Reliably Erasing SSDs
Some may find this paper from Usenix FAST 11 interesting:
Reliably Erasing Data from Flash-Based Solid State Drives
interesting. so basically if you use something like hdtune and gutmann an ssd it might not actually do much? :)
I usually use the manufacturer provided tools to "wipe" the SSD before reinstalling Windows.
In OCZ's case, they suggest "wiper" and "hdderase" depending on which controller you have. That's good enough for me. Only way to securely erase data is to destroy the drive IMO. Anything else just causes unnecessary wear.
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