USB key mounting issue in 4.3

Hi everyone,

I recently installed Qubes 4.3 and am having trouble with USB key mounting. Previously, the process was straightforward: plug in the key, open the File Manager in sys-usb, click on it, and it would work. Now, there’s a “removable” icon that requires root access and an fstab entry, which I don’t understand.

Goal: I’d like to mount my USB key from sys-usb with a single click, just like before. How can I achieve this?

It’s a known, “by design”, behavior in R4.3 .
See here.

The safe workflow is usually not to mount it inside sys-usb. Treat sys-usb as the USB controller qube, then attach the block device to the qube that should read it from the Devices widget. After that, mount it in that target qube’s file manager.

If you want to check what Qubes sees before clicking around, in dom0 you can list it with qvm-block. The important detail is to attach the device, not the whole USB controller, and to detach it again when finished. That is a little less one-click than old file-manager mounting, but it keeps the USB qube separated from the data-handling qube.

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