Судя по всему, вы не можете выбрать сетевые настройки, если вы все еще вошли в систему локально на коробке. Я вышел из системы, а затем смог выбрать сети в сеансе RDP.
Вам следует использовать Диспетчер логических томов .
Из Википедии:
LVM is used for the following purposes:
Creating single logical volumes of multiple physical volumes or entire hard disks (somewhat similar to RAID 0, but more similar to JBOD), allowing for dynamic volume resizing.
Managing large hard disk farms by allowing disks to be added and replaced without downtime or service disruption, in combination with hot swapping.
On small systems (like a desktop), instead of having to estimate at installation time how big a partition might need to be, LVM allows filesystems to be easily resized as needed.
Performing consistent backups by taking snapshots of the logical volumes.
Encrypting multiple physical partitions with one password.