Disk partitioning and solves the troubles caused by the reverse-order installation of the operating system.

Disk partitioning and solves the troubles caused by the reverse-order installation of the operating system.

Disk partitioning has always been a headache for the oldest computers that have been around for a long time! What are the primary partitions, what are the extended partitions, and logical partitions, partition tables, and boot records. Next I will talk about the relationships between primary partitions, logical partitions, and extended partitions:

 

First, let's clarify what these terms mean.

1.Primary Partition: Also known as "primary disk partition", it canContains boot files and data filesIs the partition type with the highest permissions. To start the operating system, findActive primary PartitionTo read the boot records and start the system based on the boot records.

2.Extended partition: It is at the same level as the primary partition and cannot be formatted. The partition table where the first sector of a disk is located can only record four data records. If no extended partition exists, a hard disk can only be divided into four partitions. WhilePurpose of extended partitionIt is to use additional sectors to Record Partition information.

3.Logical Partition: It isDerived from extended partitionsAn extended partition can have many logical partitions, which can only be used to store data.Cannot be used as a boot Partition(No boot file in the logical partition ).Extended partitions are used to record information about these logical partitions.

 

Note the following points:

1. A maximum of four primary and extended partitions can be created (Hard Disk restrictions)

2. There can be only one extended partition (Operating System Restrictions)

3. Extended partitions only store the partition information of subordinate partitions and cannot be formatted.

 

Some smart children may think about it. There is one primary partition (drive C) and three logical partitions (drive D \ E \ f) in one unit) after windows 10 is installed on Windows 10 on Windows 10 and Windows 10 and Windows 7 on disk D, will the disk automatically become the primary partition?

This is not the case. After windows 10 is installed, the D disk will not automatically become the primary partition. Isn't that because only the boot file can be placed on the primary partition? How can I start a boot file without the boot file win10? The truth is,During the installation process, win10 does not generate a boot file again. Instead, it adds a boot record about win10 startup to the boot file in the primary partition.The disk is modified.. So after the computer is started, a selection request will pop up to enter win10 or win7.

At this point, I can't help but think about it. If Windows 10 is not installed on this server, then if Windows 7 is directly installed on the D Drive, there is no win7 boot item. So what should I do? Before I install win7SetDSwitch disk to primary partition and activate this partition(In this caseThe purpose is not to allowThe win7 installer modifies the boot file of drive C, but directlyDisk creation guide File). Install Windows 7 to d in pe mode. After the instance is shut down and restarted, it enters Windows 7 (no options are selected for the operating system). After the instance is switched back to pe mode, it is activated for drive C. After the instance is shut down and restarted, it enters windows 10.

What is the actual situation? Please do it yourself. Thank you!