Change the partition number on Linux
Author: Infong Date: 02 Nov 2011 Category: os Comments
When we operating partition on Linux (such as delete partitions, create partition, change partition sizes), the partition number is not in accordance with the disk partition.
As my disk partition, it’s the case above. As normal, the partition ‘/dev/sda2’ should be ‘/dev/sda3’, ‘/dev/sda3’ should be ‘/dev/sda4’ and ‘/dev/sda4’ should be ‘/dev/sda2’, the extended partition needn’t change.
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 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: 0xa9943039
Device Boot Start End Blocks Id System
/dev/sda1 * 63 39070079 19535008+ 83 Linux
/dev/sda2 132825420 234522623 50848602 83 Linux
/dev/sda3 234522624 625141759 195309568 83 Linux
/dev/sda4 39070080 132825419 46877670 5 Extended
/dev/sda5 39070143 42973874 1951866 82 Linux swap / Solaris
/dev/sda6 42973938 44933804 979933+ 83 Linux
/dev/sda7 44933868 74236364 14651248+ 83 Linux
/dev/sda8 74236428 93755339 9759456 83 Linux
/dev/sda9 93755403 132825419 19535008+ 83 Linux
Partition table entries are not in disk orderSO, how to fix this issue?
There are two ways at this time:
-
Use command ‘f’ under fdisk:
# fidsk /dev/sda Command (m for help): x #(extra functionality) Expert command (m for help): f #(fix partition order) Expert command (m for help): w #(write table to disk) -
Rebuild partition table
Recommended to use testdisk, is a good partition table recovery program, on how to rebuild the partition table using testdisk, please Google to get related-information.
After fix the partition order, we should modify /etc/fstab and /boot/grub/menu.lst, so the system can find the correct partition after next reboot.