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I beg folks answering this question to stick to the point, and refrain from answers such as "why do you run encryption anyway", or "use Bitlocker instead". This question is specifically about TrueCrypt and Windows7
I have copied encrypted system drive from one 240GB SSD disk to another 240GB SSD drive by making an exact sector-by-sector copy. I know that TrueCrypt does support TRIM, at least on system drives. At this time, I would assume the target disk thinks that every sector is in use, since every sector have been written to. I tried finding a utility, which will run TRIM on all unused sectors, but it seems that I cannot find any. There has been references to ForceTrim utility on OCZ forums, but it seems to have been either deleted or locked up, because I cannot access it.
Questions:
How do I force TRIM of all unused sectors on a system drive?
How do I verify that TRIM has been successful and drive indeed is aware of all unused space? How to tell, how many sectors are marked unused by the drive?
My drive is OCZ Vertex3
Do you know how do I test, how many blocks are marked in use, so that I could tell that they were indeed TRIM'ed? – galets – 2012-09-25T16:06:05.857
@galets: That would be a question for the OCZ forums. – surfasb – 2012-09-26T00:00:27.683
@surfasb Tried... Seems like OCZ forums are useless – galets – 2012-09-26T03:43:37.320
For Windows: Note that the Samsung Magician software (that ships with, e.g., the 840 series) also has a feature that does this (it's disguised as "Optimize Performance", but this is what it does -- it's specifically for systems without explicit TRIM support). I believe the feature can be used on any drive, it doesn't have to be a Samsung product. – Jason C – 2014-05-27T20:01:44.513