Inactive
DiskPart
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Syntax: inactive
On basic master boot record (MBR) disks, marks the system partition or boot partition with focus as inactive. The computer starts from the next option specified in the BIOS such as the CD-ROM drive or a Pre-Boot eXecution Environment (PXE)-based boot environment (such as Remote Installation Services (RIS)) when you restart the computer.
Caution
Your computer might not start without an active partition. Do not mark a system or boot partition as inactive unless you are an experienced user with a thorough understanding of the Windows Server 2003 family.
If you are unable to start your computer after marking the system or boot partition as inactive, insert the Setup CD in the CD-ROM drive, restart the computer, and then repair the partition by using the Fixmbr and Fixboot commands in the Recovery Console.