The TRIM command helps to maintain the performance of solid state drives (SSDs) at an optimal level over the lifetime of the drive. TRIM functions by actively deleting invalid data from the SSD’s memory cells to ensure that write operations perform at full speed. Since a memory block must be erased before it can be re-programmed, TRIM improves performance by pro-actively erasing pages containing invalid data, allowing the SSD to write new data without first having to perform a time-consuming erase command.
For more information about TRIM support, see:
- SSD pages contain no data.
- User writes data to SSD pages.
- User deletes some data. Pages are marked as "not in use" by the OS, but data remains on SSD.
- TRIM command tells SSD controller that pages contain invalid data. Pages with invalid data are cleaned.
- Data is written back to SSD memory cells. The invalid data had been cleaned and data is able to be written to the pages at full speed.
This tutorial will show you how to check the current status of TRIM support
for SSDs, and to enable or disable TRIM in Windows 7
and Windows 8
You must be signed in as an administrator
to be able to do the steps in this tutorial.