Hello,

I am using a linux operating system on virtulbox machine (main operating system is ubuntu).

So I used this command to add additional 20 mb.
e33@e33:~/VirtualBox VMs/Kali$ VBoxManage modifyhd Kali.vdi --resize 40960

by opening gparted, i got the following:

/dev/sda1 ext4 / 20 GiB
/dev/sda2 extend 800 MiB
unallocated unallocated 20 GiB

I just want to resize ext4 to 40 GiB.
I try to unmount ext4, but no possible.

any idea how to proceed in order to extend the ext 4 to 40 GiB?

Best regards

Edit
I run the O.S on recovery mode, and I can use parted, but I am not so familiar with this application and i dont make problems with the partitions.

ext4 is the filesystem. The device is /dev/sda1.

Your sda1 partition is a primary partition, so you will need to remove the extended partition in order to increase the size of the primary.

also, you'll need to be booted from outside the device. You can not make changes to the partition table of the device you are currently booted from.

1 members found this post helpful.

Thanks for these information dolphin,
But extra help will be appreciate

The easiest way will be to boot from a livecd that also has gparted. Once you are running live, you can remove the extended partition, in your case /dev/sda2 (backup data first if you need to, because anything in the extended partition will be lost). You can then resize the primary partition.

I just download magic partition, and unmount /dev/sda1 & /dev/sda2.
But I didn't find a way to increase /dev/sda1 as it only can be decreased, but sda2 can be increase.

you can't extend the partition because your space is not continuous, and the free space is behind /dev/sda2. You will have to delete /dev/sda2 before you can add space to /dev/sda1.

If there is data in /dev/sda2, when you delete it, you WILL LOSE IT.

1 members found this post helpful.

I found out how:

http://www.rootusers.com/use-gparted...ive-partition/

Thanks man