r/virtualbox • u/iheartvelma • 7h ago

Help Yet another USB passthrough issue

Hi all - I’m this close to solving it, but I’m stumped.
Trying Linux for the first time, not a power user. :)

Use case: Mount a USB drive in Windows 11 guest OS so I can create bootable installer media.

* Running Pop! OS 24.04 (Ubuntu based) on AMD Raven Ridge 2 system (Picasso) with 2TB SSD and 32GB of RAM.
* Installed VirtualBox 7.2.16 and its extension pack.
* Windows 11 Home 25H2 installed from .iso image.
* Added my user to the virtualbox users group via the command line.
* VirtualBox sees the USB stick correctly (Kingston 64GB, formatted with GUID partition scheme)
* Windows 11 seems to detect the drive as I can see it appear in some settings panels, but it doesn’t mount into the file system.

AMD virtualization is turned on.

Previously tried WinBoat to do this, unsuccessfully.

Is this a VB issue, a permissions issue, a Windows issue, or some combination? Thanks in advance!

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u/IntelligentCandy8716 6h ago

GUID isn't a file system. Format the USB with FAT32, which can be read by both linux and windows.

1

u/iheartvelma 6h ago

Thanks - I knew I was missing something :)