MHDD Erase & Fast Erase

[ruelnov]

To Dmitry:

Regarding ERASE & FAST ERASE commands, which one is equivalent to the ATA-specified Security Erase Prepare + Security Erase Unit?

And does it operate in Enhanced Mode?

[Dmitry_Postrigan]

FASTERASE is using security prepare+erase. What is enhanced mode?

[ruelnov]

enhanced mode (in contrast to normal mode which only zero fills) overwrites user data with predetermined data patterns & also overwites those sectors which are no longer in use due to reallocation.

if you still remember the working draft of T3 (doc # T3/1321D, revision 3) for ATA/ATAPI-5, this enhanced erase mode can be initiated by setting bit 1 of WORD 0 for the security password.

can this be done with MHDD FASTERASE?

also, does FASTERASE leaves the drive unlocked when erase is completed? i mean, the one that's equivalent to UNLOCK+DISPWD?

[Dmitry_Postrigan]

I didn't implement enhanced mode. You can use scripts to do that manually.

According to ata/atapi, drive will be unlocked by itself, there is no need to unlock it after successfull erase.

[ruelnov]

Thanks, Master Dmitry.

To be able to do it manually using scripts, it would mean coming up with a COM file for this enhanced feature and invoke it under MHDD using .comfilename, right?

[Dmitry_Postrigan]

Not COM, but just text
Right.

[fabio]

please Dmitry? can script UNLOCK drive ignored password?

[Dmitry_Postrigan]

Yes. You have to write a script which will access the system area and get the password from it. You have to get commands for accessing the system area, find where the password is stored, and get it.

[ruelnov]

Not COM, but just text
Right.

You mean an .asm file would do without compiling?

[Dmitry_Postrigan]

I mean mhdd scripring engine (look into the docs)

[fabio]

thank you Dmitry mhdd is a very powerful tool!!!
I am lay to access HEALTHY hdd
and it is necessary that the manufacturer supplies information of the model of the hdd I have HITACHI
locked
.