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I ran a "full format operation" (unchecked "quick format") on my disk. Does this remove data in a secure way? I have read answers for related questions and looked on Wikipedia, but am still unclear how it works.
I feel like it doesn't fill every byte with zeroes, but instead it just checks for bad disk sectors and reallocates them. I'm mainly looking at security aspects for this question. It looks my disk is insecure for data restore.
pop in a linux live cd, and over write the partition with /dev/urandom and then with /dev/zero. for insane level of paranoia repeat the process more than a couple times. :P – Sujoy – 2011-10-30T13:56:48.833
Or write a simple Java/whatever program that writes files to the disk until it fills up. – Daniel R Hicks – 2011-10-30T18:42:49.490
possible duplicate of Are there any performance benefits to fullly formatting a hard drive (versus a quick format)?
– Breakthrough – 2011-11-02T12:10:22.657