Sometimes when trying to wipe a disk in Proxmox, the system gives an error message “disk/partition has a holder (500)”.
This error typically comes when the disk in question has already been used, and contains a logical volume. This “old” configuration needs to be removed before the disk can be wiped. This is how I do it:
In the Proxmox Shell, type lsblk. Debian will list the volumes. Locate the disk that you are trying to delete under the column NAME. Starting at the bottom of the list, type dmsetup remove <NAME>
Remove all entries for the disk in question, until only the disk is listed (e.g. sda). Try the wipe command again.
