I should have said that in Startup and Recovery (Control Panel/System) there is only one option in the dropdown OS box which corresponds to the Boot.ini.
On booting up, I get a choice of
Windows 2000 Professional (Setup) or
Windows 2000 Professional
If I do not make a selection, the first option is selected automatically and causes an error. (The first option started to appear after I tried to install Win 2000 on a new, second hard disk from the Win 2000 CD. It began to reinstall on C so I aborted as all the updates have been installed)
I have checked the forum and it seems boot.ini needs to be edited. However, the (setup)option is not in my boot.ini which is as follows:
Default=C:\$WIN_NT$.~BT\BOOTSECT.DAT="Microsoft Windows 2000 Professional"
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows 2000 Professional" /fastdetect
This means I cannot do an unattended bootup.
Any help appreciated.