How to mount img files automatically
Read img file and mount it to loopback:
losetup --partscan --find --show disk.img
View partions in loopback:
fdisk -l /dev/loop0
Mount loopback to file system:
mount /dev/loop0p1 /mnt/disk1
Free up loop0, use after umount:
losetup -d /dev/loop0