Comment Not sure what's confusing... (Score 1) 491
(1.) It may be hard to securely erase an SSD. Due to things such as wear leveling, the relationship between sector addresses and physical flash cells isn't transparent to the OS. And ATA Secure Erase isn't implemented or isn't implemented correctly on all SSDs.
(2.) SSDs are hard to recover. That's because they may start erasing some blocks containing data (and not just the entry in the file allocation table) shortly after you delete a file in the file system. Again, this happens due to things such as wear leveling and isn't transparent to the OS. Contrast this to a hard drive where, following a file delete, only the entry in the allocation table is deleted but no actual data.
I don't see anything contradictory or confusing here