What does Windows error code 20 (ERROR_BAD_UNIT) mean? Status / error code: Category: Constant name: Source: Operating System: Description: The system cannot find the device specified. Could be also: ConstantTypeOS KERN_INVALID_CAPABILITYKern returnMac ippStsNonIntelCpuIntel Ipp StatusAny ENOTDIRerrnoAny CREATE_DELETE_LOCK_NOT_LOCKEDBugCheck CodeWindows Looking for a different code? Search another status or error code.