VirtualBox: Could not claim parallel portPosted: August 28, 2013
You try to run Oracle VirtualBox with a direct access to the parallel port at your Linux box, but it fails with the following error message:
Error: failed to start machine. Error message: Parallel#0 could not claim parallel port ‘/dev/parport0’Be sure that no other process or driver accesses this port (VERR_DEV_IO_ERROR).
Parallel device 0 cannot attach to host driver (VERR_DEV_IO_ERROR)
The main point: you have to unload the Linux kernel module lp, which is blocking access to the port, like this:
You might also either add your user to groups having file access permissions for the device or modifying the permissions to give access to more users.