Have you ever troubled by mistaken manipulations when operating Windows Disk Management snap-in? Sometimes, it will make you suffer a lot? For example, I accidentally changed the active partition with Windows Server 2003 Disk Management tool when I was managing computer partitions. Then, I find that the computer fails to boot and I receive the following error message: “NTLDR is missing” and “Press Ctrl + Alt + Del to restart”. It is quite difficult for me to figure out the exact reason? What can I do to unmark an active partition?
Providing that the partition marked as active does not contain Windows boot files or the boot files for another operating system, users may come across system boot failure or get error information due to the very precondition of using Intel-based computers: the system partition must be a primary partition that has been marked as active for startup proposes. Moreover, the partition must be situated in the disk that the computer gains access to at startup, and only one active system partition is allowed to be marked at a time. Marking corresponding system partition as active before restarting the computer is the precondition of using another operating system.
Though Windows Server 2003 Disk Management tool and “Diskpart” command line provide partition management functions, they are unavailable when operating system fails to boot. Under such circumstance, how to set system partition to active becomes a leading concern. Actually, a piece of excellent bootable server partition manager can do the trick perfectly, and a piece of bootable MiniTool Partition Wizard Server Edition is extremely helpful. Here, we would show users how to deactivate a partition under Windows Server 2003 Virtual VMware.
1. The picture above is the startup interface of computer failing to successfully boot from local drive. After launching the Virtual VMware, users are supposed to click the back triangle under “Power This Virtual Machine” tab on the upper left corner and then click “Power On to BIOS.”
2. In this interface, choose “Boot” option and then choose “CD-ROM Drive“(here, users can choose according to actual situation. If the boot files are burnt to removable devices such as USB drive, users can choose the “Removable Devices” option. It applies to the other two options). Then, click “F10” and “Yes” to continue.
3. After those operations, users will get the picture above. As operating system fails to boot from local drive (system partition is deactivated), users are recommended to choose the first one to continue:
4. In this interface, choose “1” which is set by default to get the main interface of server partition management software shown below:
5. In the main interface of MiniTool Partition Wizard Server Edition, choose the system partition from disk mapping area (here, the partition sized to 39.99 GB is the target partition) and then click “Set Active” from left action panel.
6. At this time, click “Apply” button in the upper left corner to make final confirmation. When the software performs all those operations, users can exit the software and try to reboot the operating system from local drive, for it has been repaired. After entering the system, users will find that the partition which was set as active by mistake is in primary, while the system partition: C drive now becomes active.
The detailed prompts to deactivate an active partition with the powerful MiniTool Partition Wizard Boot Disc are demonstrated as above. If users also need to fix system boot failure after wrongly changed the active partition, they can try the powerful software via the quick link here.