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When you install Windows Millennium Edition on a Windows 2000-based computer, the Windows 2000 boot menu may not appear. To enable a dual-boot configuration, repair the Windows 2000 installation. To do this, follow these steps:
Start Windows 2000 Setup.
On the Welcome to Setup page, press R.
On the Windows 2000 Repair Options page, press R.
When you are prompted to Select one of the following repair options , press M.
Press the UP ARROW twice to select Verify Windows 2000 system files , and then press ENTER to clear the selection.
Press the DOWN ARROW to select Continue (perform selected tasks) , and then press ENTER.
The following message appears:
You need an Emergency Repair disk for the Windows 2000
installation you want to repair.
With an Emergency Repair Disk
If you have an Emergency Repair Disk, press ENTER.
Insert the Emergency Repair Disk into drive A, and then press ENTER.
Follow the instructions to repair the installation, and then restart the computer.
Without an Emergency Repair Disk
If you do not have an Emergency Repair Disk, press L. A message similar to the following should appear:
Setup has found Windows 2000 in the following folder:
drive :\WINNT "Microsoft Windows 2000 Professional"
Press ENTER.
Setup examines the disks and completes repairs.