How secure is merely TRIMing all of a SSD's blocks?

Re:How secure is merely TRIMing all of a SSD's blocks? by throw0101a on Wednesday March 08, 2023 @10:50AM (#35070478)

> the random device

/dev/zero would be sufficient.

Also easier to confirm things worked (if desired) since you know what to expect on read-back.

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Re:How secure is merely TRIMing all of a SSD's blocks? by jusssi on Wednesday March 08, 2023 @12:26PM (#35071942)

You're assuming the drive doesn't do something smart when it detects it's being filled with zeroes. It could at least in theory decide to do the same thing it does when you TRIM a sector.

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Re:How secure is merely TRIMing all of a SSD's blocks? by lazide on Wednesday March 08, 2023 @03:36PM (#35074398)

I suspect it won’t be long (if it isn’t already the case) that defacto run-length encoding is built into SSD firmware.

Write 5 gig of zeros? OK! You just got more drive reserve capacity!

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