grub installation issue 110

The one above is quite detailed.

The reason why grub appears when the computer is booted up is that the main boot is lost.

Enter the Zen cave calendar in the command line as follows: find--set-root bootmgr, chainloader bootmgr, boot enter to enter the win7 system.

An operating system (OS) is a computer program that manages the hardware and software resources of a computer. The operating system handles basic tasks such as managing and configuring memory, prioritizing the supply and demand of system resources, controlling input and output devices, operating the network, and managing the file system. The operating system also provides an interface for users to interact with the system.

Function. From the user's point of view, the operating system can schedule various resources of the computer system, including software and hardware equipment, data information, etc.

The use of computer operating system can reduce the intensity of manual resource allocation, reduce the user's intervention in computing, and greatly improve the intelligent work efficiency of the computer. Secondly, in terms of resource management, if multiple users jointly manage a computer system, then there may be conflicts and contradictions in the information sharing of the two users.

In order to more reasonably allocate the various resource plates of the computer and coordinate the various components of the computer system, it is necessary to give full play to the functions of the computer operating system, and make an optimal adjustment to the efficiency and degree of use of each resource plate, so that the needs of each user can be satisfied.

Finally, with the assistance of computer programs, the operating system can abstractly process the basic functions provided by the computing system resources, and show the functions of the operating system to users by visual means, so as to reduce the difficulty of using the computer.

The operating system mainly includes the following functions:

Process management, its work is mainly process scheduling, in the case of a single user and a single task, the processor is only exclusive to one task of one user, and the work of process management is very simple. However, in the case of multiple programs or multiple users, when organizing multiple jobs or tasks, it is necessary to solve the problems of scheduling, allocation, and optimization of the processor.

Storage management is divided into several functions: storage allocation, storage sharing, storage protection, and storage expansion.

Device management has the following functions: device allocation, device transmission control, and device independence.

File management: file storage space management, directory management, file operation management, and file protection.

Job management is responsible for handling any requirements submitted by users.

Some netizens reported that the computer booted up grub prompt, resulting in the computer can not start normally, this problem appears after reinstalling the system, because the main boot file is lost or damaged, how to solve the problem of the computer as soon as the computer is turned on grub? The following is a call to you to find a grub solution when the computer is turned on.

Here's how:

1. Enter the following **:

find --set-root bootmgr (press enter).

chainloader bootmgr (carriage return).

boot

However, this does not completely solve the problem, so that you will have to enter these ** when you boot up in the future, which is a bit troublesome.

2. Prepare a U disk, turn off the computer, plug in the U disk to start the computer, press F12 continuously (different brands of computers may enter in different ways), enter the driver options page and select the U disk with the PE system installed through the up and down buttons, and click confirm to enter the PE system.

3. After entering the PE system, select the DiskGenius partition tool in the PE tool, and click DiskGenius menu bar Hard Disk - Rebuild Master Boot Record.

4. Complete the operation step by step according to the prompts that appear in the system, and finally click "Yes";

5. Finally, unplug the USB flash drive and restart the computer.