The Epyx Fast Load Cartridge did much more than just increase the speed of data between a 1541 disk drive and a Commodore 64. Features included a Machine Language Monitor and Disk Tools.
The Disk Tools, accessed by pressing the poundBritish Pound Sterling symbol (#£) at the READY prompt allowed the following features: Directory, Copy Disk, Disable Fastload, Edit Diskette, and File Tools (Directory,Copy,Delete,Lock,Unlock,Rename)
<<NOTENOTE: there is some controversy about the mention of the British poundPound Symbol: In the manual for the Epyx Fast Load and on the Commodore 64 Keyboard, the symbol is described as the British Pound Symbol and is signified by the symbol # - I have kept this in transcripted versions of the answermanual, since having to be aligned withtype ALT-0163 may not have occurred to the original software publicationtranscribers. SourceFound a scan of the original manual here, thanks to Lemon 64, a great resource for all things Commodore Relatedretro-commodore.eu which has the correct original symbol: http://www.devili.iki.fi/pub/Commodore/docs/Project64/hw/epxflc10.txt)
http://www.retro-commodore.eu/download.php?file=Epyx_Fast_Load_Cartridge_Instruction_Manual.pdf
The Disk Editor may be a tool useful to you - I never used it since I was mainly interested in games, but the Fast Load cartridge is ubiquitous and commonly available. Not sure how to mount one in VICE. You can easily obtain a FastLoad manual with a cursory google search.