What's it doing when I plug in external disk?

Discussion in 'MacBook Pro' started by donawalt, Apr 24, 2018.

  1. donawalt macrumors regular

    donawalt

    Joined:
    Sep 10, 2015
    #1
    I am curious - whenever I replug in my external backup disk to my MBP 2017, the disk churns for awhile, maybe 10 minutes I think - it's doing something. I checked, and no backup is going - last backup was 30 minutes ago. I did a proper eject of the drive when I unplugged the cable to take my laptop somewhere on its own....is it doing some sort of integrity check every time it's plugged in/connected? Nothing is wrong, I am just wondering...thanks!
     
  2. jerryk macrumors 601

    Joined:
    Nov 3, 2011
    Location:
    SF Bay Area
    #2
    If you mean a rotational disk it is likely spinning up and being mounted into the file system. If you do not access the drive, it may spin down and go silent.
     
  3. donawalt thread starter macrumors regular

    donawalt

    Joined:
    Sep 10, 2015
    #3
    I don't think it could be just spinning up, I have heard this before - it sounds just like a backup, very busy - like its doing an integrity check or something. I was a solid 15 minutes...
     
  4. Stygma macrumors member

    Stygma

    Joined:
    Jan 24, 2018

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