Disk wiping: Difference between revisions
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To wipe an hdd by writing zeros to it: | To wipe an hdd by writing zeros to it: | ||
<code># dd if=/dev/zero of=/dev/sdX iflag=nocache oflag=direct bs= | <code># dd if=/dev/zero of=/dev/sdX iflag=nocache oflag=direct bs=1M</code> | ||
The average speed is about 86 MB/s, so 1 TB disk takes about 3h 15m. | The average speed is about 86 MB/s, so 1 TB disk takes about 3h 15m. | ||
Revision as of 21:59, 30 August 2014
To wipe an hdd by writing zeros to it:
# dd if=/dev/zero of=/dev/sdX iflag=nocache oflag=direct bs=1M
The average speed is about 86 MB/s, so 1 TB disk takes about 3h 15m.
To print transfer statistics (to stderr):
# killall -USR1 dd