I ran into this recently this problem as well with the following error(s) from TFTP boot,
[QUOTE][I][SIZE=12px]/images/dev on /images failed: bad file descriptor[/SIZE][/I][/QUOTE] and
[QUOTE][I][SIZE=12px]fatal error: failed to mount nfs volume[/SIZE][/I][/QUOTE]
The difference in my case was that where the OP had encountered
[QUOTE][I][SIZE=12px]/images/dev/ failed, reason given by server: permission denied[/SIZE][/I][/QUOTE], I had encountered
[QUOTE][I][SIZE=12px]/images/dev/ failed, reason given by server: no such file or directory[/SIZE][/I][/QUOTE].
Why did I run into this? Well, it’s because I was running FOG off of an old converted XP box with limited hard drive space. I had planned the whole platform to a newer box but, well, we know how 'I was planning on getting to it" works. In any event, I had run out of storage space and had moved some of the images off of the current FOG platform’s HDD to an external storage device. In the process, I inadvertently moved the [I]/images/dev[/I] directory. This was the root of the issue.
TL;DR version:
Check to make sure you didn’t delete/move your [I]/images/dev directory[/I]