blag/post/change-partition-type-without-reformatting.mdwn

   1 [[!meta title="Change partition type without reformatting"]]
   2 [[!meta date="2011-01-02 17:29"]]
   3 [[!meta author="rohieb"]]
   4 [[!meta license="CC-BY-SA 3.0"]]
   5
   6 Note to myself: it is possible to change the partition type of a already
   7 formatted (and used) partition. For example, if you have already
   8 formatted the partition with NTFS, but accidentally had created it with
   9 partition type `0x83` (Linux), so Windows can’t read it, since it expects
  10 `0x07` (HPFS/NTFS). On Linux, you can use sfdisk for that purpose:
  11
  12     # Be root
  13     # dd if=/dev/sdb of=sdb-bootsector count=1  # backup boot sector
  14     # sfdisk -d /dev/sdb | sed -e 's/Id=83/Id=07/' > /tmp/sdb.txt
  15     # sfdisk /dev/sdb < /tmp/sdb.txt
  16
  17 (fill in the right values for your case)
  18
  19 Of course, good old fdisk works also, use the `t` command.
  20
  21 [(Source)](http://serverfault.com/questions/46758/can-you-change-the-partition-type-on-a-linux-server-without-starting-up-fdisk/46840#46840)
  22
  23 [[!tag hacking howto useless_bits_of_information fdisk Linux
  24     Master_Boot_Record NTFS partition partition_table partition_type
  25     sfdisk]]