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To what extent dœs mass-overwriting files with random data wear out NAND storage ? (lemmy.world)
submitted 1 week ago* (last edited 6 days ago) by Oberyn@lemmy.world to c/askandroid@lemdro.id
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Need to overwrite lots data (talkin ≳100 GB) using some thing like Extirpater in hopes it all can't be recovered . Hoping some one here will have knowledge whether this's safe for me to do as it's not really explained tꝏ well in provided link !

EDIT : Asked this in a discord the answer I got was that any phone NAND should take a few times it's full capacity in read write just fine as long's you're not doing it tꝏ often , so guess that means I'm in the clear ?

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[-] ThorrJo@lemmy.sdf.org 1 points 1 week ago

Bold of you to assume it's overwritten rather than being unlinked and having the random data written to entirely different flash blocks.

If you want to rely on "overwriting" data for security, you need deterministic storage; only CMR hard drives mostly qualify (leaving aside the question of bad-block remapping).

this post was submitted on 08 Nov 2025
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