Disk partitioning is essentially separating the hard disk into different sections or parts for storage. If you want to try a new operating system without overwriting your main Windows drive, you can do this partitioning the hard drive.

Partitioning the hard disk also makes it possible to multiboot different operating systems. In addition to creating multiboot configurations, you can also use partitions as extra storage mediums for specific files or for backing up important files.

Benefits of Having Another Partition:

  • Backup System Files
  • Install multiple Operating Systems
  • Extend the functionality of the hard drive
  • Improve security (you can use the other partition in case one fails)

Creating a Partition on Windows 8

Hold the Windows logo key on your keyboard and press “R” (Winkey+R). This will launch the Run the utility. Type “diskmgmt.msc” inside the text box and press Enter. This will open the Windows Disk Management utility. This is where you can format, create, and delete hard drive partitions.

Run diskmgmt

In order to create a partition, you need unallocated space. Unallocated space is basically disk space that is not formatted or not prepared for storage. Formatting is the act of preparing a disk space for storage. It similar to building a foundation for a place to be inhabited. Thus, unallocated space is just useless blank space with no “foundation” or format.

To create unallocated space, you need to shrink your hard drive. When you shrink your hard disk, the remaining space becomes unallocated.

To do this, right-click your main drive and select “Shrink Volume.”

Shrink Volume

Now you need to enter the amount you want to shrink the hard disk by in megabytes (1000 megabytes = 1 gigabyte). For example, if you want to create a 1-gigabyte partition, enter 1,000 megabytes in the text box. Now click “Shrink.”

The Disk Management Utility will show you the maximum amount of shrink space available. That’s the maximum size that can be allocated to the new partition.

Shrink Size


You will then see the region of unallocated space (shaded black). Remember, this space is not yet usable.

unallocated space

Now you need to create “foundation” or format for the unallocated space. This will allow for the space to become usable.

Right-click the region of unallocated space and select “New Simple Volume.”



This will launch the New Simple Volume Wizard. This will guide you through the installation process.

New Simple Volume


Assign the disk a drive letter. You can choose any drive letter that is not currently in use.

drive letter


Select a file system for the disk. The file system is basically the type of format or “foundation” the storage device has. If you plan on installing a Windows OS to the partition select the “NTFS” file system.



Name the partition in the “Volume Label” text box.  You can choose any name for your partition. As you can see, we’ve to name ours “Vikitech.”


Now click “Finish” to create the new partition.

New Partition


As you can see, this is the new partition that was just created.

TechNorms Partition

Final Thoughts:

Having another partition is a great asset in case your main one fails. You can use the extra partition to backup important files and install another OS. This is also a great alternative if your PC does not support virtualization. Now you need to always be careful not to format your main disk partition. This will erase all of your files.

See Also:

  • Sandeep Prasoon says:

    My Computer came with Windows 8. It has just two drives C and D. D drive is the recovery drive and Windows is installed in the C drive. Now my question is can I do a partition to my C drive

  • thanks, it works

  • Dharmendra says:


    I dont have much knowledge about this, this tutorial helped me great to do my first partition. Actually now I have 433GB in my C Drive out of which 387GB is free, but shrink volume only showes 21GB which can be shrinked, even if I try 15GB also it is giving an error. “There is no enough space available on the disk(s) to complete this operation” could you please help me??

    My mail id is – dharamphp(at)gmail(dot).com

    • Andrew DeGonge says:

      I know this is a very late response but it may help anyway. Data is most likely written on the disk closer to where you want to shrink. When you erase data, it just cuts it out. What you want is a hard drive optimizer to move all of your files to the front most disk/s so that you can free up the space behind it. Also, look for a hard drive cleaner that formats free space, because deleted files are really still there until they are overwritten, which may block you from trying to shrink the hard drive partition.

  • Good !! Precise and to the point !!!

  • Jordan Fickel says:

    Thank you so much! Perfect straightforward guide, helped me immensely.

    • I’m glad to hear it, Jordan! Let us know how you like Windows 8.1 so far.

  • Bilyana Markova says:

    Hi ,
    The Disk management shows that I created the partition and I really did, but the problem is that when i open My computer… there’s only the main hard disk C. When I open the disk management and click the right button on the new partition I can click on Format, Properties, Delete Volume.. but I cant click on Open or Explore the partition… what should I do now? Help, please

    • Please try to assign a new letter to your drive in the Disk Management window. Make sure it’s unique and isn’t being used by any other drive. Sometimes the disks don’t show up under My Computer windows, if there isn’t a drive letter assigned to it.

      Let us know if that helps.

      • MKM_starfire says:

        i have the same problem , when i open my computer i find only ‘C’
        when in open the disk management i find many partitions but without any letters , how could solve that problem ,please ? 🙂

      • sir may i know how to increase shrink volume

  • Himungshu kashyapa says:

    Bro..That was really great stuff.. but i brought my laptop some months back and i have many things already loaded in ‘c’ if i create a new disk..will the things that are already loaded in ‘c’..get formatted?

    • Not really. All you need to take care of is leave enough space for the stuff that you already have on your C drive when you create partitions.

      For example if you have 50gb of data on the C drive, make sure you have a minimum of 55-60 Gb space to accommodate that data.

      Rest of the space can be used for creating other drives. Once created you can move some data over to the other partition if needed.

      Hope that helps. Let us know how it goes. Good luck.

      • Himungshu kashyapa says:

        that really worked fine bro.. great.. thanx..:)

  • Muhammad talha says:

    it was really helpful….. 🙂 🙂

    • Thanks. Really glad you found it useful. Feel free to ask any questions you may have.

  • You’re welcome. Hope you found it useful.

  • If I want to create a partition for Linux, what format should I use when partitioning? It only seems to give me NTFS or exFAT as options.

  • It was really very helpful….
    looking 4rwd to find solution of diff problems in technoyms

  • Aryan Dubey says:

    Thanks man but I can’t make split my C: second time can u tell me plzz

  • Irfan Ansari says:

    Thank you

  • shiva kishore says:


  • helpful instructions (y)

  • how riskier is it to partition C:? I must split C: of my computer as it has a single drive with everything on it.

  • AnirudhShirsat says:

    Great! Helpled a lot. Thank you!

  • Awesome man, this was a great help 🙂
    Keep the good work up

  • I just tried this and now I have unallocated space that I cannot create a new simple volume or do anything with. All of the new volume options are grayed out so I can’t do anything. What now? Have I just lost 750 GB of space? I hate windows when they don’t give you any options or explanations. I shrunk the drive as described then shrunk it again to create 3 partitions then when I discovered the problem I extended the middle partition but I have no control over the first one I did. How do I fix this?

    • Matt, sorry for the delay in response… Can you take a screenshot and share it with me of what your partition structure looks like? If you don’t want to post it over comments, feel free to email me at melissa[@] and I’ll see if I can help out.

  • Thanks, very simple and quick 🙂

  • Masood Ahmed says:

    i tried this partition technique.. it completely done but system is showing new volume in diskmgmt not showing in PC as drive. and the size of original drive is also reduce…

    • ejaz parvi says:

      same problem here in my laptop… have u any idea plzzz stell me

      • I will have to try this out on my system, thought I am on Windows 10 now. Can you get in touch tomorrow?

        • ejaz parvi says:

          yes y not…..

  • Sama Adv Designer1 says:

    Thank you very much, its working

  • Mondialogo says:

    I am also having the problem of partitioning my drive C. I have about 400GB space on drive C and 1.24GB on drive D. I tried shrinking the drive C and it’s saying there is no enough space. Please help, i want partition my drive C

  • Anis Shaikh says:

    I have 700 gb on c drive but unable to make 100 gb separate drive after i entering 102400MB shrink command disables please suggest

    • 100 Gb should be 100000 mega byte.

  • Yaser Arshad says:

    Thanks a lot.. Worked like a charm… The images helped a lot

  • Aiswarya Rao says:

    A local disk g of 256 mb has been created in my disk space automatically. It denies access and in disk management local disk g cannot be seen. Instead I can see two volumes of 980mb and 260mb respectively. What is in this 256mb? How can I delete it?

    • The 256 mb partition is probably a EFI System Partition. It is seen on computers that follow the UEFI specification. It is required and should not be deleted. Not sure about the 980 mb partition.

  • I just bought a new laptop, I can only see local disk c no D and I can’t find MSOffice, Aren’t these features pre-installed?