How long do 7 DBAN Wipes take on a 500 GB Hard Drive ?

there are very sensitive company and banking informations on my notebook.
its the dell xps l502x from 2011

I would like to dban wipe it fully x 7 times at a very high security level
(which dban wipe setting would you recommend to make absolutely sure nobody could restore them?)

is there any way to slow this down to max 12 hours?

If it would take a week:
could I seperate my hard disc in 5 parts x 100 gb (if its 500gb big) and dban wipe
each one (100gb) a night with the last windows OS operating system part on the last night?

 

Quicker (and more fun) solution: hit the hard drive a few times with a sledge hammer. Make sure the platters are broken in pieces. I guarantee it will take much shorter than 12 hours to complete!

 

But I don want to get a new SSD I want to keep this old hard disc from 2011.

how long would it take?

I already thought about pouring some gasoline over it and lighting it up while hammer smashing it...



thought about getting the san disc extreme pro 490 gb or the samsung evo pro 850 ?

 

If you're going to continue using it, just do a full format and start using it?


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Why DBAN? Obviously you should be using Gutmann 35 pass method.

 

Alex has a point. If you're going to keep using the hard drive, why wipe it so thoroughly? Attempting to erase all traces of data with multiple DBan runs is impractical and unneeded if you're still going to be using it. Doing so would only make sense if you're getting rid of the drive. And if you're getting rid of the drive, it's a lot faster, easier, and more effective to destroy it than to do what you suggested in the opening post.

 

Formatting (and deleting files via the OS) doesn't actually delete any of the data on the drive (or file). All that does is mark that area as an area the OS is allowed to write data to. That is, there data before the format is still where it originally was, unless the OS overwrites it with new data. It's pretty trivial to recover "deleted" data from a drive (hell, it was a project I had to do in junior year for my CS program).

If you want to ensure that the data is truly gone, you have to overwrite all of it. Which is where something like DBAN comes into play.

 

Good to know! I didn't realize the difference between a quick and full format was just checking for bad sectors. [ http://www.extremetech.com/extreme/80478-tech-myth-2-quick-format-vs-full-format]

 

Well, depending on what program does the full format, it might not overwrite everything either. Better to be explicit imo.

Since this is on my head, for a SSD you can simply do a secure erase or encrypt the drive with a password, then change the password (throw out the original).

 

Lol that is true though.. Nothing works better than Physical destruction of the drive!