Using the live demonstration to resize a Windows partition

Windows users may need to resize a partition in order to install a dual-boot system and free space for a GNU/Linux partition.


  • Make sure your computer is connected to a reliable power source and will not shutdown during partion resizing.
  • Make a complete backup of your data. When your backup is finised, disconnect the backup for the computer.

  • You should be aware that resizing partitions is not a normal daily maintenance task. This is an exceptional tool, which can fail and make your desktop system unusable. Preferably, you can also by a new hard disc and avoid partition resizing.

  • You should free at lease 20Mb for the system and 25Mb to store movies, which is a minimum.

Supported file systems

  • DOS, FAT16, FAT32 and NTFS partitions. 
  • Most Unix partitions can be resized. 
  • There is no support for resizing MacOsX partitions.

Required steps

Start a normal live session.

Unmount the disc that would like to resize. Right click on the disc and select "Unmount". You cannot resize a disc which is mounted.

Run gParted: in System menu, Administration menu, select Partition editor.

In gParted windows, select the partition that you wish to resize.

In Partion menu, select Move/Resize:

Move partition borders to resize the partition:

When done, click on Resize/Move:

When done, click on Apply changes.

Wait until your changes are fully applied. Depending on the size of the partition, this may take a long time.