I have 5 internal drives, one is the boot, and 5 external drives ranging from 3 Tb to 5 Tb. Which version of CCleaner will clean ALL the drives. Which command would I use to point to the drive(s)?
CCleaner by default only cleans the drive Windows is installed on. However you can use 'Options -> Include' to direct it to clean other files or folders - see here:
http://www.piriform.com/docs/ccleaner/using-ccleaner/including-files-and-folders-for-cleaning