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Why is it important to unmount a filesystem before physically disconnecting the device?

hard📝 Conceptual Q10 of 15
Linux CLI - Disk and Storage
Why is it important to unmount a filesystem before physically disconnecting the device?
AUnmounting flushes cached data and prevents data loss
BUnmounting formats the device automatically
CUnmounting encrypts the device contents
DUnmounting speeds up device removal
Step-by-Step Solution
Solution:

  1. Step 1: Understand filesystem caching

    Linux caches writes to improve performance; unmounting flushes these caches to disk.

  2. Step 2: Consequences of not unmounting

    Disconnecting without unmounting risks data loss or filesystem corruption due to incomplete writes.

  3. Final Answer:

    Unmounting flushes cached data and prevents data loss -> Option A

  4. Quick Check:

    Unmount before disconnect to avoid data loss [OK]
Quick Trick: Always unmount before unplugging to save data [OK]
Common Mistakes:
  • Thinking unmount formats or encrypts device
  • Assuming unmount speeds removal physically
  • Ignoring data loss risks

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