SSD, HDD, USB drive, or virtual block device.
Storage, Partition, and Mount Model
See disks, partitions, filesystems, mounts, and external drives as a layered storage model instead of a list of admin tools.
System map
Storage, Partition, and Mount Model
Storage changes become safer when you understand what layer you are touching before formatting, mounting, or changing partitions.
Diagram Physical device Partition or volume Filesystem Mount point or drive letter
A logical slice of storage prepared for a filesystem.
The structure that stores files and directories.
How the active OS exposes the storage to users and apps.
What to notice
- A physical disk, a partition, a filesystem, and a mount point are different concepts.
- Formatting changes the filesystem layer, while mounting attaches it into the active path tree.
- Inspection should always come before destructive storage actions.
Common confusion
- Using drive, partition, and volume as if they mean the same thing.
- Thinking mounting creates the filesystem.
- Thinking deleting a mount point deletes the underlying storage.
Best related lessons
M24 - Storage Architecture
Understand how disks, partitions, filesystems, and mount points fit together so storage changes make sense before any formatting or mounting commands are used.
M25 - Disk Management: GUIUse graphical disk tools to inspect disks and partitions safely, and understand which actions are low-risk inspection versus high-risk modification.
M26 - Disk Management: CLIInspect storage devices and mount points from the command line, and understand which commands are observational versus potentially destructive.
M27 - Storage Lab: External Drive SetupWalk through the storage setup sequence conceptually and in safe practice steps so external-drive preparation makes sense before touching real data.
Best related labs