D-8 Installing Windows Server 2003 x64 Editions12. When the installation has completed, remove Microsoft Windows Server 2003 R2 x64Edition DISC 2 CD-ROM from the DVD-ROM drive, and restart the system.After installation is completed, be sure to execute the tasks described in "DriverInstallation and Advanced Settings" and "Updating the System" of this manual.Reinstallation to Multiple Logical DrivesThis subsection describes the procedure for reinstalling the operation system if the multiple logicaldrives exist.Before Re-installing the Operation SystemBe sure to make backup copies before re-installing the operation system just in case.Re-installing the Operation System1. Start the clean installation following the procedure described in this manual.2. Specify the partition in which you want to install the operating system when the followingmessage appears:The following list shows the existing partitions andunpartitioned space on this computer.Use the UP and DOWN ARROW keys to select an item in the list.* Cannot modify the drive letter of your system or boot volume. Confirm the properdrive letter is assigned and then, continue the setup.3. Continue the clean installation again following the procedure described earlier in thischapter.The drive letter of the re-installed system may differ from the one of the previous system.If you need to modify the drive letter, modify it according to the "Procedure forModifying the Drive Letter".