Rescan Proxmox Disks
There are many reasons that some dangling disk images files exists in Proxmox folder. To remove them from the Proxmox storage, might not be possible, and they might be not shown in VM hardware items as well.
Use rescan command
This is to fix the following issues
- Disk size change
- Disk images with no owner
Rename or move old disk
If rescan can not fix the issue, rename the old disk or disk folder, then restart VM to confirm the disk file is not necessary. Then remove disk.