It is possible to change the size of a hard drive partition on Windows 10. If you’re going to extend the hard drive partition, the new space will be unallocated by default, and you’ll need to format it as a primary partition and to then assign a drive letter and filesystem to it. This task can be accomplished by following the instructions below.
I have a problem with a hard drive on my Windows 10 computer, it is the second hard drive (or “secondary hard drive” as it is called in Windows 10). My first hard drive is an SSD (a solid-state drive) and my second hard drive is a regular hard drive. Recently, I noticed that my secondary hard drive became unallocated (or empty), and I don’t know why it happened. Blog Post
- Unmounted drive cannot be formatted – This problem sometimes occurs when using a new hard drive. In that case, try formatting and installing a new hard drive with the diskpart utility.
- Unallocated space in Disk Management is grayed out – If this problem occurs in Disk Management, you can always use a third-party utility, such as MiniTool Partition Wizard, to set up the new disk.
- Unallocated Windows 10 hard drive – This problem can occur for several reasons, and if you encounter it, you can try some of our solutions.
- Second unallocated hard drive not initialized, displayed, visible, detected – This problem may be caused by your drivers, so you can try reinstalling or updating the hard drive drivers to the latest version and see if that fixes the problem.
The second hard disk is not assigned, how can I solve this problem?
- Use a professional scoring support program
- Using Disk Management
- Updating drivers
- Use the command line and the diskpart command
- Reinstall the hard disk driver
- Change the drive letter
1. Use of professional spaceNuts programme
While the above methods can help you manage an unallocated drive, they can also cause you to lose your files. If you want to solve your unallocated hard drive problem, we recommend Aomei Partition Assistant Professional.
To solve this problem, you need to launch Aomei Partition Assistant, locate the partition, right-click on it and select All Tools and then Dynamic Disk Converter.
All you have to do is click the Apply icon and click Yes when the Apply Changes dialog box appears. When the process is complete, select the Restart now option. After you restart your computer, you can access unassigned files.
Users claim that this method does not delete files from the unallocated drive, but we recommend backing up as a precaution. Many users have reported that this tool has helped them solve this problem. Therefore, we strongly recommend that you give it a try.
AOMEI Partition Assistant Professional
Convert partition type easily with this tool and get rid of all related problems!
2. Using Disk Management
- Press Windows + X to open the Win + X menu.
- Now select Disk Management from the list.
- When Disk Management opens, locate the unallocated space, right-click on it, and select New Sample Volume.
- Set the size of the new partition and choose a partition letter.
- You can now choose to format the disk. If you have a new hard drive, make sure you format it. If there are already files on the volume, select Do not format this volume.
If you just installed a second hard drive and get a message that the drive is unallocated, you need to use the Disk Management utility to create a new volume. It is a tool built into Windows that allows you to manage your hard drives and partitions.
Be aware that this method leads to the loss of files, especially if they are already on the hard drive, so use it at your own risk. If you have purchased a new hard drive, you can format and configure it using this method.
4. Using the command line and the diskpart command
- Press Windows key + X and select Command Prompt (Admin) or PowerShell (Admin).
- Now you need to run the following commands:
- Hard Drive
- Table size
- to select the volume X
- Remove the volume
- Delete Volume (only used if Disk Management cannot create a new volume)
- Table size
If your second hard drive is unallocated, users say you may be able to solve the problem with the diskpart command. Remember that diskpart is a powerful tool. If you’re not careful, this could result in all your files being deleted.
In this solution we will show you how to delete and recreate a problematic volume. This operation will delete all files on the selected volume, so be aware of this. If your hard drive is new and contains no files, you can use this solution without hesitation.
Note the size of the volumes and make sure you choose a volume with free space. Selecting the wrong volume may result in unexpected loss of files.
Then start Disk Management and try to create a new volume. If Disk Manager cannot create a new volume, run diskpart again and repeat the same commands. However, this time do not forget to run the Overwrite Disk command after the Erase Disk command.
Diskpart is an advanced tool, and if you are not careful, you may delete files from the wrong partition, so be extremely careful. Note that this method will delete all files on the selected partition, so it is best used with a new hard drive or with partitions that do not contain important files.
5. Reinstall the hard disk driver
- Open the Device Manager. To do this, right-click on the Start button and select Device Manager from the list.
- Locate the new hard drive, right click on it and select Uninstall Device from the menu.
- When a confirmation dialog box appears, click Delete.
- After uninstalling the driver, click the Check for Hardware Changes icon.
This will install the default driver and solve the problem.
In some cases, the hard drive may not be allocated due to a faulty driver. Your driver may be corrupted, causing this problem. However, you can solve the problem by simply reinstalling the hard drive driver.
6. Change disk letter
- Open the Disk Management program.
- Find the drive that is not displayed, right click on it and select Change drive letter and paths.
- Click on the Edit button.
- Set the desired drive letter and click OK to save the changes.
If you are having problems with an unallocated disk, you may be able to solve the problem by simply assigning a disk letter to that disk. It’s incredibly easy to do, and you can do it directly from Disk Management. Follow the steps below to do this:
After that, the problem should be solved and you should be able to access your disk.
Unallocated disk problems can cause several issues, such as. B. the inability to access your files. If you have this problem, you should be able to solve it with one of our solutions.
Still having problems?
Repair them with this tool:
- Download this PC recovery tool with excellent reviews on TrustPilot.com (download starts on this page).
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Frequently Asked Questions
How do I fix an unallocated hard drive?
If you have just bought a new computer with a hard drive larger than 500GB, you may find you’re unable to install some of the larger games and programs, as they simply don’t have enough room on your drive. We can help you fix that, though. In this post, we’ll show you how to use a free program called Disk Space Fan to allocate your unallocated space to make the most of your hard drive. If you have a hard drive that has become unallocated, don’t worry – you can fix it and recover your data! Windows 10 is designed to make it easy to create partitions and drives. However, sometimes your hard drive might have become unallocated without you realizing it, or due to a system failure. If that happens, then you might want to follow this process to get it back.
How do I get Windows 10 to recognize my second hard drive?
Unfortunately, if you have more than one hard drive connected to your computer, Windows 10 will only be able to access the primary hard drive by default. The good news is if you’re running Windows 10, you can fix this problem. Here’s how: If you have multiple hard drives in your computer, you might find that Windows 10 fails to properly recognize your second or third hard drive. The problem is due to how Windows 10 reads and writes data. When Windows 10 boots up, it reads the hard drive for the boot file. If the boot file is on a second hard drive, the operating system aborts. In order to get around this problem, you need to configure Windows 10 to automatically move the boot file to a different hard drive or partition.
How do I fix an unallocated hard drive without losing data Windows 10?
An unallocated hard drive can be fixed by creating a new allocation unit size for the volume and then allocating the unallocated space to it. This can be accomplished with the fsutil command. The first step is to list all the disks, partitions and volumes on the machine. The following command lists all the disks, partitions and logical volumes: The next step is to identify the disk, partition or volume that needs to be fixed. For this example, the volume is the problem. The volume can be identified by the partition’s name, UUID or disk GUID. The next step is to reduce the allocation unit size. To do this, the volume needs to be brought offline using the diskpart command After going through a factory-style reset on your Windows 10 machine, you may be prompted to “reinstall Windows 10” on your PC. If you’re like most people, you’ll probably choose the option that installs your system to the hard drive. However, if you have an unallocated hard drive, reinstalling Windows 10 to that drive could result in losing data that’s already on the drive.
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