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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.

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

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  • While generally true there are secure designs that erase returned blocks.
    – zaph
    Oct 4, 2018 at 21:25
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    @zaph which would still be independent of partitions
    – Josef
    Oct 5, 2018 at 8:57
  • So I read from that the whole disc would need to be dealt with
    – tim.massey
    Oct 11, 2018 at 3:39

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