I had Fedora 23 running on a laptop.
After getting it all tuned up, I built another partition, booted from it, and did a backup of the custom partition.
I later went to make another partition and I missed the note about "automatic repartioning", so I lost everything.
I rebuilt it, and then loaded a new partition from the tar.
The thing is, I can't log in - because it says that csh/tcsh are not executable. I sign on with my user/passw and after a second it kicks out. If I type in the wrong user/pass it immediately says so. Same thing with telnet. Same thing with root/tonyp.
Even if I boot it to single user I can't log in. When I try it goes into multiuser mode.
I've booted the other partition and looked at the custom file system and it looks good. I can even do /custom/usr/bin/csh and /custom/usr/bin/tcsh and they work fine..
Any ideas before I climb into the attic and get the DVD to try a recovery?