Enlarge partition on SD card
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chenwj
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Published on 2012-09-20T18:47:24Z
Indexed on
2012/09/20
21:42 UTC
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I have followed Cloning an SD card onto a larger SD card to clone a 2G SD card to a 32G SD card, and the file system is ext4. However, on the 32G SD card I only can see 2G space available. Is there a way to maximize it out? Here is the output of fdisk
:
Command (m for help): p
Disk /dev/sdb: 32.0 GB, 32026656768 bytes
64 heads, 32 sectors/track, 30543 cylinders, total 62552064 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: 0x000e015a
Device Boot Start End Blocks Id System
/dev/sdb1 * 32 147455 73712 c W95 FAT32 (LBA)
/dev/sdb2 147456 3994623 1923584 83 Linux
I want to make /dev/sdb2
use up the remaining space. I try resize2fs /dev/sdb
after dd
, but get message below:
$ sudo resize2fs /dev/sdb
resize2fs 1.42 (29-Nov-2011)
resize2fs: Bad magic number in super-block while trying to open /dev/sdb
Couldn't find valid filesystem superblock.
Any idea on what I am doing wrong? Thanks.
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