Scott McEachern wrote:
2) Do you mean there could still be data residing on unused parts of
the SSD? Yes, it can happen.
Yes, this is what I'm referring to. I was hoping there was some way to
instruct the drive controller that the entire drive space is "free"?
SSDs have their own way of wear-leveling. What the filesystem
considers to be cylinder X, head Y and sector Z will probably not be
the same *physical* cells on the SSD twice in a row. That's not a
function of the OS, but the SSD itself.
I understand. That's why I'm concerned about #2 above.
Would dd'ing to the drive all 1s then all 0s be effective?
I see Intel has an SSD Toolbox that does "secure erase". It requires
windows so I am unable to check it out.
www.intel.com/go/ssdtoolbox
I wonder what this utility does to achieve "secure erase"? Can we
replicate its functionality with standard Unix tools?
