Secure Erase Samsung 840 EVO on Ubuntu

[Afterlife737]

HI,

 

After messing around with my 840 EVO a bit wth partitions and installing 4 different Ubuntu distros in partitions, I need to secure erase my SSD ( or format it but heard it's not recommended) how do I Secure Erase my SSD on Ubuntu ??

[alpenwasser]

You mean you want to erase all data on it?

Several ways. You could just zero the entire drive:

dd if=/dev/zero of=/dev/ssdpath bs=1M

That will probably be the fastest way. If you need

to randomize the drive:

dd if=/dev/urandom of=/dev/ssdpath bs=1M

That will be a pretty slow operation though, I usually

get around 5 MB/s write speed for that.

EDIT:

Be careful though that you select the correct drive,

dd will not ask for confirmation, it will just do what

you tell it to.

[N7_Zer0]

http://www.thomas-krenn.com/en/wiki/SSD_Secure_Erase

[Afterlife737]

You mean you want to erase all data on it?

Several ways. You could just zero the entire drive:

dd if=/dev/zero of=/dev/ssdpath bs=1M

That will probably be the fastest way. If you need

to randomize the drive:

dd if=/dev/urandom of=/dev/ssdpath bs=1M

That will be a pretty slow operation though, I usually

get around 5 MB/s write speed for that.

EDIT:

Be careful though that you select the correct drive,

dd will not ask for confirmation, it will just do what

you tell it to.

I made a few partitions and so and am missing about 16gb of storage. So instead of the 116Gb or so I am left with when installing Ubuntu I am left with 104Gb. No partitions though come up when I look at Disk utilitization I only have this one boot drive but have a fresh install of Ubuntu, so I don't mind reinstalling it