On basic master boot record (MBR) disks, marks the system partition or boot partition with focus as inactive.
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 family of operating systems.
> If you are unable to start your computer after marking the system or boot partition as inactive, insert the Windows Setup CD in the CD-ROM drive, restart the computer, and then repair the partition using the fixmbr and fixboot commands in the Recovery Console.
- After you mark the system partition or boot partition as inactive, your computer starts from the next option specified in the BIOS, such as the CD-ROM drive or a Pre-Boot eXecution Environment (PXE).
- An active system or boot partition must be selected for this operation to succeed. Use the select partition command to select the active partition and shift the focus to it.
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