What's happening is ESXi is now passing USB controller control over to the guest to control - as such ESXi loses write access to its own SD Card and files, Windows can see them - and sadly VSphere can no longer edit the settings because they're on a Linux partition Windows can't see, but which is under the control of Windows! Somehow I found out what was wrong last year, and it said : When I checked the contents, they were the ACTUAL HOST SD CARD FILES! ESXi's own files in fact! It failed in multiple ways, and multiple times, and at one point I'd lost USB 2 and 3.Įventually after tweaking the virtual PCI cards and host config - I got USB 2 working, but strangely I could see 5 or 6 'Disks' in Windows that were not there before. I use it for PLEX and video's - but the USB 2 was taking ages to index things, and copy them off, so I tried to get USB 3 drivers installed. Last year I tried getting ESXi USB 3 passthrough set up on my HP Microserver G8.ĮSXi boots from a little SD Card on the server MoBo, and I've got a couple of Windows machines running on it.

Esxi usb 3 card