On 02/22/2012 07:58 AM, Dave Close wrote: > I have no previous experience with VirtualBox but have been trying to > use it for the last couple of weeks. Now I'm having what ought to be > a simple problem, but I'm stuck. I can't get a VBox guest to see a > connected USB flash drive. > > Host: Fedora 16 > Guest: Fedora 8 > VirtualBox: 4.1.8 with (the only) extension > > Host uses a USB keyboard and mouse which are attached normally > during boot and are visible and useable by both the host and the > guest. However, I'm usually running the guest headless. A VBox blank > USB "filter" is installed. When connecting a flash drive, the host > immediately reports detection but the guest does not see anything. These > are the only USB devices anticipated. Host /var/log/messages extract: > > Feb 18 20:37:04 sunvale kernel: [ 208.186078] usb 1-5: new high-speed USB device number 4 using > ehci_hcd > Feb 18 20:37:04 sunvale kernel: [ 208.304139] usb 1-5: New USB device found, id Vendor=0dd8, id > Product=c100 > Feb 18 20:37:04 sunvale kernel: [ 208.304148] usb 1-5: New USB device strings: Mfr=2, Product=1, > SerialNumber=3 > Feb 18 20:37:04 sunvale kernel: [ 208.304156] usb 1-5: Product: USB Flash Disk > Feb 18 20:37:04 sunvale kernel: [ 208.304162] usb 1-5: Manufacturer: Netac > Feb 18 20:37:04 sunvale kernel: [ 208.304167] usb 1-5: SerialNumber: 4880787365A536E3 > Feb 18 20:37:04 sunvale kernel: [ 208.304980] scsi5 : usb-storage 1-5:1.0 > Feb 18 20:37:04 sunvale mtp-probe: checking bus 1, device 4: > "/sys/devices/pci0000:00/0000:00:12.2/usb1/1-5" > Feb 18 20:37:04 sunvale mtp-probe: bus: 1, device: 4 was not an MTP device > Feb 18 20:37:05 sunvale kernel: [ 209.308678] scsi 5:0:0:0: Direct-Access Netac OnlyDisk > 1.00 PQ: 0 ANSI: 2 > Feb 18 20:37:05 sunvale kernel: [ 209.311032] sd 5:0:0:0: Attached scsi generic sg6 type 0 > Feb 18 20:37:05 sunvale kernel: [ 209.649594] sd 5:0:0:0: [sdf] Assuming drive cache: write through > Feb 18 20:37:05 sunvale kernel: [ 209.649602] sd 5:0:0:0: [sdf] Attached SCSI removable disk > > There are no new lines added to /var/log/messages on the guest. (Yes, > the flash drive referenced here is ancient. It is just a test device.) > Further information: > > # VBoxManage list usbhost > Host USB Devices: > ... > UUID: c85d93b6-59a0-43b2-a347-e4f2d52dd924 > VendorId: 0x0dd8 (0DD8) > ProductId: 0xc100 (C100) > Revision: 1.0 (0100) > Manufacturer: Netac > Product: USB Flash Disk > SerialNumber: 4880787365A536E3 > Address: sysfs:/sys/devices/pci0000:00/0000:00:12.2/usb1/1-5//device:/dev/vboxusb/001/0 > 04 > Current State: Busy > > The VBox manual seems to say that USB pass-through will not work if > the USB device is actively used by the host. I presume this attachment > constitutes active use, especially since it is reported as busy, but > the drive is not mounted. (I have explicitly disabled auto-mount.) What > do I need to do to let this device (and any other USB flash drives > inserted) be seen by the guest? > > Searching online finds only references to using auto-mount on the > host, then sharing the mount directory with the guest. That is not > an ideal solution in this case as software on the guest expects to > mount the drive and would need to be extensively modified. Besides, > I hate auto-mount. > > The issue is the flash drive. What can't the guest see it? Hi Dave, If you are using VirtualBox-OSE from rpmfusion, there is no USB support. If you need USB support, you must install VirtualBox *and* the VirtualBox Extension pack, both from VirtualBox.org. Kind regards -- Joachim Backes <joachim.backes@xxxxxxxxxxxxxx> http://www.rhrk.uni-kl.de/~backes
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