Sometimes, some downloaded files are saved to C drive by default (the folder is called Downloads).
C drive is very important but it is often a target of viruses and malicious programs.
Besides, system issues always crop up, even leading to an unbootable system.

Besides, some important data stored in this drive turns lost.
After finishing, you might disconnect the drive and data wont be affected by the computer.
Well then, how to backup C drive to external hard drive?

Related post:How to Back up Windows to Safeguard your gear?
These partitions are hidden and there is no drive letter.
To ensure Windows can boot from the system backup, you better back up all the system-related partitions.

(it is hidden, no drive letter) are created separately during the Windows setup process.
Just right-hit theStarticon and chooseDisk Managementto open DM.
Then, you’ve got the option to see if there are some hidden partitions.
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If yes, back up C drive and all the system partitions.
If there is only a C drive, backing up C drive is enough.
Just follow one way below to backup your system.
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It is designed to create a system image for the operating system and set up file backup.
Then, view all the items by large icons and tap onBackup and Restore (Windows 7).
Step 2: ClickCreate a system imagefrom the left pane.

If you backup files on C drive to a USB drive via theSet up backupfeature, it is allowed.
EFI system partition, C drive and Recovery Partition or System Reserved Partition and C drive may be chosen.
To do this work, the WBadmin command tool could be a good option.
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Do you know how to back up files from Command Prompt?
In this post, we will show you 4 types of Windows 10 backup command line tools.
Step 1: Typecmdto the Windows search and right-tap on Command Prompt to chooseRun as administrator.

Or, directly clickRun as administratorfrom the right pane.
How to open Command Prompt (CMD) in Windows 11?
Remember to replace backupTarget with your own.

Compared to a system image backup, it is different.
Replace the target with your drive.
It can function well in Windows 11, 10, 8, and 7.

By default, this third-party program helps to back up the Windows operating system.
How to backup only new or changed files in Windows 11/10?
This edition allows you to free use in 30 days.

You wont choose the backup source again.
Step 5: ClickBack Up Nowto execute the system image backup at once.
Compared to them, you’re able to find the operations in MiniTool ShadowMaker are simpler.
This third-party software offers more powerful features in PC backup and the way is more flexible.
Thus, the best way to backup C drive is by running MiniTool ShadowMaker.
Just get it to have a try.
To backup files stored in C drive, you could also use Backup and Restore (Windows 7).
It offers you a feature calledSet up backupthat allows you to choose files you better back up.
Then, clickSave controls and run backup.
In my case, I dont find the files saved on the desktop, and only folders are found.
Besides, MiniTool ShadowMaker can be also used to back up files saved on C drive.
Just choose the proper way to create a backup for the Windows operating system or files saved on it.
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