URL:
<http://savannah.gnu.org/bugs/?31148>
Summary: Grub Loopback Module Does not Contain Offset
Functionality
Project: GNU GRUB
Submitted by: kaboosh
Submitted on: Tue 28 Sep 2010 10:22:34 AM GMT
Category: Disk & Partition
Severity: Major
Priority: 5 - Normal
Item Group: Feature Request
Status: None
Privacy: Public
Assigned to: None
Originator Name: Jakub Sadowski
Originator Email: [email protected]
Open/Closed: Open
Discussion Lock: Any
Release:
Release: 1.98
Reproducibility: Every Time
Planned Release: None
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Details:
The Linux loopback module and tools allow for a loopback device to be created
with an offset from a file or device. To reproduce:
In Linux with a sata drive for testing:
dd if=/dev/zero of=/dev/sdX
losetup -o ARBITRARY_OFFSET_LESS_THAN_DISK_SIZE /dev/loopN /dev/sdX
mkfs.FSTYPE /dev/loopN
mkdir /mnt/loop && mount /dev/loopN /mnt/loop && mkdir /mnt/loop/boot
#memtest for testing - if grub can get the blue memtest screen we win!
cp /boot/memtest86-4.00 /mnt/loop/boot
umount /mnt/loop
losetup -d /dev/loopN
.
.
.
[build grub image with file system and loopback modules built in]
reboot
What grub2 commands do we use to access this offset filesystem?
_______________________________________________________
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