After creating a virtual machine I am trying to add a Raw File device to the VM. However, when using the Add Device UI and specifying a path to create the file I get the error “Path must exist when “exists” is set.” However, there isn’t any field in the UI called “exists” and the “info” popup says “…

I believe the TrueNAS ui will only allow you to add zvols as disk devices. You could write the raw file to a zvol using dd

[image] Stux: I believe the TrueNAS ui will only allow you to add zvols as disk devices. Pretty sure this is what the person meant: [image] Edit: I’m necroposting because I’m having the same issue. See MacOS as a VM on TrueNAS - #62 by NicholasFlamy

My workaround: MacOS as a VM on TrueNAS - #66 by NicholasFlamy

Can't add a new Raw File device to a virtual machine

Apps and Virtualization

NicholasFlamy September 20, 2025, 8:59pm 3

Pretty sure this is what the person meant:

Edit:
I’m necroposting because I’m having the same issue. See MacOS as a VM on TrueNAS - #62 by NicholasFlamy

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Can't add a new Raw File device to a virtual machine

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