File Type ReadyBoost Cache File IconReadyBoost Cache File
File Format Proprietary (Microsoft)
Usage Open manually; may run a program or script when opened
Rank ★ ☆ ☆  Uncommon

SFCACHE files are created on flash memory devices by the ReadyBoost feature in Windows Vista. By default, they are named ReadyBoost.sfcache.

ReadyBoost is a feature that allows an external flash memory device to be used as extra RAM. To enable ReadyBoost, first connect a flash drive to your Windows Vista machine. Then right-click the device's icon in My Computer and select "Properties." Finally, click the ReadyBoost tab and choose "Use this device."

Open With

IconMicrosoft Windows

Updated May 14, 2009