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SSD and Trim

minime2k9
(@minime2k9)
Active Member

Does anybody have any references to some good papers on SSD/TRIM commands?

Or equally valid source that explains why deleted data may still be recovered from an SSD?

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Topic starter Posted : 19/04/2022 5:01 pm
Bunnysniper
(@bunnysniper)
Active Member
thefuf
(@thefuf)
Active Member

https://dfir.ru/2020/06/12/trim-and-unallocated-space/

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Posted : 19/04/2022 9:22 pm
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minime2k9
(@minime2k9)
Active Member

Thanks for the links! I had read the first one but the second one was definitely new to me.

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Topic starter Posted : 20/04/2022 1:07 pm
Rich2005
(@rich2005)
Senior Member
Posted by: @minime2k9

Thanks for the links! I had read the first one but the second one was definitely new to me.

Not strictly answering your original question but I found this page helpful:

Garbage Collection and TRIM in SSDs Explained - An SSD Primer | The SSD Review

This being with respect to the garbage collection aspect particularly (and written by someone who works for a a controller manufacturer, LSI, judging by the comments).

MKF_608 SSD Garbage collection Tech Brief.indd (kingston.com)

Garbage Collection – the silent enemy of data recovery | Data Recovery Ireland

I only provide these with respect to the point that @thefuf makes on this old thread: Hash debate – General Discussion – Forensic Focus Forums in that future hash values of SSDs may well not match (since there seem to be a few articles out there putting everything down to TRIM - when, in fact, garbage collection can occur regardless of TRIM).

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Posted : 21/04/2022 11:55 am
minime2k9
(@minime2k9)
Active Member

@rich2005 Thanks Rich, very useful!

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Topic starter Posted : 21/04/2022 3:16 pm
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