Episode 12 — Storage mental model: block devices → partitions → filesystem → mount
Storage questions on Linux+ are easier when you treat storage as a layered model rather than a pile of commands. This episode builds the foundational chain: block devices provide raw capacity, partitions or logical volumes carve it into usable segments, filesystems organize data structures on top, and mounts attach those filesystems into a single directory tree. The exam frequently tests your ability to identify which layer is failing, because the symptoms differ: a missing block device suggests discovery or hardware, a wrong partition table suggests layout or identifiers, and a mount failure often points to filesystem integrity or incorrect mount options. You’ll learn the vocabulary of each layer so you can parse scenario prompts quickly and make the right “next check” decision without guessing.
we expand into real-world reasoning patterns that show up in PBQs. You’ll practice diagnosing whether a device is present but unmapped, mapped but unformatted, formatted but unmounted, or mounted but unusable due to permissions or read-only remounts. We also address safe operational habits: confirm device identity before writing changes, prefer non-destructive inspection first, and verify mounts after changes to avoid surprises at reboot. Finally, you’ll learn how to interpret common trap conditions like stale device names, inconsistent UUID references, and changes that appear successful until the next restart, which is a common way the exam tests persistence versus transient state. Produced by BareMetalCyber.com, where you’ll find more cyber audio courses, books, and information to strengthen your educational path. Also, if you want to stay up to date with the latest news, visit DailyCyber.News for a newsletter you can use, and a daily podcast you can commute with.
