Re: [Libguestfs] Change partition type

Richard W.M. Jones
Tue, 30 Sep 2014 08:01:10 -0000

On Mon, Sep 29, 2014 at 11:15:59PM +0000, Marcos Amorim
wrote:
> Is there any way to change the partition type using python-guestfs?
>
> I'm trying to recreate an NTFS partition, but can not change the
> type to NTFS (7 identifier in frisk)
>
> Filesystem from my disk
> g.list_filesystems()
> {'/dev/sda1': 'ntfs', '/dev/sda2': 'ntfs’}
>
> Fdisk
> print g.sfdisk_l(device)
>
> Disk /dev/sda: 51200 cylinders, 64 heads, 32 sectors/track
> Units = cylinders of 1048576 bytes, blocks of 1024 bytes, counting from 0
>
>    Device Boot Start     End   #cyls    #blocks   Id  System
> /dev/sda1   *      1     100     100     102400    7  HPFS/NTFS
> /dev/sda2        101   51199   51099   52325376   83  Linux
> /dev/sda3          0       -       0          0    0  Empty
> /dev/sda4          0       -       0          0    0  Empty

If it's MBR, then you can use g.part_set_mbr_id ("/dev/sda", 2, 7)

For GPT use part_set_gpt_type which is similar but you have to use
a GUID.

Rich.

--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines.  Supports shell scripting,
bindings from many languages.  http://libguestfs.org