You are most likely to see this label in the following scenarios:
: Likely refers to "Client Enterprise" or a similar licensing channel. X64 : Indicates the architecture is 64-bit . ces x64frev
: Generally denotes a Volume Licensing version or a specific variant of the release. EN-US : Specifies the language is English (United States) . You are most likely to see this label
: Some PC manufacturers (like Toshiba) have used similar naming conventions for pre-installed recovery partitions or discs. How to Manage a "CES_X64FREV" Drive ces x64frev
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.