System boot UEFI boot, win next mount EFI partition tutorial

Source: Internet
Author: User

Start by knowing a few things:

1. MBR partition table: Master boot record, which is the hard disk master boot Record partition table, supports only hard drives with capacity below 2.1TB. Drives exceeding 2.1TB can only manage 2.1TB, up to 4 primary partitions or three primary partitions and one extended partition, with multiple logical partitions under the extended partition.

2. GPT partition table: GPT, globally unique identity partition table (GUID Partition table), GPT has no limit on the number of partitions compared to the MBR maximum of 4 partition table entries, but Windows Max supports only 128 GPT partitions. GPT managed hard drive size up to 18EB. GPT partition boot boot is supported only on UEFI platform-based motherboards.

3. ESP Partition: EFI system partition, which is used in a computer system with an EFI BIOS to start the operating system. The boot manager, drivers, system maintenance tools, etc. are stored in the partition. If your computer uses an EFI system, or if the current disk is used to start the operating system on the EFI platform, you should recommend the ESP partition.

4. MSR Partition: The Microsoft Reserved Partition, which is used to reserve space on a GPT disk for alternate partitions, such as the need to use these partition spaces when converting a disk to a dynamic disk.

5. Secure boot feature: A new security feature has been added to Windows 8, and secure boot is built into the UEFI BIOS to combat malware infected with the MBR, BIOS, Windows 8 defaults to secure boot, during the boot process, Any modules to be loaded must be signed (mandatory), the UEFI firmware will be validated, unsigned, or cannot be verified and will not be loaded.

When tossing black apples, it is often necessary to hang the EFI partition in the Windows environment because it is often necessary to manipulate the boot partition and modify the Clover configuration. The next step is how to mount the partitions directly without using third-party software.

Press the shortcut key Win + X, select command Prompt (Administrator) in the lower left corner of the menu that pops up, and then enter the following instructions separately:

Diskpartsel disk 0list Partsel Part X (x is the EFI Division area Code) assign Letter=x (x is the assigned drive letter)

Describe the functions of several commonly used commands:

DiskPart                    //Run DiskPart tool list disk                    //list all disks sel disk 0                //Selected Disk 0list part                   //Enumerate all partitions (find the EFI partition in all partitions, type " System ") SEL Part 1/                /In my case, my partition 1 is the EFI partition, select partition 1assign letter=x        //mount the upper selected partition, drive letter X

Next open the Explorer and you can see that the EFI partition has been assigned a drive letter and is lying there.

But there is another problem: direct click in no permissions:


Next again, press the shortcut key Win + X, in the lower left corner of the menu that pops up, select command Prompt (Admin) and type:


That is, you can open Notepad with administrator privileges, then select the file-open the Explorer window to open Administrator rights ~ Remember to select the lower right corner of the filter for all files !

System boot UEFI boot, win next mount EFI partition tutorial

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.