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unable to partition my external hard drive

Discussion in 'All Other Software' started by talktomaze, Jan 26, 2019.

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  1. talktomaze

    talktomaze Thread Starter

    Jan 26, 2019
    • I have a 1TB USB drive with a single, simple, primary partition spanning the whole disk.
      I want to shrink and create a second partition. I tried to Shrink Volume in Disk Management. The wizard reported 450 gb available to shrink. I tried to shrink by just 200GB. No matter what shrink size I select it churns for an hour or two and finally reports:
      There is not enough space available on the disk(s) to complete this operation. I run Windows 1o os.
      How can I get this to work?
  2. DaveA

    DaveA Trusted Advisor Spam Fighter

    Nov 16, 1999
    First Name:
    How full is the drive?
  3. lunarlander


    Sep 21, 2007
    Assuming you have Win 10.

    Right click command prompt and run as administrator. Run defrag <yourUSBdriveLetter> /X . This should move all your data on that drive closer together so you have space to shrink.
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