Just got a and interested in running Windows 7 within Parallels. I understand Windows 7 optimises itself for running on SSD's by disabling various bits etc* (see below extract from wikipedia). What I wanted to know is if your running Windows 7 as a virtual OS on a Macbook Air with SSD will it realise its on a SSD? or will the emulated drive be seen as a traditional HDD in Windows 7? Thanks! * Windows 7 is optimized for SSDs as well as for hard disks. The OS looks for the presence of an SSD and operates differently with that drive. If an SSD is present, Windows 7 will disable disk defragmentation, Superfetch, ReadyBoost, and other boot-time and application prefetching operations. It also includes support for the TRIM command to reduce garbage collection of data which the OS has already determined is no longer valid (without TRIM the SSD would be unaware of this data being invalid).