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Crucial C300 SSD TRIM supported in Lion w/TRIM enabler for SL

Davmeister

Davmeister

macrumors 6502
Original poster
May 7, 2009
334
87
London
Just tried out the Dev preview of Lion (latest build) and TRIM is not natively enabled for the C300 SSD. On my SL partition if I use TRIM enabler, it doesn't really work...after a while TRIM seems to get turned off. However on Lion, it sticks for weeks, so I am making the assumption that TRIM will be either natively supported in Lion GM or permanently enabled with TRIM enabler as I have it now. The more you know.
 
Davmeister said:
Just tried out the Dev preview of Lion (latest build) and TRIM is not natively enabled for the C300 SSD. On my SL partition if I use TRIM enabler, it doesn't really work...after a while TRIM seems to get turned off. However on Lion, it sticks for weeks, so I am making the assumption that TRIM will be either natively supported in Lion GM or permanently enabled with TRIM enabler as I have it now. The more you know.
Click to expand...

Screenshot here FYI
 

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Davmeister said:
Just tried out the Dev preview of Lion (latest build) and TRIM is not natively enabled for the C300 SSD. On my SL partition if I use TRIM enabler, it doesn't really work...after a while TRIM seems to get turned off. However on Lion, it sticks for weeks, so I am making the assumption that TRIM will be either natively supported in Lion GM or permanently enabled with TRIM enabler as I have it now. The more you know.
Click to expand...

Hi mate, is that a SSD in your Mac or external ? If external, which enclosure are you using ?
 
Strange that the TRIM is disabled on your setup on regular basis.
I run both Lion and SL with a Intel 320 SSD and TRIM enabler. Did it ones, and it always stays on.

BTW I have bought a OWC SSD with a Sandforce controller. Those do not need TRIM at all.
 
ScubaCinci said:
Every SSD needs TRIM over long term usage to maintain optimum performance. What makes you say it doesn't?
Click to expand...

I had a long chat with someone of OWC. They did a lot of tests with Sandforce controllers and TRIM in the past. It seems using TRIM had a negative effect.
The hardware 'trim-a-like' support in the Sandforce controllers should be much better and transparent compared to the software TRIM.

For all other controllers, TRIM is a must though.
 
Atarikid said:
Strange that the TRIM is disabled on your setup on regular basis.
I run both Lion and SL with a Intel 320 SSD and TRIM enabler. Did it ones, and it always stays on.

BTW I have bought a OWC SSD with a Sandforce controller. Those do not need TRIM at all.
Click to expand...

It is strange....enabled in SL disabled in L. Oh well. I'm gonna secure erase and start fresh with Lion anyway. Probably a sensible time to do it for anyone with an SSD that needs that kind of maintenance.
 
Davmeister said:
It is strange....enabled in SL disabled in L. Oh well. I'm gonna secure erase and start fresh with Lion anyway. Probably a sensible time to do it for anyone with an SSD that needs that kind of maintenance.
Click to expand...

A ATA secure erase (not DU secure erase) is certainly a good start for a full clean OS install.
 
Davmeister said:
I know this......but I don't know what utility to do it with for a crucial C300 SSD on a Mac. Ideas? Thanks.
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As far as I know you can only do this on a PC.
But I read somewhere you can use a Linux boot cd to do the same. But many have issues with this.

So, PC is the only secure way doing it.

BTW correct me when I am wrong though. ;)
 
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