After installing a Solid State Drive in a Windows 7 machine to improve performance in contrast to a normal hard disk drive. I spend some time to find information about the TRIM-support.
A TRIM command allows an operating system to inform a solid-state drive about blocks of data that are no longer considered in use and can be wiped internally.
This technique improves the performance of a ssd drastically.
execute from (CMD) command line with Administrator privileges:
fsutil behavior query DisableDeleteNotify
DisableDeleteNotify = 0 will mean that TRIM is activated
DisableDeleteNotify = 1 TRIM is deactivated
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