losetup

Set up and control loop devices. More information: https://manned.org/losetup.

• List loop devices with detailed info:

losetup -a

• Attach a file to a given loop device:

sudo losetup /dev/loop /path/to/file

• Attach a file to a new free loop device and scan the device for partitions:

sudo losetup --show --partscan -f /path/to/file

• Attach a file to a read-only loop device:

sudo losetup --read-only /dev/loop /path/to/file

• Detach all loop devices:

sudo losetup -D

• Detach a given loop device:

sudo losetup -d /dev/loop