Closed Beta vs. Open Beta Often there are two beta testing phases, open beta and closed beta. An open beta also known as a public beta is beta testing open to any user, who is known as a beta tester.
1 Always run USMT from an account with local administrator rights (Right-click Command Prompt and choose Run as Administrator) 2  Always make sure you have enough free space to store the migration data.  Try not to use expensive searches (i.e. don't search every drive for .exe files)
Trim (computing) A trim command (known as TRIM in the ATA command set, and UNMAP in the SCSI command set) allows an operating system to inform a solid-state drive (SSD) which blocks of data are no longer considered in use and can be wiped internally. Trim was introduced soon after SSDs were introduced.