Fill a disk with an ext4 partition in a script

Question

I tried to use parted for scripted partitionning like so :

parted -a optimal /dev/sda mklabel gpt mkpart primary ext4 1 -1

But it complains about -1 not being a recognized option. Still the same sub-command works in the parted prompt. So my question is how to use the same options in a script ?

Answer 1

Finally found a solution :

parted -s -a optimal /dev/sda mklabel gpt -- mkpart primary ext4 1 -1s

-- is very important for it to work here.

Note the use of ‘--’, to prevent the following ‘-1s’ last-sector indicator from being interpreted as an invalid command-line option.

Answer 2

You can also use --script option. In this case you should put your script part in single quotes.

Example:

parted --script /dev/sda 'mkpart primary ext4 1 -1'