For proper operation of SSD storage devices on Windows 7 it is important that "TRIM" is enabled in the operating system. "TRIM" provides an additional command set for a SATA drive to keep the drive synchronized with the file system so it is aware of which areas have data and which areas do not currently hold data. This allows the drive to optimize performance by using the unused space when moving data blocks for erase and wear leveling.
To check if it is enabled:
1. Open a Command Prompt with Administrative privileges (In start menu type "cmd", locate "cmd.exe" in search list, right click to "run as administrator").
2. Enter the following command in the cmd.exe window:
fsutil behavior query DisableDeleteNotify
If the result is '0' TRIM is enabled.
To enable TRIM:
1. Open a command prompt as in #1 above.
2. Enter the following command in the cmd.exe window:
fsutil behavior set DisableDeleteNotify 0
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