I'm sorry I don't currently have a VM with OVMF bios (in test, non-production scenario) that I can currently reboot to test. But I'm almost sure that in the past I have managed to enter a BIOS/BOOT/SELECTION section of the OVMF bios. If I have a chance I'll try & spin something up to test.
Do you have any screenshots of the BIOS/settings you are able to see?
So I spun up a Linux Mint VM on OVMF/UEFI bios - added a Gparted CD Rom image to it. And I'm able to enter the bios settings & boot from whatever.
It would be surprising that you see the USB disk in Windows Disk Management, but not in the BIOS. Maybe some Secure Boot constraint?
EDIT: I also further added a SystemRescue Cd rom, which I know has problems booting in some UEFI scenarios - and yes I couldn't boot from it - but it still showed up in the BIOS.
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I wish i could add a Pendrive in the GUI.
This would be a great feature.
I use snapshots alot.
This would be a really easy way to save logs, scripts or other data.
Regards Int3g3r
This would be a great feature.
I use snapshots alot.
This would be a really easy way to save logs, scripts or other data.
Regards Int3g3r
Lovely & useful idea. Would use it endlessly. Should be implemented with no backup enabled for VM. Should also be "hot swappable" & "insertable" on any VM (not at the same time). Coming to think of it - it shouldn't have any VMID configuration attached to it.
I go on & on asking for everything ......
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I followed the tutorial and was able to burn the virtual USB perfectly. Thank you @PanWaclaw !
However, I notice the speed of the interface is terribly low. I checked over VM -> Monitor, the "info usb" and shows me using ubs 1.1:
Does anyone know how can I change it at least to USB 2.0?
Thank you,
However, I notice the speed of the interface is terribly low. I checked over VM -> Monitor, the "info usb" and shows me using ubs 1.1:
Code:
Type 'help' for help.
# info usb
Device 0.1, Port 1, Speed 12 Mb/s, Product QEMU USB Tablet, ID: tablet
Device 0.2, Port 2, Speed 12 Mb/s, Product QEMU USB Hub
Device 0.3, Port 2.1, Speed 12 Mb/s, Product QEMU USB MSD, ID: drive-usb0Does anyone know how can I change it at least to USB 2.0?
Thank you,
I believe your going to need to add a
device usb-xhci, and then add device usb-storage to the bus as bus=xhci.0As per docs.
Note: I've never personally done this or used any virtual USB flash stick, only attempting to help.
Thanks @gfngfn256 for suggestion but struggling to get correct parameters / commands. VM don't start bc unable to find out this bus=xhci.0 
I mitigated it adding usb0 as SPICE (don't know why) but only to 100Mb... it is really paintful process if can not get USB2.0 or even better USB3.1 to move data around
I mitigated it adding usb0 as SPICE (don't know why) but only to 100Mb... it is really paintful process if can not get USB2.0 or even better USB3.1 to move data around
Again I've never done this, but how about (based on @PanWaclaw advice in first post):
1. Create Flash Drive image:
Bash:
dd bs=1G count=8 if=/dev/zero of=/tmp/usb0.img2. Add a drive device for our flash drive [VM --> Monitor]:
Code:
drive_add 0 file=/tmp/usb0.img,if=none,id=drive-usb0,format=raw,cache=none3. Add a USB xhci bus [VM --> Monitor]:
Code:
device_add nec-usb-xhci,id=xhci4. Install our flash drive in the slot on the xhci bus [VM --> Monitor]:
Code:
device_add usb-storage,bus=xhci.0,drive=drive-usb0,removable=onI'd really be interested to know, if this works.
EDIT: For my own reference (based on test case of user in coming posts) - changed step 4 from:
Code:
device_add usb-storage,bus=xhci.0,id=drive-usb0,drive=drive-usb0,removable=on
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Everything works well but step 4. I get the following error:
Code:
# device_add usb-storage,bus=xhci.0,id=drive-usb0,drive=drive-usb0,removable=on
Error: Property 'usb-storage.drive' can't find value 'drive-usb0'However, if I run this similar command without "bus=xhci.0" it works
Code:
device_add usb-storage,id=drive-usb0,drive=drive-usb0,removable=onThanks,
Have you checked speeds with this.
How about you replace command number 4, with:
Code:
device_add usb-storage,bus=xhci.0,drive=drive-usb0,removable=on@gfngfn256 thank you! it worked! and also figure out way bc q35 machines have slightly difference (always enabling USB3.0 performance).
Let me summarize:
With Q35 machines, I can create personalized windows 11 images using rufus and load it without need of having physical USB.
Thank you!
Let me summarize:
- SeaBIOS machines (I can do it over VM>Monitor, requires VM running)
Code:
drive_add 0 file=/tmp/usb0.img,if=none,id=drive-usb0,format=raw,cache=none
device_add nec-usb-xhci,id=xhci
device_add usb-storage,bus=xhci.0,drive=drive-usb0,removable=on- Q35 machines which support UEFI (got it working only using args)
Code:
args: -drive file=/tmp/usb0.img,if=none,id=drive-usb0,format=raw,cache=none -device pcie-root-port,id=root,slot=0 -device nec-usb-xhci,id=xhci -device usb-storage,bus=xhci.0,drive=drive-usb0,removable=onWith Q35 machines, I can create personalized windows 11 images using rufus and load it without need of having physical USB.
Thank you!
I've don't use Unraid - but I remember reading many posts of people attempting what you describe (I believe unsuccessfully!).
What I would try If I were you; in step 2 of my above post try adding the serial number, so that would be:
Code:
drive_add 0 file=/tmp/usb0.img,if=none,id=drive-usb0,format=raw,cache=none,serial=12345....
# replacing 12345.... with your actual USB serialI'm not too sure about this one, so if the above doesn't work, maybe try it in step 4 of above post (& remove it from step 2), so that would be:
Code:
device_add usb-storage,bus=xhci.0,drive=drive-usb0,removable=on,serial=12345....
# replacing 12345.... with your actual USB serialGood luck & report back.
As I said before, I don't actually use a Virtual USB drive, so I'm only working from theory.
Searching the web I couldn't find a solution to your problem, (& I found that the
qemu drive-serial option has been deprecated some time ago), but maybe we can try the following - which may or may not work.I assume from that - you did find a GUID - but not the correct one - so qemu is in fact creating the GUID. Maybe you can share with me what type of GUID it is creating? Can you find any reference of the supplied serial we added (non GUID) in the VM?
Maybe try adding (unlikely to work, I'm trying!)
guid=12345..... (or maybe GUID=12345....) to one of the options above?I'm thinking (although unlikely) that maybe the xhci bus in fact creates the GUID, so lets try:
Code:
device_add nec-usb-xhci,id=xhci,serial=12345....
# replacing 12345.... with your actual USB serialI tried and it didn't work
I'm also looking for a way to make a virtual usb stick with a GUIDThe last 2 blocks of the serial are correct on windows - aaaa-bbbb-cccc-dddddddddddd - c and d are correct, a and b shows wrong on windows
edit: aaaa-bbbb is 46f4-0001, its the default vid and pid from qemu virtualization. Can I change it?
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As I pointed out above, I don't actually use a Virtual USB, & all the posts above from myself were based on theory & not practice.
However about a month ago, I decided to test the above with the intent of trying to get the serial correctly passed to the VM. I only tried with Linux VMs but had zero success. It seems you have already improved on that by getting the serial (partly) passed to a Windows VM. It interests me to know on which line you added the serial to accomplish this.
BTW, this thread is good news for Lime Technology, Inc. !
I added the serial part on device_add
I spent the day trying to solve this and did it
First install https://github.com/RushOnline/dummy-hcd dummy_hcd kernel module on proxmox host
Then create the virtual usb stick https://unix.stackexchange.com/questions/338026/centos-how-to-emulate-a-usb-flashdrive
Then I just passed via GUI to the VM I wanted
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