How to Resize Partition Without Losing Data [3 Safe Ways]

All the ways you can safely do it!

by Kazim Ali Alvi
Kazim Ali Alvi
Kazim Ali Alvi
Kazim has always been fond of technology, be it scrolling through the settings on his iPhone, Android device, or Windows. And at times, unscrewing the device to take... read more
Reviewed by Alex Serban
Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
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  • Many PC users find it difficult to resize partition without losing data because there's always a fear of things going wrong.
  • The process is simple, and there are a few ways to resize disk partitions in no time.
  • While many prefer the built-in ways, i.e., Disk Management and Diskpart, others find dedicated tools to be a simpler option.
all the ways to resize partition without losing data

Systematic data storage and organization are critical to seamlessly accessing files on the PC, and partitions often help achieve this. But many wonder if one could resize the partition without losing data and whether there are any safe methods for it.

While you could easily split disk space, the thought of losing personal files bothers many. So, let’s find out all about it and the options to resize partition in Windows 10 for free.

Can I resize the partition without losing data?

Yes, you can resize partitions without data loss. This is because the disk space used to store data can’t be shrunk and is, therefore, not affected in the process. Only the free storage on the disk can be changed into an unallocated state. So you can safely resize the partitions and not worry about the critical files.

Here are the primary benefits of creating partitions on the disk:

  • Organized data storage: One of the primary pros associated with disk partitions is how well the data can be organized. The default system partition could be used for Windows files, while others can be used to store personal or work-related files.
  • Better security: This may come as a surprise, but partitioning a hard disk can increase security. Malware and virus often tend to attack the partition where system files are stored, while others remain relatively safer.
  • Run multiple operating systems: There’s nothing better than running multiple operating systems on the PC for some of us. It saves quite a few bucks and eliminates hassle. And partitioning is an easy way to go, though you can use a virtual machine.
  • Simplified backups: Backing up the data is vital to avoid the loss of important files, and with it being optimally organized in various partitions, you can choose one without having to select files and folders individually.

How do I resize partition without losing data?

1. Via Disk Management

1.1 Shrinking a partition

  1. Press Windows + X to open the Power User menu, and select Disk Management.disk management to resize partition without losing data
  2. Right-click on the partition that you want to resize, and select Shrink Volume.shrink volume to resize partition without losing data
  3. Enter the storage space to reduce in the field, then click Shrink, and wait for the operation to complete.shrink space

1.2 Extending the volume

  1. Once done, right-click on the partition to the left of the unallocated space, and select Extend Volume.extend volume to resize partition without losing data
  2. Click Next to
  3. Make sure to enter the maximum available storage in the Select the amount of space in MB text field unless you want to create another partition on the unallocated space, as detailed in the next section, and click Next.extend
  4. Finally, click on Finish to extend to partition to the unallocated space.finish

1.3 Creating a new simple volume

  1. Right-click on the unallocated space in Disk Management, and select New Simple simple volume to resize partition without losing data
  2. Click on Next.
  3. Make sure the maximum available disk space is entered in the Simple volume size in MB text field, and click Next.volume size
  4. Assign a drive letter or go with the default selection, and click Next. Remember, a drive not assigned a drive letter won’t show up in the File letter to resize partition without losing data
  5. Now, choose a File system, Allocation unit size, and Volume label, and click Next to proceed. It’s best that to go with the default settings unless you are fully aware of the process.file system
  6. Finally, verify the details, and click on Finish.start creating new simple volume

That’s how you can resize a partition in Windows 10 without losing data. While doing so, you can either extend another partition or create new ones from the unallocated space created after deleting a partition.

2. Use Diskpart

2.2 Selecting and shrinking a partition

  1. Press Windows + R to open Run, type cmd in the text field, and hit Enter.command prompt
  2. Click Yes in the UAC prompt.
  3. Use this command to run the Diskpart utility:diskpartdiskpart
  4. Paste the following command and hit Enter to view the available disks:list disklist disk to resize partition without losing data
  5. Now, run this command while replacing X with the number allotted to the desired disk:select disk Xselect disk
  6. Execute the following command to view the partitions:list partitionslist partition
  7. Use this command while replacing X with the partition number to select the desired one:select partition Xcommand to resize partition without losing data
  8. Finally, use this command to shrink the partition by the required amount where XXXX represents the space to be shrunk:shrink desired=XXXX

2.2 Extending another partition

  1. After shrinking a partition, use the following command to select another partition to be extended:select partition Xselect
  2. Now, execute this command where XXXX represents the space to be extended:extend size=XXXXextend

2.3 Creating a new simple volume

  1. Simply use this command to create a new partition while replacing XXXX with the available unallocated size:create partition primary size=XXXXcreate to resize partition without losing data
  2. Run this command to assign a drive letter where X represents an unused one:assign letter=X
  3. You can now format the drive with the desired disk format, be it fat32 or NTFS.

That’s it! You can always use Diskpart to shrink partition without losing data and resize them seamlessly. Though the command line utility seems a bit intricate at first, it’s way simpler than Disk Management once you get the hang of things.

3. With a dedicated tool

If the two methods seem complex, there’s always the option to use a reliable and dedicated Disk Management tool to create, format, and resize partitions in Windows.

The basic functions are included in the free version for most tools, but for advanced features, you must subscribe to the paid version. But owing to the simplicity offered by these, many prefer a dedicated tool.

Now that you understand all the ways to resize partition without losing data, check how to speed up an SSD and quick tips to increase the file transfer speed in Windows.

For any queries or to share your thoughts on the subject, drop a comment below.

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If the advices above haven't solved your issue, your PC may experience deeper Windows problems. We recommend downloading this PC Repair tool (rated Great on to easily address them. After installation, simply click the Start Scan button and then press on Repair All.

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