1, get offset
# parted bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img GNU Parted 3.1 Using /workspace/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Model: (file) Disk /workspace/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img: 3565MB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 4194kB 3565MB 3561MB primary ext4 boot (parted) unit B (parted) p Model: (file) Disk /workspace/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img: 3565158400B Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 4194304B 3565158399B 3560964096B primary ext4 boot (parted)
get the ext4 partation offset 4194304
or u can use fdisk:
fdisk -l /workspace/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img Disk /workspace/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img: 3565 MB, 3565158400 bytes, 6963200 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0xca52207f Device Boot Start End Blocks Id System /workspace/bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img1 * 8192 6963199 3477504 83 Linux
the offset is 8192(sectors) * 512 = 4194304 Byte
2,mount
mount -o loop,ro,offset=4194304 bone-debian-8.7-lxqt-4gb-armhf-2017-03-19-4gb.img /mnt/