KDiskMark is an HDD and SSD benchmark tool with a very friendly graphical user interface.
GParted Partition Editor
GParted is a free partition editor for graphically managing your disk partitions.
Li-Disks tsa GNOME
Li-Disks tsa GNOME, gnome-disk-image-mounter le gsd-disk-utility-notify ke lilaebrari le likopo tsa ho sebetsana le lisebelisoa tsa polokelo.
Sesebelisoa sa Ts'ebeliso ea Disk
Disk Usage Analyzer is a graphical application to analyse disk usage in any Gnome environment.