grub error after installation: out of partition

[SkaarjZR]

Hello.
I've installed Ubuntu on external hard drive, but after reboot I got error: level loop.
I reinstalled Ubuntu, but after that I get error: out of partition.

To boot from external HD, I enter to boot menu in BIOS and select boot from ext. HD. I'm trying to boot on my notebook Asus K50IE. Ubuntu successfully starts from this HD on my another PC, so it looks like HW related problem. I updated BIOS but it didn't help.
Screenshot of error (http://savepic.su/2852297.jpg)


Disk /dev/sdb: 1000.2 GB, 1000202043392 bytes
255 heads, 63 sectors/track, 121600 cylinders, total 1953519616 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000563cf

Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 984432639 492215296 83 Linux
/dev/sdb2 984432640 992624639 4096000 82 Linux swap
/dev/sdb3 992624640 1953519615 480447488 7 HPFS/NTFS/exFAT

NTFS partition was added after installation. There is lilo installed on /dev/sda

I haven't found any helpful information :(

Do you have any clues? Do I need to post additional info?

[darkod]

If the same ext hdd boots OK on another PC, it seems the installation is good. Sometimes it might not be detecting the ext hdd fast enough to boot from it.

Or the grub2 and kernel files might have ended up too far into the disk. Some older boards have a limitation that they can't reach boot files beyond 137GB on the disk. I am not sure whether you might be affected by this.

If this is the problem, the solution would be to make a new installation this time with a small 500MB or 1GB /boot partition at the start of the disk. That way you are sure that the boot files will always be at the start.

You can view all details including the position of the boot files in the bootinfo that boot-repair can create for you.
https://help.ubuntu.com/community/Boot-Repair

[SkaarjZR]

Thank you, darkod!
Boot Repair told me the same about /boot partition
So I created it using gparted. Although Ubuntu booted from CD didn't wake up during moving partition. Thank god no changes were applied. I used gparted livecd.
And now I can boot into Ubuntu from external drive on my notebook!