![]() bat file, paste the defrag X: /L /U /V command into Notepad, hit 'File'->'Save As' and save it as trim.bat. Last I have never seen any benchmarks for an SSD used in the optical bay so you may be maxing the speed out for that port. Another option is to make a batch file with 'defrag X: /L /U /V' (X is the letter of your SSD) and use it manually, or set up a schedule in Windows Scheduler. If you search how to enable TRIM in Yosemite there are instructions available. If you dont open an elevated command prompt as described above (link) you will get the error: The FSUTIL utility requires that you. It runs automatically in the background unless you have turned it off. You can make them work but you have to disable Kext signing (a new security feature in Yosemite) before using the TRIM enabler. Microsoft Windows from 7 forward supports Trim. If you have Yosemite the TRIM enablers will not work. You can enable TRIM using a TRIM enabler (googe search they are easy to find) if you have anything older than Yosemite. If you ahve been using it for sometime with TRIM disabled (Apple disables TRIM for 3rd party SSD by default) the slower speed may be related to TRIM. Check if TRIM is enabled in your Windows Youll need to check this from an Administrator Command Prompt window. SanDisk release a FW that would lock the legacy Extreme SSD to 3Gb taking the negotiation away from the Nvidia chip set but since Apple nor Nvidia support that chipset any longer SanDisk has not released a similar FW for current SSDs.Īs for TRIM how long has you been using the SSD? If it is new TRIM being disabled would not be the issue. Nvidia chipsets have a problem linking at 3Gb and will only link with SSD at 1.5Gb. If you see 3Gb for both the link speed and the negotiated speed the SSD is linked up correctly. That said, running RAID mode on your SATA controller when not using a RAID array would be an example of improper configuration that will probably kill trim support on most drive. Not sure what SATA chipset a mid 2009 Macbook has but it is probably a 3Gb chipset. Regardless, there isn't a way to turn on Trim in Windows 10, if things are configured properly and correct drivers are installed, it will just do it automatically. You can go to system information > Serial ATA here it will show you the Link speed of the SATA chipset and the negotiated link speed of the SSD.
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