After wasting an evening trying various things, I thought I'd just post here for (hopefully) a simple answer to this question! I want to install a clean copy of Windows 7 on my Intel X25-M 80GB SSD. It's been my main, boot drive for a while. I'm aware that performance of this SSD degrades over time, and that a secure erase (using Intel's HDDERASE tool) can reset the blocks in the drive back to zero (can you tell I don't really understand this properly?) or reset it to its factory condition or whatever. So I'm trying to do that before I reinstall Windows. However, I'm not having a lot of joy, and I just wondered if anyone here could tell me whether simply using the 'Format' tool in the Windows 7 installation process would have the same, total resetting effect. Do I really need to keep working on trying to boot my PC to DOS so that I can run the HDDERASE tool (ludicrously difficult), or will just formatting the drive as part of the installation produce the same performance improvement? Thanks!!