Run Partition Expert, Right-click on one partition to Set ActiveĢ. right-click on the partition you want to set active, choose Mark partition as active, Set Active Partition in Partition Expertġ. Press shortcut key WIN+R to open RUN box, type diskmgmt.msc, or you can just right-click on Start bottom and select Disk Management in Windows 10 and Windows Server 2008Ģ. Set active partition in Disk management is another way to make partition bootable, Server 2008, Windows 10, and other Windows Systems can share steps as follow to set active partition:ġ. Now you set this partition active, when you reboot, you can switch to another Windows system. diskpart will list all the disks you have installed, type select disk # press WIN+R to open RUN box, type diskpartģ. Steps to set active partition in command line with diskpartġ. Boot loader: Find Operating System boot files.Boot sector: created by the operating system, located at the beginning of the active partition.Primary partition: OS can only runs in Primary Partitions.Active partition: active partition must be primary partition.