I have many ISO files for geust OS installation that have been tested and used many times over.
I have a new vSphere 5.1 installation with no local DVDROM so I have uploaded some ISO's to the local datastore.
The guest VMs can boot to those ISO files but OS installation fails, with different errors from each different OS.
Windows 7 installation fails because the drivers for the CDROM aren't available.
I have reverified the files as well as reuploaded them to the datastore a couple times with the same results.
I have mounted the Windows 7 ISO file on my local machine and then used connect to client device to that mounted ISO and installation from it works, so after dismounting the ISO locally I uploaded once more and tried installing another VM from it with the same results.
Any thoughts or suggestions would be great.