How To Add or Increase More Than 35 GB To Your Computer Using a Virtual Disk

Are you Running out of storage space on your computer ? Don't be frustrating, especially when you need room for large files, software, games, or virtual machines. While you can't magically increase your physical hard drive capacity without installing new hardware, Windows provides a powerful feature called Virtual Hard Disk (VHD/VHDX) that allows you to create additional virtual storage on your existing drive.

A virtual disk behaves like a separate hard drive. Once created and attached, it appears in File Explorer with its own drive letter, allowing you to save files, install certain applications, and organize data just as you would on a physical disk.

What Is a Virtual Hard Disk?

A Virtual Hard Disk (VHD or VHDX) is a file stored on your physical hard drive that functions as a separate disk. Windows treats it like an actual storage device after it has been mounted.

Common uses include:

• Creating extra storage partitions.
• Testing software safely.
• Running virtual machines.
• Separating personal and work files.
• Backing up important data.
• Organizing projects without repartitioning the physical drive.

Can You Really Add More Than 35 GB?

Yes—but there is an important limitation. The extra storage comes from your existing hard drive's free space. For example, if your SSD has 200 GB of unused space, you can easily create a 35 GB, 50 GB, 100 GB, or even larger virtual disk. unless otherwise you need to buy for activated software from the trusted sources unless it will not activate physical extra storage.

This does not create new physical storage. Instead, it allocates part of your available free space into a virtual drive that Windows recognizes independently.

Requirements

• Windows 10 or Windows 11
• Administrator account
• At least 35 GB of free storage
• NTFS formatted drive

Step 1: Open Disk Management

Press Windows + X and select Disk Management. Alternatively, press Windows + R, type diskmgmt.msc, and press Enter.

Disk Management is Microsoft's built-in utility for managing physical and virtual storage devices.

Step 2: Create a Virtual Hard Disk

1. Click the Action menu.
2. Select Create VHD.
3. Choose where to save the VHD file.
4. Name it something descriptive.
5. Enter the desired size (for example, 40 GB or 50 GB).
6. Select either VHD or VHDX.
7. Choose either:
   • Dynamically Expanding – Uses storage only as needed.
   • Fixed Size – Allocates the full size immediately.
8. Click OK.

VHD vs VHDX

Microsoft recommends using VHDX because it supports larger virtual disks, improved protection against corruption, and better performance compared to the older VHD format.

Step 3: Initialize the Virtual Disk

After creating the virtual disk, Windows will display it as an uninitialized drive.

1. Right-click the disk label.
2. Select Initialize Disk.
3. Choose GPT for modern systems.
4. Click OK.

Step 4: Create a New Volume

1. Right-click the unallocated space.
2. Select New Simple Volume.
3. Follow the wizard.
4. Assign a drive letter.
5. Format using NTFS.
6. Finish the wizard.

After formatting, your new virtual drive will immediately appear in File Explorer.

How Dynamic Virtual Disks Work

A dynamically expanding VHDX grows only when you save files inside it. For example, even if you create a 50 GB virtual disk, it may initially occupy only a few megabytes until data is added.

This makes dynamic disks excellent for users who want flexibility without instantly consuming large amounts of storage.

Advantages of Using a Virtual Disk

• No need to buy another hard drive.
• Easy to create and remove.
• Excellent for testing software.
• Keeps files organized.
• Portable between computers.
• Useful for backups.
• Supports BitLocker encryption.
• Ideal for development environments.

Things You Should Know

Although a virtual disk behaves like another drive, it still relies on your physical storage. If your main drive becomes full, the virtual disk cannot expand further.

Deleting the VHD or VHDX file permanently removes everything stored inside it unless you have made backups.

Performance Considerations

On modern SSDs, virtual disks usually perform very well with little noticeable difference compared to standard partitions. On traditional HDDs, performance may vary depending on fragmentation and disk speed.

If maximum speed is important, choosing a fixed-size VHDX can sometimes provide slightly better performance because Windows does not need to continually expand the file.

How to Detach a Virtual Disk

1. Open Disk Management.
2. Right-click the virtual disk.
3. Select Detach VHD.
4. Confirm the operation.

Detaching removes the drive from File Explorer but does not delete the VHDX file.

How to Reattach the Virtual Disk

1. Open Disk Management.
2. Click Action.
3. Select Attach VHD.
4. Browse to the saved VHDX file.
5. Click OK.

The virtual drive will instantly become available again with all of its files intact.

Common Mistakes to Avoid

• Creating a virtual disk larger than your available free space.
• Saving important files without backups.
• Deleting the VHDX file accidentally.
• Using FAT32 instead of NTFS for large files.
• Ignoring available storage on the host drive.

Frequently Asked Questions

Does this increase my computer's physical storage?

No. A virtual disk simply allocates existing free space into a separate drive.

Can I install software on a virtual disk?

Yes. Many applications can be installed on a virtual drive, although some system-level software may still require installation on the main Windows partition.

Is a virtual disk safe?

Yes. VHDX is a Microsoft-supported technology used by Windows and Hyper-V. It is reliable when properly managed and backed up.

Can I create a 100 GB virtual disk?

Yes, provided your computer has at least 100 GB of available free storage.

Can I move the virtual disk to another computer?

Yes. Simply copy the VHDX file and attach it using Disk Management on another compatible Windows computer.

Final Thoughts

Creating a virtual hard disk is one of the easiest ways to organize your files and simulate additional storage without modifying your existing partitions. While it does not physically increase your computer's storage capacity, it provides a flexible, secure, and professional solution for managing data, testing applications, and keeping projects separate. If you have more than 35 GB of free space available, creating a virtual disk is a practical way to make better use of your computer's storage resources.