I do not know how to determine that.Īnd except for this serendipitous discovery in Disk Utility, I do not know of a general-purpose way to do a "TRIM All unused". In Windows that supports TRIM, it may be turned on at an early stage in the BIOS, so it may be working as you install.
#Best ssd for mac pro mid 2010 for mac os x#
It does not seem to be documented in the manual for Mac OS X fsck command in any way, so it may only exist in Disk Utility. I stumbled across this feature in Disk Utility in 10.6 and later completely by accident, and realized this was a way to do a thorough "Repair Disk and mark 'deleted' blocks as surplus". Once enabled, TRIM will notify of blocks as they are deleted, but will not reach back and notify of the blocks deleted before TRIM was enabled. The reason I suggest the last step is that during System Installation (without TRIM Enabled) you may have created many "deleted" blocks. If all is well, you will get an additional message: "TRIM-ing unused blocks" Run the Utility and enable TRIM for each drive you want. This may cause unintended consequences on certain drives. TRIM Enabler from groths makes a patch to enable TRIM for any SSD that claims to support it. But Apple routines do not send these commands to non-Apple-tested drives, as Apple has not tested these. This clogs it up, and performance on many SSD drives goes way down.Īpple-certified SSD drives use TRIM to notify the SSD which blocks have been deleted. But lacking a notification of what blocks are "deleted", the SSD continues to carry ALL those "deleted" blocks as if they were good data. This works fine for a rotating drive that will later simply overwrite deleted blocks.
To re-write a (partial) superblock, it must read-erase-modify-write, a very slow procedure.īut no general-purpose notification is sent to the drive that the "un-needed" data blocks should be considered "deleted". I think a cheaper Crucial BX500 is best for the 2010 mac mini and can be found for less than 30. Simple, effective, and FAST.Īn SSD cannot write anything but a completely empty block, and its internal blocks are HUGE. The best ssd’s are probably the Samsung 870 ssd’s but the 2010 mac mini uses sata 2 for the ssd connector which means that even if you get an awesome ssd, it’s not going to change the performance that much. Re-use merely overwrites entire blocks (no read-modify-write involved).
When a file is deleted with traditional rotating drives, only the directory entry is cleared, and the actual data blocks are simply added to the free pool to be re-used later. In my opinion, SSD drives have a problem because of an assumption in File Systems.
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