System disks are the EVS disks attached on device name /dev/sda or /dev/vda. Currently, system disks can only be detached offline, which means that the server containing the to-be-detached system disk must be in the Stopped state. Therefore, you need to first stop the server and then detach the system disk.
Bootable disks are the system disks detached from servers. A bootable disk can be re-attached to a server and be used as system disk or data disk depending on the device name selected.
The Elastic Cloud Server page is displayed.
When the server status changes to Stopped, the server has been stopped.
The server details page is displayed.
After the operation had succeeded, the detached system disk is no longer displayed under the Disks tab.