Tag Archives: c300

OS X 10.7 Lion Adds TRIM Support, But Not For All

Posted on by Mahmoud Al-Qudsi
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I just happened to upgrade the firmware on my Crucial C300 256GB SSD drive in my MacBook Pro (13″ Unibody, Late 2008) on the same day that I upgraded to OS X 10.7 Lion. In my previous post, I touched briefly on the fact that 10.7 in the renamed “System Information” app under the “Serial-ATA” section does not detect my SSD as having TRIM support.

This is one of the very top SSD models out there in terms of performance and size, and it’s been proven in multiple benchmarks (though with the C400 coming out, things are set to change once more); and has proven to be a popular choice for MacBook owners due to the large size and incredible performance even without TRIM in previous versions of OS X.

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C300 Negotiated Link Speed on OS X

Posted on by Mahmoud Al-Qudsi
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This is just a quick note for anyone using the most wonderful Crucial C300 on OS X.

If in the “System Profiler” (now renamed to the more apt “System Information” in OS X 10.7 Lion), you see:

Link Speed: 3 Gigabit

Negotiated Link Speed: 1.5 Gigabit

And are wondering where your remaining 1.5 (or 4.5 if you have a 6 Gbps SATA controller) gigabits went, then you need to upgrade the C300 to the latest firmware. This appears to be an issue with the 0002 firmware that is resolved in 0006. Unfortunately, this does not seem to make OS X 10.7 aware that the C300 supports TRIM.

Also a tip: if after upgrading to revision 0006, your OS X will hang at boot, re-run the upgrade. It won’t actually upgrade it again (and will finish instantly), but it appears to fix something important.

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