Once you downloaded a Raspberry PI *.img file you may have a reason to look inside the image. Here is a shot config on how you do it:
First get your image file:
# ls -lh
total 1.9G
-rw-r--r-- 1 root root 1.9G Apr 24 14:35 2013-02-09-wheezy-raspbian.img
Next, check the filesystem table with fdisk:
# fdisk -l 2013-02-09-wheezy-raspbian.img
Disk 2013-02-09-wheezy-raspbian.img: 1939 MB, 1939865600 bytes
255 heads, 63 sectors/track, 235 cylinders, total 3788800 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 identifier: 0x00014d34
Device Boot Start End Blocks Id System
2013-02-09-wheezy-raspbian.img1 8192 122879 57344 c W95 FAT32 (LBA)
2013-02-09-wheezy-raspbian.img2 122880 3788799 1832960 83 Linux
Subscribe to RSS and NEWSLETTER and receive latest Linux news, jobs, career advice and tutorials.
The important note to take from the above output is:
- Sector size: 512
- start block: img1: 8192 and img2: 122880
Now create a directory mount point for both images:
# mkdir img1 img2
When your mount point directories are ready, mount both images with the sector size and start block information you have gathered in previous step:
# mount 2013-02-09-wheezy-raspbian.img -o loop,offset=$(( 512 * 8192)) img1/
# mount 2013-02-09-wheezy-raspbian.img -o loop,offset=$(( 512 * 122880)) img2/
Confirm that both images are mounted:
# ls img1/
bootcode.bin config.txt fixup.dat issue.txt kernel.img start.elf
cmdline.txt fixup_cd.dat fixup_x.dat kernel_emergency.img start_cd.elf start_x.elf
# ls img2/
bin boot dev etc home lib lost+found media mnt opt proc root run sbin selinux srv sys tmp usr var
