What is the difference between Local disk C-D-E ?

This question may have occurred to you that What is the difference between Local disk C-D-E ?

generally there is no difference. but lets start with this question:

What is Partition?

Many drives have a pre-configured partition; But all storage devices are free as an unallocated space when they have no partitions. To set up a file system and store any file in a drive, it must be partitioned.

This partition can contain all or only part of the storage space on the drive. You must first create at least one separate section with a file system. This separate partition is called a partition. You can have a partition that contains all the storage space on the drive or you can divide the available space into 20 different partitions. In both cases there must be at least one partition on the drive.

After creating a partition, that partition is formatted with a file system such as the NTFS file system on Windows drives, the FAT32 file system on portable drives, the HFS + file system on Mac computers, or the ext4 file system on Linux. The files are then written to that partition by the corresponding file system.

Why can multiple partitions be created and when should do it?

We probably do not need multiple partitions on a USB flash drive, and one partition allows us to use flash memory as a single component. Each partition can be separated from other partitions and even have a different file system. For example, many Windows computers have a separate recovery partition that stores the files needed to restore the operating system to factory defaults.

When Windows is restored, the files are copied from this partition to the main partition. The recovery partition is usually hidden and cannot be accessed from within Windows. This ensures that the files on this partition are never corrupted. If the recovery files were stored on the main system partition, they could be accidentally deleted, infected, or corrupted.

Some more advanced Windows users are interested in creating a separate partition for their personal files. When Windows is reinstalled, you can format the system drive and leave your personal data partition intact without any changes. If you want to install a Linux distribution on your Windows PC, you can install it on the same hard drive as Windows. In this case, the Linux operating system is installed on a partition other than the Windows partition, and the two do not overlap.

Systems that use Linux usually have multiple partitions. For example, they have a swap partition that acts like a page file on Windows. The job of a swap partition in Linux or a page file in Windows is to allocate part of the hard drive to programs that are not on the computer's RAM so that the programs do not stop when the RAM is full. This swap partition is formatted using a separate file system. In Linux, you can also create a dedicated partition for each of the various system directories.

So finally you are free to use different partitions to categorize your data as usually people use drive C as main partition for install windows and install software, and use others (D-E-etc) as storage data.