Add a loopback device, Where the number at the end is the starting point (You can get it from parted)
losetup /dev/loop1 /hds/3tb/2tb.img -o 700144058880
See what devices are linked
losetup -a
Remove the link
losetup -d /dev/loop0
Add a loopback device, Where the number at the end is the starting point (You can get it from parted)
losetup /dev/loop1 /hds/3tb/2tb.img -o 700144058880
See what devices are linked
losetup -a
Remove the link
losetup -d /dev/loop0