Lexar BootIt is a small, free utility designed specifically for Lexar USB flash drives (though it often works with other brands). Its primary purpose is to toggle a USB drive between two operating modes: and fixed disk (also known as local disk).
By default, most USB flash drives are recognized by Windows as “removable” devices. This limits their use for certain advanced tasks—most notably, creating multiple partitions on the drive or installing Windows To Go. When a drive is switched to “fixed disk” mode, Windows treats it like an internal hard drive, allowing full partition management and enabling it to be used as a bootable drive for operating system installations. lexar bootit