<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> These days, just use TRIM support. As long as your filesystem isn't 100% full, this is going to achieve the same (actually better) effect. With either approach, the drive will have plenty of unused space for wear leveling. With TRIM, the drive also knows not to bother copying data around for sections of the disk that are not used. If, in spite of the advice above, you insist on doing the underprovisioning thing, look into setting an HPA (host protected area). You can tell the drive to report that it is smaller (e.g. you can ask your 200 GB SSD to report as 150 GB). An HPA, being a thing set on the drive, persists across installs. Keep in mind that setting an HPA erases all the data! <pre class="moz-signature" cols="72">-- Richard</pre> </body> </html>