Installing gpt with GParted


Installation of gpt (G Partition Table) is an operation in which a loss of data is possible. In fact, any change of partition table is considered sufficiently dangerous to warrant a warning - so consider yourself warned and back up anything of importance.

The second point is that any operation that affects disk setup can usually be done in several different ways. Installation of gpt with GParted is not claimed to be the only way, not even the best way, but it is the way that I have tried and tried successfully. As it has attracted some interest, it is probably worth while to record it.


gparted can be downloaded from the highlighted link. Please read the messages about the dangers before the download. The simplest way is to create a bootable cd or a bootable memory stick. The latter is mandatory if you are going to use it on a netbook without a cd drive.

It is probably worth while to show what gparted looks like:


The top most row displays main menu with the following items:

Procedure I used

Let me describe what I did in the demonstration at the SIG meeting, North side. We installed in an external hdd the gpt with a single partition. The controlling computer was my netbook, so we first booted to gparted, using the memory stick with a copy of bootable gparted. The next step is to select the disk to install the gpt. There is a complete loss of data on the selected disk, so it is important to select the correct disk. It is useful to have different size disks, to facilitate differentiation between the disks. To select the disk, click on the GParted menu item and from the drop down list select the disk on which the gpt will be installed and which will be wiped clean of all data. This is a critical step, which, unfortunately will be different on different machines. I consider that it is least confusing not to attempt to describe one particular situation because it will only apply for that particular machine. You will have to figure this out for yourself.

Once the correct disk is identified, the rest is relatively smooth sailing. Click now on the menu item Device and find an option Create Partition Table. Click on it and see a dire warning Warning. This will erase all data on the entire disk etc. Heed the warning - this is your chance to go back and re-check your settings. If you decide to proceed, click on the Advanced button. The image will change to something similar to the following.


You can still escape by canceling the process! Now click on the button marked msdos and from the drop down list select gpt. Select it and select the options to proceed. Then create the desired number of primary partitions, format them with the desired file system add the partition labels - all in much the same way as we used to do with msdos style partition table.