I have vm ware esx server 3.5 and I am using acronis universal restore to back with creating .tib files. So I know that esx 3.5 has problems with usb drives so I am mapping to the usb drive once I share it out. The problem which I am totally lost on is that when I pick up the usb drive while trying to make a backup or restore, it asks me for username and password. I have it shared out with the correct permissions but when I try to get into the usb hard drive it won't let me authenticate. I have looked and found no answers. I have tried my local admin and domain credentials but still won't let me in the drive. Need help or is there no solution. I cannot believe something like VM ESX 3.5 won't work with external usbs!!!!!!