Disk wiping: Difference between revisions
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:Security: | :Security: | ||
: Master password revision code = 65534 | :: Master password revision code = 65534 | ||
: supported | :: supported | ||
: not enabled | :: not enabled | ||
: not locked | :: not locked | ||
: not frozen | :: not frozen | ||
: not expired: security count | :: not expired: security count | ||
: supported: enhanced erase | ::: supported: enhanced erase | ||
: 3min for SECURITY ERASE UNIT. 442min for ENHANCED SECURITY ERASE UNIT. | :: 3min for SECURITY ERASE UNIT. 442min for ENHANCED SECURITY ERASE UNIT. | ||
:[...] | :[...] | ||
Revision as of 11:37, 20 September 2014
- To wipe an HDD by writing zeros to it:
# dd if=/dev/zero of=/dev/sdX iflag=nocache oflag=direct bs=4M
- The average speed is about 100 MB/s, so 1 TB takes about 3 hours.
- To print transfer statistics (to stderr):
# killall -USR1 dd
- To wipe a SSD by the ATA Security Erase command:
- Make sure the drive is not frozen:
# hdparm -I /dev/sdX
- [...]
- Security:
- Master password revision code = 65534
- supported
- not enabled
- not locked
- not frozen
- not expired: security count
- supported: enhanced erase
- 3min for SECURITY ERASE UNIT. 442min for ENHANCED SECURITY ERASE UNIT.
- [...]