To remain secure, must one use a different external storage devices per VM / security domain? Can one use a single external storage devices to store files from multiple VMs securely, and if so, how?
Is creating multiple encrypted partitions on a USB drive, each only mounted and unlocked in it's relevant VM, a good option? (This would require multiple passphrases and I believe recognizing the relevant partition from it's partition number / size, which seems a lot of effort).
I'm assuming that moving untrusted files between an untrusted VM and a USB drive, and moving trusted files between a trusted VM and the same partition on the USB drive is a breach of security through compartmentalization. Is that correct?
I understand that "Backup Qubes" is the best way to backup and restore multiple VMs, but I just want to move some files between multiple VMs and an external device. I have read the documentation and searched the list but feel like I'm missing something. Many thanks in advance.
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