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TRIM for Third-Party SSD!


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#21
dabear

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Does anyone know how to verify contents of disk sectors in os x? Basically, I want to check if TRIM is actually working. On linux I can use the hdparm command, but that does not exist on os x.

Here is how to test automatic TRIM support on Ubuntu linux:
http://www.ocztechno...ll=1#post479503

So basically to verify TRIM working, we need to:

1) write to a temp file
2) find its starting block in the file system
3) delete the file
4) wait a couple of minutes for trim to zero out the deleted files blocks
5) read the sector of the previous file, to verify that it only contains zeros.

Finding a file's begin_lba and how to read only sectors of a disk is the issue.

#22
Guest: lemoon_*

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Nice read, thanks guys!
BTW: just read this "Install Mac OS 10.7 Lion on a unsupported Mac system", does this really works?

#23
nanofunk.net

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after running the TRIM ENABLER, my system freezes from time to time. i am not completely sure if enabling trim really is the problem, since the console.app does not show any information except "IOSurface: buffer allocation size is zero" (which seems to be related to flash and not the ssd).

anyone else having issues?





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