If you see a drive with this name in your "This PC" folder and you didn't intend to install Windows, it is likely just a taking up a drive letter.
: When using tools like Rufus to create installation media, the software will scan the ISO and display this label as the internal volume ID. ces x64frev
: Stands for "Free" build, which in Microsoft terms means a standard retail/production version (as opposed to a "Checked" or "CHK" build used for debugging). If you see a drive with this name
The string is a volume label or internal identifier for a Windows ISO file or a physical DVD. It follows a standard Microsoft naming convention: The string is a volume label or internal
: Some PC manufacturers (like Toshiba) have used similar naming conventions for pre-installed recovery partitions or discs. How to Manage a "CES_X64FREV" Drive
: Likely refers to "Client Enterprise" or a similar licensing channel. X64 : Indicates the architecture is 64-bit .