Circlean/resize_img.md

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Add empty space to the image
============================
Add 2Gb
> dd if=/dev/zero bs=1024k count=2048 >> 2014-09-09-wheezy-raspbian.img
Expand partition size
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> fdisk 2014-09-09-wheezy-raspbian.img
Command (m for help): *p*
Disk 2013-02-09-wheezy-raspbian.img: 4087 MB, 4087349248 bytes
255 heads, 63 sectors/track, 496 cylinders, total 7983104 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
Command (m for help): *d*
Partition number (1-4): *2*
Command (m for help): *n*
Partition type:
p primary (1 primary, 0 extended, 3 free)
e extended
Select (default p):
Partition number (1-4, default 2):
First sector (2048-7983103, default 2048): *122880*
Last sector, +sectors or +size{K,M,G} (122880-7983103, default 7983103):
Using default value 7983103
Command (m for help): *w*
The partition table has been altered!
Syncing disks.
Resize partition
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> df | grep /mnt/arm
/dev/loop0 3927752 1955672 1794172 53% /mnt/arm_rPi
/dev/loop1 57288 18960 38328 34% /mnt/arm_rPi/boot
sudo resize2fs /dev/loop0