GParted 0.11.0 --enable-libparted-dmraid Libparted 2.3 Delete /dev/sda2 (ntfs, 243.23 GiB) from /dev/sda 00:00:01 ( ERROR ) calibrate /dev/sda2 00:00:00 ( SUCCESS ) path: /dev/sda2 start: 3,074,048 end: 513,169,407 size: 510,095,360 (243.23 GiB) delete partition 00:00:01 ( ERROR ) libparted messages ( INFO ) Partition(s) 5 on /dev/sda have been written, but we have been unable to inform the kernel of the change, probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before making further changes.