On 08/28/2011 03:35 AM, Jordan Uggla wrote:
On Thu, Aug 25, 2011 at 4:59 PM, Goh Lip<[email protected]> wrote:
Using grub 1.99, have failed to boot iso files (loopback, casper) when
located in btrfs partitions. Have tried setting search to uuid, label, file
and using (hdx,y) instead too. All failed to boot.
Failed to boot how? What error message do you see? If you run "ls -l"
at the grub shell do you see the btrfs filesystem listed? If you try
running each command separately at the grub shell (loopback, linux,
initrd, boot) do any of them fail?
############################### START ################################
grub> ls
(hd0), (hd0,msdos11),.........(hd0,msdos1)
grub> ls (hd0)
Device hd0 - Not a known filesystem -Total size 488397168
grub> ls (hd0,1)
Partition hd0,1 : Filesystem type btrfs - Label "Uno", UUID
4051bc43-1b86-4f34-ad0d-ef731ed2c376 - Partition starts at 2048 - Total
size 81920000 sectors
grub> insmod part_msdos
grub> insmod btrfs
grub> set isofile="/uiso/pod0.iso"
grub> search --no-floppy --file --set=root $isofile
grub> loopback loop $isofile
grub> linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=$isofile
nopersistent noeject noprompt quiet splash
grub> initrd (loop)/casper/initrd.gz
grub> boot
[no output or error message before last 'boot' command]
stdin : error 0
/scripts/casper-premount/20iso-scan: line 46 : can't open dev/sr0 :No
medium found.
Busybox v1.1.13.3(Ubuntu 1:1.13.3-1ubuntu11) built-in shell(sh)
Enter 'help' for a list of built-in commands
(initramfs) stdin: error 0
/scripts/casper-premount/20iso-scan: line 46 : can't open dev/sr0 :No
medium found.
Could not find the the ISO /uiso/pod0.iso. This could also happen if the
file system is not clean because of an operating system crash, an
interrupted boot process, an improper shutdown, or unplugging of a
removable device without first unmounting or ejecting it. To fix this,
simply reboot into Windows, let it fully start, log in, run 'chkdsk /r',
then gracefully shut down and reboot back into Windows. After this, you
should be able to reboot again and resume the installation.
############################### END ################################
o file above is remastered and initrd is initrd.gz not initrd.lz
o using usual livecd file (initrd.lz) gives same results as above
o moved file/s to another btrfs partition with another directory name
gives similar results.
As stated on earlier post,
o booting using same instructions to same files located in ext4
partitions boot successfully. [note]
o used different search parameters (uuid, label, (hd0,1)/sda1) result in
similar boot failures as above.
[note] on successful boots of ext4 files
- stdin : error 0 *is* there
/scripts/casper-premount/20iso-scan: line 46 *not* there
Regards and thanks - Goh Lip
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