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Cannot find core.img on a 3Tb GPT usb disk

From: lukshuntim
Subject: Cannot find core.img on a 3Tb GPT usb disk
Date: Mon, 12 Aug 2013 21:42:58 +0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130803 Thunderbird/17.0.8


I want to install grub2 onto a 3Tb GPT usb disk in linux mint 14 (which is based on ubuntu quantal) and have created the BIOS boot partition before installing grub2. Here's the partition layout as seen by parted.

Disk /dev/sdc: 3001GB
Sector size (logical/physical): 4096B/4096B
Partition Table: gpt

Number  Start   End     Size    File system  Name      Flags
 2      1049kB  2097kB  1049kB               BIOSBOOT  bios_grub
 1      210MB   2990GB  2990GB               BKUP

Grub2 was then installed onto /dev/sdc (after mounting /dev/sdc1 on /mnt/bkup) with

grub-install --target=i386-pc --recheck --boot-directory=/mnt/bkup/boot --debug /dev/sdc

grub-mkconfig -o /mnt/bkup/boot/grub/grub.conf

All grub2 files were indeed created but during booting from the usb disk, it dropped to a grub rescue shell saying "file not found". Running the bootinfoscript (from showed this message

"Grub2 (v1.99) is installed in the MBR of /dev/sdc and looks at sector 2048 of the same hard drive for core.img, but core.img can not be found at this location."

Any help will be much appreciated.


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