What is Root Disk?

A Root-disk is a part of the storage space (typically a hard drive) on which the operating system is installed and houses the root directory of the OS. It is originated from the operating system template at the time of installation. A root-disk has a fixed space allocated to it by the operating system; therefore, its size it cannot be expanded further. The amount of space allocated to the root-disk depends on the size of the OS template installed. Furthermore, storage space subscriptions do not consider the space that is used as root-disk a part of the subscription

Points to Remember

  • A root-disk is the only source from which the operating system can be booted because the operating system is installed on it. A data-disk cannot be used for booting the OS.
  • It is recommended to not clutter the root-disk with too many application and data as it can cause space shortage and may likely lead to performance issues.