How to create a new VM with a disk smaller than 64 GB

Discussion in 'Installation and Configuration of Parallels Desktop' started by PaulH57, Sep 9, 2025 at 8:42 AM.

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  1. PaulH57

    PaulH57

    Messages:
    1
    Greetings. I do not see any way to say that I want to create a VM whose hard drive won't get larger than, say, 16 GB. I start with "New", I pick an ISO, I specify that I want to configure from the settings before creation, I choose the hard drive and Advanced, I choose Properties, I move the slider to 16 GB, but the "Apply" button is inactive, so I can only close.
    Any pointers would be apprecaited!
     
    PaulH57, Sep 9, 2025 at 8:42 AM
    #1
  2. Ashley Chumun

    Ashley Chumun Staff Member

    Messages:
    209
    Hellog @PaulH57
    Thank you for your feedback.
    This is a known issue impacting Parallels Desktop 26 and the case is already being investigated by our Development Team.
    As a workaround, please follow the steps below:
    1. Downgrade to Parallels Desktop 20.4.1 as a workaround via the link https://download.parallels.com/desktop/v20/20.4.1-55996/ParallelsDesktop-20.4.1-55996.dmg to install your Virtual Machine with custom size.
    NOTE: You will be prompted to upgrade to the latest version of Parallels Desktop during the installation, simply close the Window and select "Use current".
    2. After creation of your virtual machine with customer hard disk size, you can upgrade back to Parallels Desktop 26.
    Moreover, we would advise subscribing to the article https://kb.parallels.com/en/131014 by clicking on the "get updates" button so that you are notified when the fix is out.
    Thank you!
     
    Ashley Chumun, Sep 10, 2025 at 5:14 AM
    #2

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