Using VirtualBox USB serial port

Issues related to hardware problems
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FrankNatoli
Posts: 3
Joined: 2021/05/14 14:04:25

Using VirtualBox USB serial port

Post by FrankNatoli » 2021/08/07 18:21:17

Have a 64 bit Windows 10 system, running VirtualBox, hosting Centos8.
Have FTDI USB quad serial device that Windows recognizes as COM5 through COM8.
Centos8 shows no corresponding /dev/tty* devices.
dmesg | grep -i FTDI has no matches.
dmesg | grep -i serial shows:

Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: SerialNumber: 0000:00:06.0
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial support registered for generic

Since there is no other serial 4 port device on Windows, I suspect this is the FTDI device, but I can't access it through /dev/tty.
How can I access the FTDI device on Centos8 hosted on VirtualBox?

chemal
Posts: 776
Joined: 2013/12/08 19:44:49

Re: Using VirtualBox USB serial port

Post by chemal » 2021/08/09 17:49:41

FrankNatoli wrote:
2021/08/07 18:21:17
Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
...
That's something else.

A physical device can only be controlled by one OS. If you want to use a USB device in the guest, you have to take it away from the host and hand it over to the guest. There is a USB icon in the status bar of the VirtualBox window to do this.

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