Is a one pass zero wipe really enough to take secrets to their grave?
Is pic related the only option
Will you ever have an experience in which any of this repetitive hypothetical questioning will be useful?
Just do a 3 pass. Takes about 12 hours.
>>54670994
>Is a one pass zero wipe really enough to take secrets to their grave?
Some people say it isn't. But I can't imagine its an easy process.
I don't think they could be bothered even for kiddy porn suspects. Only for terrorists.
US DoD uses 7 passes as their standard iirc
>>54670994
1 pass is ok for normal stuff I guess
If you want to make sure all is lost then you can always do a gutmann and wipe it a total of 35 times for maximum peace of mind.
DOD does 7 I think
>>54670994
This is good reason to keep an older working system around. Just hook the drives up and turn wipe it 35 times. It might take a week but you aren't bothered with the process at all and the results are trouble free.
>>54670994
Just do a full disk encryption followed by a single wipe. It doesn't even need to be a full pass wipe at that point.
>>54672573
This. Do FDE and then cat random data to the MBR.
>>54670994
Providing there are no reallocated sectors (you'd need an ATA Secure Erase Enhanced to try to wipe those), and providing it is a perpendicular-recording drive (PMR), and NOT either an SMR (shingled magnetic recording) drive, or an SSD, both of which are journaled and therefore perform sector remapping all the time so might not actually wipe every sector you actually used unless you pass an ATA Secure Erase command to ask the firmware nicely to at least try (remember too that SSD block failure mode is failed writes/erases)...
...yes.
This also means you're very probably completely fucked in a data recovery scenario involving a dd zero-pass.
Write stripes are thicker than read these days. Even magnetic force microscopy techniques won't get you better than 0.51/0.49 bit probabilities on any modern PMR hard drive: good luck Hamming-distance your way out of that one.
Certainly one pass will do as well as 3 passes, or 7 passes, or 35 passes. (Gutmann warns that he designed 35 passes for MFM/RLL drives - you most definitely do not have one of those spinning anymore!)
Or you throw the fucking disk in acid.
Yes, retard.
