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4.1 Quick Erase
The function will ONLY erase the index of the HDD. It is the quickest way to
erase HDD.
4.2 Full Erase
The function will erase the whole sectors on the target HDD. It will take a
longer time than quick erase.
4.3 DoD Erase
This is to comply with the U.S.A. Department of Defense (DoD5220) standard
to fully erase the HDD three times bit-for-bit to overwrite HDD data and
guarantees data not recoverable. This DoD erase method will erase HDD over
each sector three times: the first time with zeros (0x00), second time with FF
(0xFF) and the third time with random characters.
4.4 DoD Erase & Compare
Besides DoD erase 3 times, this function will also execute comparison to make
sure the random bit is correctly written.
DoD EraseComp Method:
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFFFFFF
FFF
FFFFF
########
########
########
########
########
########
########
########
########
####
########
########
########
########
########
########
########
########
########
#####
Step1. 0 x 00
Step2. 0 x FF
Step3. Random
Step4. Compare
[02] 74.5G
Erase (3) [4M]
5.2G
Port No.
Total capacity
Erased capacity
Erase No.
*The third times of erase.
Erase pattern