External Hard Drive Speeds

Discussion in 'macOS' started by coastertux, Feb 21, 2008.

  1. coastertux macrumors regular

    Jul 17, 2006
    I have a USB2 external hard drive and it takes much longer to copy files to it than copy files back to my internal hard drive (like 2 hours on, 20 minutes off). Is this normal?
  2. tuxtpenguin macrumors regular

    May 19, 2007
    While there is a slight difference in read vs write speeds, I haven't noticed anything that far off.
  3. hodgjy macrumors 6502

    Apr 15, 2005
    It depends on the drive inside, but a general rule of thumb is that drives are usually a little bit slower at writing than reading. Throw that on top of USB not being a constant throughput, it's not out of the question. However, something seems off on your system.
  4. coastertux thread starter macrumors regular

    Jul 17, 2006
    Since "something seems off" what can I do to fix it?
  5. abisai macrumors newbie

    Feb 4, 2008
    Check the System Profiler to see if its running at USB2 speed instead of USB1. If its running at USB1 speed plug it into a different USB port. I had to juggle the connections on my Mac Pro due to a similar problem.

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