# Do I Need to Detach an EVS Disk Before Expanding Its Capacity?

An expansion consists of two phases:

1. Expand the disk capacity on the management console.
   - A shared, in-use disk cannot be expanded. You must detach the shared disk from all its servers and then expand its capacity.
   - A non-shared, in-use disk can be expanded, and you can leave the disk attached during expansion as long as the following conditions are met:
     - The disk's server is in the Running or Stopped state.
     - The disk's server OS supports the expansion of In-use disks.
2. Log in to the server and create a new partition or allocate the additional space to one that is already there.
   - In Windows, there are no partition extensions that require the partition to be unmounted first.
   - In Linux:
     - When allocating the additional space to an existing partition, that is, extending an existing partition, you must use the umount command to unmount the partition first.
     - When allocating the additional space to a new partition, that is, creating a new partition, you do not need to unmount the existing partition.

Parent topic: Capacity Expansion