Can You Backup C Drive to OneDrive in Windows 10/11

With OneDrive, Windows users can sync and backup C drive to the cloud, but only with a few types of files. To be able to backup an entire C drive to cloud, including OneDrive, Google Drive or Dropbox, you need a professional backup and recovery solution from EaseUS Todo Backup.

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Updated by Daisy on Feb 22, 2023
Written by Jean

Workable Solutions Step-by-step Troubleshooting
Backup C Drive Files 
  1. Way 1. Backup C Drive Files with Desktop...Full steps
  2. Way 2. Backup C Drive Files via File Explorer...Full steps
Backup C Drive System Launch EaseUS Todo Backup > click "Create Backup" > select the question mark > "backup contents"...Full steps

C Drive is an essential part of your computer known as a hard disk containing system operation and system-related files.

You may encounter terrible situations like virus attacks, cyber-attacks, system crashes, disk crashes, or any damage to your system.

In this situation, it is mandatory to have a backup for C Drive to recover important system operations and files.

In this blog, you will know what C Drive is for on windows, why, and how to back up C Drive systems, Files, and Applications to OneDrive.

What Is C Drive for on Windows 10 or 11 Computer

Modern hard disk drives have large storage capacity; you can divide them into any number of partitions C, D, E, F, etc.

Most users use C Drive to store windows operating systems and different applications. The functions of D Drives vary from computer to computer.

If you have not divided your hard disk drive into sections yet, then your D drive is served as a recovery disk. You will need to use D Drive when you need to repair or reinstall windows.

what is C Drive

In the area marked as "Devices with removable storage", these drives can be your DVD/CD, an external storage source, or even your card reader from your printer. You can quickly identify them by their icons.

C Drive is an essential part of your computer known as a hard disk drive. It is responsible for storing your computer's operating system, applications, and all files you download from the internet.

Everything you install on your computer is stored in C Drive. Even when you turn on your computer, it sends a signal for booting to C Drive.

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How to Back Up the C Drive of My Computer

You can use third-party tools such as EaseUS Todo Backup which offers more flexibility and customization when taking backup and restoring the files.

backup C Drive

Why Do You Backup C Drive to OneDrive

Users used to back up the C drive to an external hard disk.

But nowadays, it is preferred to back up C Drive to OneDrive.

One drive is a cloud storage service by Microsoft to store and sync your valuable information anywhere, anytime.

It is a fantastic way to protect your valuable asset from cyber-attacks and any loss due to hardware damage.

Backing up C Drive to OneDrive has many advantages:

  • One drive is a cloud storage service that will backup your data without plugging in an external hard drive.
  • It is safe to use. Don't worry about hardware failure or crash.
  • Easily accessible, you can sync folders and files anywhere in a few seconds.
  • In contrast to external hard disk drives, it is more affordable.

Can You Put an Entire C Drive on OneDrive for Backup and Sync

You cannot, OneDrive is only for backing up or syncing files and folders associated with your user account. You need to look up more information about the OneDrive backup limits. But with EaseUS Todo Backup, you can choose everything on your computer to backup.

Before starting the Backup of your C Drive to OneDrive, you must know that OneDrive is exclusively for storing important files and folders.

OneDrive personal cloud storage is 5GB. When you set up OneDrive, it automatically syncs all your files, including documents and photos, to the OneDrive cloud.

If you don't want to sync all files, you can sync specific files and folders such as your important documents, pictures, and system files.

Make sure that storage space is enough for all the files you want to backup. Chill out! If it's not enough for your system's files, you can grab a Microsoft Office 365 bundle.

Microsoft Office 365 bundle has a storage capacity of 1TB. If it's too much for you, then you can grab storage of 100GB for $2 per month.

For File Synchronization: How to Backup C Drive Files to OneDrive

You can backup your C Drive files to OneDrive using two easy methods for window 10 and 11:

  1. Method 1. Backup C Drive Files to OneDrive with the Desktop App
  2. Method 2. Backup C Drive Files to OneDrive via File Explorer

Method 1. Backup C Drive Files to OneDrive with the Desktop App in 3 Easy Steps

Step 1. Open the OneDrive app. Right-click inside the OneDrive folder; when it opens, left-click on "Settings."

backup c drive files to OneDrive - Step1

Step 2. Go to the "Backup" tab and select "Manage Backup".

backup c drive files to OneDrive - Step2

Step 3. In the Backup your folders dialog box, select your important files such as Desktop, Pictures, Documents, and User folder to Backup. Click "Start Backup" to backup files to OneDrive.

backup c drive files to OneDrive - Step3

Method 2. Backup C Drive Files to OneDrive via File Explorer

OneDrive has fantastic features for its users. When you install OneDrive, it creates a desktop folder in your computer to automatically sync files from this folder to the cloud.

You must copy and paste the desired files into it, and OneDrive will automatically backup them. Follow the instructions below:

Step 1. Type OneDrive in the search bar and open your OneDrive folder in File Explorer.

backup c drive files to OneDrive with File Explorer - Step1

Step 2. Copy your desired C drive files and paste them into the OneDrive folder. Then, the OneDrive desktop app will automatically sync them.

backup c drive files to OneDrive with File Explorer - Step2

For Full C Drive Backup: How to Backup C Drive System, Files, and Applications to OneDrive

There are several methods for the entire C Drive System, file, and application backup, but the easiest and most cost-effective option is EaseUS Todo Backup.

EaseUS Todo Backup provides backup of your valuable assets and instant recovery with high efficiency in one click.

  Free Download

Support Windows 11/10/8/7

EaseUS Todo Backup offers each user 250GB of free cloud storage so you can access your backups anywhere, anytime. It lets you choose your desired operating system and provides full C Drive Backup.

Suppose you want to keep your Backup on a cloud, no worries. EaseUS Todo will automatically connect your account to Google Drive, OneDrive, and Dropbox.

EaseUS Todo offers unmatched backup features, including:

  • Disk/Partition backup and recovery
  • System image backup and recovery
  • Cloud backup
  • Bootable backup
  • Disaster recovery

EaseUS Todo Backup executes a differential backup to maximize backup speed and manages all your old backups by deleting, merging, and compressing files.

You can backup your C Drive daily or monthly, but with an auto backup schedule, you can get rid of all your backup headaches.

EaseUS Todo Backup protects your privacy with secured-password protected backups.

Additionally, it provides bootable backup, which is best for information leakage and destruction control due to viruses, malware, and any cyber-attack.

So, what are you waiting for? Have a try! Steps of how to use EaseUS Todo Backup are listed below:

Step 1. Launch EaseUS Todo Backup on your computer, and click Create Backup on the home screen and then hit the big question mark to select backup contents.

backup outlook mail step1

Step 2. To back up your Windows operating system, click "OS" to begin the backup task.

backup outlook mail step2

Step 3. Your Windows operating system information and all system related files and partitions will be automatically selected so you don't need to do any manual selection at this step. Next, you'll need to choose a location to save the system image backup by clicking the illustrated area.

system backup

Step 4. The backup location can be another local drive on your computer, an external hard drive, network, cloud or NAS. Generally, we recommend you use an external physical drive or cloud to preserve the system backup files. 

backup outlook mail step4

Step 5. Customiztion settings like enabling an automatic backup schedule in daily, weekly, monthly, or upon an event, and making a differential and incremental backup are available in the Options button if you're interested. Click "Backup Now", and the Windows system backup process will begin. The completed backup task will display on the left side in a card style.

backup outlook mail step 5


C Drive is a crucial part of your computer system, and you must have a backup plan to avoid data loss.

In this regard, EaseUS Todo Backup provides a complete solution for backup and recovery of C Drive to OneDrive in Windows 10 or 11. Don't hesitate to give it a try! You wouldn't regret it!

  Free Download

Support Windows 11/10/8/7

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Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles.

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Written by Jean

Since graduating from university, Jean has been writing tech articles and has been a valuable member of the EaseUS team for over 5 years. Her areas of expertise include data recovery, disk partitioning, data backup, and multimedia world.

Read full bio

Product Reviews

TrustScore 4.7 | 47 reviews
  • Taking everything into consideration, we can say that EaseUS Todo Backup Home can offer you a little extra sense of security with a set of advanced tools. The interface provides quick adaptation, every process guiding you all the way through so you don't get stuck or further damage your system rather than keeping it safe.

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  • EaseUS includes all the features I expect from backup software like versioning, incremental backups, and scheduling. For more advanced users, EaseUS allows you to install a pre-boot environment onto your hard drive so you can use it to restore files without burning a CD or putting it on an external USB drive.

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