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Comments
Shouldn't affect HDD.
Cancer for SSD.
It is also going to be 100% useless on SSD is not it?
Since OS does not really know where data is actually stored and reliably overwriting something from OS level will be completely impossible....
Not sure why it wouldn't just discard those blocks, that way it doesn't hurt SSD's.
Francisco
You mean normal file deletion on SSD actually erases the file permanently from the disk?
Trim or GC erases data, however there is no guaranteed way to know it actually did. If your configuration supports trim in theory data should be erased shortly after deletion, but with no way to be 100% sure.
Simply trying to overwrite data, however,(which is the way software like this worked on hdd-s) is totally useless as it is almost guaranteed to write physically different sectors and do nothing apart from causing additional ssd wear.
In general SSD-s are really interesting in terms of security...