Cannot create new volume unallocated space

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Dell recommends Partitioning your hard drive after you install a hard drive and then Formatting it to use it to store data. Partitioning the drive in Windows means to section off a part of it and make that part available to the Operating System (OS).

Choose your Operating System from the list below and follow the given steps:

• Windows 10 and 11
• Windows 8 and 8.1
• Windows 7

Windows 10 and 11

How to Partition a Hard Drive on Windows 10 (Official Dell Tech Support)

Duration: 2:33
Closed captions: English Only

Create a partition from unpartitioned space with these steps:

1. Right-click This PC and select Manage.
2. Open Disk Management.
3. Select the disk from which you want to make a partition.
4. Right-click the Unpartitioned space in the bottom pane and select New Simple Volume.
5. Enter the size and click next, and you are done.

Windows 8 and 8.1

Create a partition from unpartitioned space with these steps:

1. Hold the Windows key on your keyboard and press R.
2. This launches the Run the utility. Type diskmgmt.msc inside the text box and press Enter. This opens the Windows Disk Management utility.
3. To create unallocated space, shrink your hard drive. When you shrink your hard disk, the remaining space becomes unallocated.
4. To do this, right-click your main drive and select Shrink Volume.
5. Now enter the amount that you want to shrink the hard disk by in megabytes (MB).
6. After the Shrink is done, you will then see the region of unallocated space (shaded black). Remember, this space is not yet usable.
7. Right-click the region of unallocated space and select New Simple Volume.
8. This launches the New Simple Volume Wizard and this guides you through the installation process.
9. Assign the disk a drive letter. You can choose any drive letter that is not currently in use.
10. Select a file system for the disk. The file system is the type of format or foundation that the storage device has. If you plan on installing a Windows OS to the partition, select the NTFS file system.
11. Name the partition in the Volume Label text box. You can choose any name for your partition.
12. Now click Finish to create the new partition.

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Windows 7

Create a partition from unpartitioned space with these steps:

1. Open Computer Management by selecting the Start button. The select Control Panel > System and Security > Administrative Tools, and then double-click Computer Management.
2. In the left pane, under Storage, select Disk Management.
3. Right-click an unallocated region on your hard disk, and then select New Simple Volume.
4. In the New Simple Volume Wizard, select Next.
5. Enter the size of the volume that you want to create in megabytes (MB) or accept the maximum default size, and then select Next.
6. Accept the default drive letter or choose a different drive letter to identify the partition, and then select Next.
7. In the Format Partition dialog box, do one of the following:
   • If you do not want to format the volume right now, select Do not format this volume, and then select Next.
   • To format the volume with the default settings, select Next.
8. Review your choices, and then select Finish.

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I installed Windows 7 ultimate, and I installed it on C partition, but I left a huge amount of unallocated space (490Gb). Now, I want to create simple storage partition, but I cannot do it with Disk Management.

HP Probook is my laptop. And sorry for not having normal screenshots.

Here's the issue:

1) This is how MyComputer looks like. The HP partitions was there by default:

2) This is my Disk Partition Management. You can see how I have as certain amount of unallocated space.

3) I use right click > New volume > and then in the Wizard I choose the following:

4) This is the final step of the wizard, everything looks fine:

5) And then, it pops out this dialog box: I press Yes:

6) After I press Yes, it gives me an error: No matter what size I choose, I tried maximum amount, I tried 15Gb, 300Gb... always the same:

What should I do? But, can I do it somewhere without installing 3rd party software.

Why can't I extend volume into unallocated space?

Why can't I create a new simple volume?

Why can't I extend my C drive even though I have unallocated space?