned if the partition requested exists, but the filesystem type cannot be recognized by GRUB. Now in such should I re-install everything or is there some sorta hack which can make it good without re-installing the whole thing. Lastly when we should be able to see Grub2 being used in main-stream distros. Thnx in advance. -- This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 2.5 License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/2.5/ or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA. ___ Bug-grub mailing list Bug-grub@gnu.org http://lists.gnu.org/mailman/listinfo/bug-grub
Fallback for SATA and IDE drives when booting from a CD?
I posted the following on grub-devel before I realized that this was the better list for it... We are booting from a CD which needs to forward to a bootable hard drive (if possible). The hard drive might be SATA, might be IDE. My current menu.lst looks something like this: # timeout 10 default 0 fallback 1 2 title boot from SATA drive root (hd0,0) kernel /vmlinuz root=/dev/sda2 panic=5 boot title boot from IDE drive root (hd0,0) kernel /vmlinuz root=/dev/hda2 panic=5 boot title Boot from CD root (cd) kernel /boot/vmlinuz root=/dev/ram0 init=/linuxrc initrd /boot/initrd.img boot # The only difference between entries 0 and 1 is in the root=/dev/?da2. If we were booting from writable media, we could use default savedefault and savedefault fallback commands to chain from one entry to the other after a kernel panic. Unfortunately, that's not the situation. As it is this menu.lst works with SATA drives but not with PATA or IDE drives. I can switch this around by reordering the entries (or modifying default and fallback) but I can't seem to get Is there a way for grub to substitute the correct /dev/* depending on whether the drive is SATA or not? Even better would be a way to make this work when booting from a CD: # timeout 10 default 0 fallback 1 title boot from hard drive rootnoverify (hd0) chainloader +1 title Boot from CD root (cd) kernel /boot/vmlinuz root=/dev/ram0 init=/linuxrc initrd /boot/initrd.img boot # Can this be made to work? If so, what am I missing? Thanks, Russel Hill ___ Bug-grub mailing list Bug-grub@gnu.org http://lists.gnu.org/mailman/listinfo/bug-grub
[RFE] Installing grub into an XFS partition
Please cc: me, I am not subscribed to bug-grub. As we all know, you cannot install grub into an XFS partition because the XFS superblock is in sector 0 of the partition. grub-install must not overwrite sector 0 which means that you cannot use 'chainloader +1' to boot a secondary grub menu from an XFS partition. This is frustrating when testing multiple distributions in separate partitions. It is so much easier to have a top level grub menu that boots from the MBR and lists the available distributions, then uses chainloader to boot from each distribution. Each distribution's partition contains its own specific second level grub menu. It turns out that this process can be made to work, even for an XFS partitions :- * Create a partition to contain the top level menu. menu.lst contains a list of distributions and uses chainloader to boot from each partition. MBR points at this top level menu. The partition can be any format, and it can be as small as one cylinder. * For partitions that do not use sector 0, do a normal grub-install using that partition's local /boot and writing to sector 0 of the partition. No change. * The top level menu uses 'chainloader +1' for partitions when the secondary stage1 is in sector 0. No change. * For partitions that do use sector 0 (e.g. XFS), do grub-install using that partition's local /boot. Instead of overwriting sector 0 of the XFS partition, tell grub-install write to sector 0 of any partition that is not being used as a secondary stage1. I use sector 0 of the partition that contains the top level menu; its sector 0 is free because the MBR contains the stage1 file for the top level menu. Say you write to sector 0 of /dev/sda1. grub-install --root-directory=/mnt/xfs /dev/sda1 * dd if=/dev/sda1 (say) bs=512 count=1 /mnt/xfs/boot/grub/stage1.copy * The top level menu uses 'chainloader (hd0,n)/boot/grub/stage1.copy' for partitions when the secondary stage1 cannot be installed in sector 0. IOW you chainload from a file instead of sector 0. AFAICT, there is no requirement that _any_ secondary stage1 must be in sector 0, it is just an historical convention. Writing the XFS stage1 to a spare sector then copying the result to a file in the XFS filesystem works for me (TM). Now for the RFE. Could grub-install be enhanced so it can optionally write the updated stage1 data to a file instead of only being able to install in sector 0 of a partition? That would remove the need to write to a separate partition then dd the result to a file. IOW grub-install --root-directory=/mnt/xfs /mnt/xfs/boot/grub/stage1.copy ___ Bug-grub mailing list Bug-grub@gnu.org http://lists.gnu.org/mailman/listinfo/bug-grub
Re: Doesn't boot Linux on SATA, but OpenBSD
So, when I root (hd0,1,a) followed by chainloader +1, it boots to OpenBSD splendidly. But root (hd0,0) [ext2 filesystem], makeactive, kernel vmliuz--- ro root=/dev/sda6, initrd ..., boot dies with pivot_root ... cannot open /dev/console ... Kernel panic. Yes, /dev/sda6 is '/' What is it that I make wrong here ? Though I have yet to solve it, it seems I can absolve grub. After plenty of research I found the problem to be with Debian, either a kernel problem (missing driver) or a devfs/udev problem. Now I am having to sort out a Debian-problem as it seems. My excuses for the noise on the grub-list, Uwe ___ Bug-grub mailing list Bug-grub@gnu.org http://lists.gnu.org/mailman/listinfo/bug-grub
