Quote:
Originally Posted by Frice
I'm not sure, but using hdparm(8) (unfortunately, Linux only) you can reset the disk (aka “factory reset”).
“… all its cells will be marked as empty …” »»
Some Rescuedisks have that feature bundled. Also saw this guide to about over-provisioning. But a reset should do it just to null the blocks/cells. |
SSDs have large reserved space for reallocated sectors. At least some of these cells could be still be read even after reallocation. I doubt "factory reset" tries to clear them. SSDs have complicated code in firmware and at least some of them could be hacked (or bypassed by ports like UART, JTAG). Even HDD have enough computing Power to run Linux
http://spritesmods.com/?art=hddhack&page=7
Zeroing out (or doing "factory reset") should be enough if data is not so sensitive, but if you want to be sure just do this:
Backblaze: How to securely recycle or dispose of your SSD