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Level 1

10 points

Apple Branded SSD shows no Trim ??

So I just installed a Toshiba / Apple SSD in my 2011 MBP, installed ML fresh install and it's saying No Trim Support ?? What gives ??

I'm at my wits end with this.

Could it be that I needed to install Snow Leopard 10.6.8 first ?

This is what About My Mac says:

APPLE SSD TS256B:

Capacity: 251 GB (251,000,193,024 bytes)

Model: APPLE SSD TS256B

Revision: AGAA0205

Serial Number: 69MS108WT0SZ

Native Command Queuing: No

Removable Media: No

Detachable Drive: No

BSD Name: disk0

Medium Type: Solid State

TRIM Support: No

Partition Map Type: GPT (GUID Partition Table)

S.M.A.R.T. status: Verified

Volumes:

Posted on Nov 13, 2012 4:15 AM

26 replies

alexxn Author

Level 1

10 points

Nov 13, 2012 7:36 AM in response to dmdimon

When I enabled TRIM with the enabler it said something to the effect of not supported. I disabled and re-enabled several times, also tried repairing permissions and nothing worked.

dmdimon

Level 3

856 points

Nov 13, 2012 7:47 AM in response to alexxn

I see 3 cases:

1) not updated pre-boot parts of system - if so it will recover with Disk Utility repair

2) trim enabler irrecoverably disabled trim in kext (small probability) - if so it will re-enable itself on next major system update or reinstall

3) Apple SSD with early firmware edition without trim support. I don't know if there were ones, but it can be. If so - there should be firmware update for them at Apple site (good case) - or SSD firmware update was integrated in iMac firmware update (bad case)

alexxn Author

Level 1

10 points

Nov 13, 2012 7:57 AM in response to dmdimon

dmdimon wrote:

I see 3 cases:

1) not updated pre-boot parts of system - if so it will recover with Disk Utility repair

2) trim enabler irrecoverably disabled trim in kext (small probability) - if so it will re-enable itself on next major system update or reinstall

3) Apple SSD with early firmware edition without trim support. I don't know if there were ones, but it can be. If so - there should be firmware update for them at Apple site (good case) - or SSD firmware update was integrated in iMac firmware update (bad case)

1) I'm hoping this is the case. I'm wondering if I need to even go as far as to reformat and delete and create a new partition to try this also.

2) I tried reloading Mountain Lion a few times before I even tried the TRIM hack so I doubt this is the case. TRIM always showed as "No"

3) This is the one that worries me 😟

dmdimon

Level 3

856 points

Nov 13, 2012 7:59 AM in response to alexxn

no need to repartition. DU on whole drive will re-write everything if needed.

alexxn Author

Level 1

10 points

Nov 13, 2012 8:06 AM in response to dmdimon

Yes I will try to repair later.

I just looked at Apple Support downloads and I'm completely up to date on all EFI and Firmware.

I also don't see any other downloads that would look like a Hard Drive Firmware.

I wish I just bought a 3rd party SSD but I figured the Apple one would work best 😟

dmdimon

Level 3

856 points

Nov 13, 2012 12:58 PM in response to alexxn

Hey, it works and its fast, yes? so just periodically give it possibility to do nothing hour or two for garbage collect do its deeds. Not a catastrophic thing.

Every time you get something somewhere in world appears something better, so what? Next years ssd again will be better than this year best ones, thats a life.

it works, fast and reliable - as well as yours MBP now - so go be happy 😉