Feature request: Ability to move ROMs back and forth to a USB OTG drive

[depau]

I think you should be able to move the ROMs on a USB drive in case you need space on the phone/tablet, instead of removing them. Making a backup of them and moving it to the USB drive doesn't look like a good idea.

You should be able to do this from TWRP's MultiROM settings and maybe from the MultiROM manager app.