![]() ![]() Let’s see how to assign drive letter manually. All primary partitions will be imaged first while logical drives are assigned according to subsequent letters. When the system is booted, operating system on active partition will perform drive image in order to assign drive letters to primary partitions and logical partitions. Partition C: in Windows systems is usually set as active partition by default while active partition in Linux is set according to specific setting. And the startup files of operating system are installed in this partition. 2.The Methods for Setting Partition as Active or InactiveĪctive partition is computer boot partition.1.The Definition of Hard Disk Active Partition.What's more, this article also states the detailed steps to set one partition active. As for the detailed steps, please refer to this post: How to Set Active/Inactive.What is active partition? This article will answer the question. Step 3: Set the system reserved partition active using MiniTool Partition. As for the detailed steps, you can refer to this post: How to Access Asus Boot Menu to Make Asus Boot from USB? Then the PC will boot from the bootable media. Step 2: Connect the bootable media to the unbootable PC and boot into BIOS to change boot order. As for the detailed steps, you can refer to this post: How Can I Create a Partition Magic Boot CD? Step 1: Use MiniTool Partition Wizard to make a bootable media on a normally running PC. Some software like MiniTool Partition Wizard allows you to activate partitions. select partition # (# is the number of the system reserved partition and you should replace it accordingly).select disk * (* is the number of the system disk and you should replace it accordingly).Then, you can use the following commands to make the boot disk active again. If you can’t boot into Windows, you can enter WinPE or WinRE and then go to Troubleshoot > Advanced options > Command Prompt. ![]() In this case, you can use the following ways the make the boot disk active again. Sometimes, if the system reserved partition (or the C drive if it contains those booting files) becomes inactive, the system won’t boot up again. In general, it’s better that one hard drive has only one active partition. In these cases, those booting files will be stored in C drive and the C drive will be the active drive. Use diskpart.exe to partition and format the hard disk during the new installation.Use other tools (such as gdisk.exe) to partition and format the hard disk before the new installation.Your computer boots the unencrypted System Reserved partition, and then decrypts the main encrypted drive and starts the encrypted Windows system.īut you may have no system reserved system if you are in the following cases: The startup files used for BitLocker Drive Encryption: The System Reserved partition is essential if you want to use BitLocker drive encryption, which can’t function otherwise.The Boot Manager and Boot Configuration Data (BCD): When your computer starts, the Windows Boot Manager will read BCD and then the bootloader will start Windows from the system drive (C drive).Then, what does the system reserved partition do? Actually, it is used to store the following two files: ![]() In Windows Disk Management, they are shown like the following picture:Īs you can see in the above picture, the C drive is the boot partition and it contains page file and crash dump the system reserved partition is the active system partition but it has no drive letter. The most important two partitions are system reserved partition and C drive. On the boot disk, there are many partitions. In computer, the hard drive that has operating system installed is called boot disk. Note: In this post, I will not introduce the software Boot Disk, but the active boot partition in Windows system. ![]()
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