I have a 512 SSD which is partitioned into essentially two 256 areas. One for Windows, the other for Linux (Ubuntu). Neither is encrypted. I want to clean my system up, but am only concerned about the linux partition. I understand you can not securely delete files from ssd due to the firmware deciding where to put data.

My question is if the linux partition is wiped/formatted then encrypted with a reinstall, will that sufffice or will the old data be spread across partitions (wear-leveling)?

This may seem like a silly question, but my knowledge of this sort of thing is limited.


Wear leveling is independent of partitions. All of your data is spread out over all of the flash chips in the SSD.

  • While generally true there are secure designs that erase returned blocks. – zaph Oct 4 '18 at 21:25
  • 1
    @zaph which would still be independent of partitions – Josef Oct 5 '18 at 8:57
  • So I read from that the whole disc would need to be dealt with – tim.massey Oct 11 '18 at 3:39

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