in sp2 there is an inf and corresponding sys file for a ramdisk, ramdisk.inf and ramdisk.sys. this does not appear to be the same as the ramdisk from here: http://support.microsoft.com/kb/257405, as the version is different and the inf configures a different sub-set of keys/values under the service. i can get the driver installed (on WinFLP it is installed by default). i just cannot get an actual drive to use it, and i have tried the settings in the above KB article. the xp driver can be installed using devcon.exe. devcon install ramdisk.inf Ramdisk does anyone have any experience using this built-in xp ramdisk? i have already read a million pages about 3rd party ramdisks and such, but since this is included in a WinFLP install, i would like to make use of it for cache redirection and such for a VDI template. i also checked and vista has the same (similar) inf and sys files, and checking the registry properties of a running Vista PE environment, i can not see anything that tells the system to assign X: to the ramdisk. so, how do i assign a drive letter and set the disk size?