I'm having an issue with my OCZ SSD where it "disappears" to the OS when stressed or, it seems, when it heats up. If I do too many read/write cycles, the drive seems to disappear. I was able to cool it off by putting my refrigerator and backed it up. Some large files seem to be missing portions; when rsyncing, it will pass half the file then the operation will stop. Some folders that are supposed to have files in them return nothing when opened.
I'm returning it to Toshiba under warranty, but I'm mildly concerned that some of my files may be available if the drive is repairable. This may include private files, family pictures, my password keychain, research, etc., and while I suspect the people at Toshiba will act professionally, due diligence tells me I should erase the drive.
I have overwritten the first portion of the disk in an attempt to test whether my drive or my computer was at fault. The drive was encrypted; it overwrote the key and at least part of the index, but I'm wondering if there's a key at the end.
I know that TruCrypt has a backup key at the end so that you can recover the drive; does Ubuntu do the same thing? The drive is encrypted, so I think that if I erase the keys, it won't be recoverable.
Also, I know that there are tools to flip bits in windows, is there a way to do this from Ubuntu?