The short answer
No. Your data. Shrink it from its app; don’t delete the folder.
What is it?
This covers virtual disk files of 1 GB or more (.qcow2, .vmdk, .vdi, .vhd, .vhdx) found in your home folder outside the usual virtual machine apps. Each one is the hard disk of a virtual machine or emulator: a whole operating system with its apps and files.
Disks of virtual machines found outside known VM apps. They hold whole systems and files: offload, never deleted automatically.
What happens if you delete it?
No. A deleted disk cannot be rebuilt; the system and files inside it are lost unless backed up.
How to remove it properly
Find out which app uses the disk first. If it belongs to a VM you no longer need, delete the VM from that app. To keep it, shut the VM down and move the disk to an external drive.
Better moved to an external drive than deleted.
Before you delete it
A disk may still be attached to a VM in another app; moving or deleting it breaks that VM.
How MoreRoom helps
MoreRoom recognises this as your data and never suggests deleting it. It shows how much space it takes, so you can shrink it from its own app.
Frequently asked questions
Is it safe to delete .qcow2, .vmdk or .vdi disk files?
No. Your data. Shrink it from its app; don’t delete the folder. No. A deleted disk cannot be rebuilt; the system and files inside it are lost unless backed up.
Will Virtual machine and emulator disks come back after I delete it?
No. No. A deleted disk cannot be rebuilt; the system and files inside it are lost unless backed up.
How do I remove Virtual machine and emulator disks properly?
Find out which app uses the disk first. If it belongs to a VM you no longer need, delete the VM from that app. To keep it, shut the VM down and move the disk to an external drive.