In 2001 IBM sold these types of USB drives called "memory keys" in 8MB size; today you can get them in gigs
[DOC] [TLE] ibm-l-lpic1104-pdf-devices-linux-filesystems-and-fhs-63pag - Scribd [PAR] By the end of this tutorial, you will know how Linux configures the hardware found 
on a ... You also learn about the Filesystem Hierarchy Standard (FHS), which .... 
accessible fixed-size blocks allows programs to use these block devices without 
...