Or "Where the **** has it gone"
Today's school visit to run an upgrade ended well but had begun inauspiciously.
Firstly "digital signature failure" caused the download and install to fail. This is because security settings in Internet Explorer are set too high.
The tech couldn't set them lower so we tried with cd. Popped the first one in the drive. Check it had come ready. No.
Open drive. NO CD!!
It had not seated properly and the closing drawer had pushed it between the drive and the bay wall. Nothing would move it.
So we reverted to downloading the files from Capita, and mounting the drive with Daemon Tools Lite. Superb and job done.