Wiping Disks

How fast can you wipe a complete disk? For this I dumped zeros to a MS Windows partition based on an SSD formatted with NTFS.

[root@i7 ~]# time dd if=/dev/zero of=/dev/sda1 bs=1M
dd: error writing '/dev/sda1': No space left on device
81920+0 records in
81919+0 records out
85898297344 bytes (86 GB, 80 GiB) copied, 182.699 s, 470 MB/s

real    3m2.703s
user    0m0.033s
sys     0m43.470s

It was a real pleasure to get rid of MS Windows after just 3 minutes 😉

Once more, second partition on SSD formatted with NTFS.

[root@i7 ~]# time dd if=/dev/zero of=/dev/sda2 bs=1M
dd: error writing '/dev/sda2': No space left on device
147015+0 records in
147014+0 records out
154155352064 bytes (154 GB, 144 GiB) copied, 326.108 s, 473 MB/s

real    5m26.110s
user    0m0.097s
sys     1m21.503s

Continue reading