Active Partition – Windows 10Īlpha-based computers have no active partitions these are configured by the manufacturer-supplied configuration program. Only one partition on each hard drive can be set as an active partition or bootable partition. If not, then it’s time to look at alternatives like a clean install.What is an active partition? What’s the difference between active and primary partition? What is Active Partition?Īctive Partition is the partition that contains the boot files for the operating system you want to run, that is, the partition from which the computer starts up. Run the startup repair disc until startup repair does not report any errors. You can close the command prompt window and reboot. ‘Active’ status is important because Windows 7 looks for the ‘active’ partition for WinRE (Windows Recovery Environment needs to recognize the system volume). If the partition is not marked as Active (Active=Yes), then type ‘active’ at the prompt to mark it as active.
Next, type the commands below for information about the Windows 7 partition and to check whether or not it is marked as ‘Active’. Next, type the commands below for information about the disk. Type DISKPART at the command prompt to enter into this mode: ‘help’ will list the contents. If your Windows 7 installation is not listed, then you need to click on the “Command Prompt” and enter the following commands below: Once you have arrived at the window below, select “Command Prompt”. Load the Startup Repair disc and select “Next”. This will open the menu to choose which drive to boot from: select the DVD drive on your machine. Insert the Startup Repair disc in the drive and press the F8 (most machines) key during boot. In this case, you need to load the Startup Repair disc. Sometimes the partition in question is not recognized by the WinRE (Windows Recovery Environment) or you receive “missing operating system”, “Bootmgr is missing”, or something comparable. After all, I had the startup repair disc. Instead of editing Grub loader, I opted for the Windows approach. However, the Grub loader did not have the entries for Windows 7. I could see it was there when booting the ‘other partition’ Lucid Lynx. I spent some time running through tests and trying to figure out why the system would not recognize the volume. This left Windows 7 (2nd partition) unbootable. I removed the first partition and did not adjust the boot loader. Recently, I messed up the installation on my son’s machine.
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