Summary: Wondering how to fix unallocated hard drive error? Worried about losing your data from hard drive that is showing up as unallocated? Worry no more, this article will not only guide you to fix the unallocated hard drive error but also lets you recover data from the unallocated hard drive with a professional hard drive recovery software- Remo Recover.
In this Article
- Why Hard Drives Become Unallocated?
- How to Recover Data from Unallocated Hard Drive?
- Steps to Recover Data from Unallocated Hard Drive
- Use Disk Management to Make use of Unallocated Disk Space on Windows
What does it mean when a hard drive is unallocated?
An unallocated drive means a hard drive that is not assigned to any drive letter or the hard drive that does not belong to a partition is called unallocated hard drive. So, while installing the operating system on your new computer you need to partition that unallocated hard drive. Since you can't use a hard drive without allocating a drive letter and file system.
In some circumstances, existing hard drives (the disk drive which you are using) will also have unallocated space. The unallocated space on a hard drive indicates that the space on a disk does not belong to any partition and no data can be written to it. In order to use that unallocated space either you need to create a new partition or expand the current partition on the drive.
But, in some rare cases, an entire hard drive becomes unallocated! Yes, at times, your well-functioning hard drive shows up as unallocated all of a sudden for no reason, making all your files and folders stored in it inaccessible.
So, this article lets know why your HDD becomes unallocated and how to fix it without losing any data from it.
Why Hard Drives Became Unallocated?
Generally, your hard disk drive turns unallocated due to basic reasons such as,
- File system damage, corruption, or error
- Internal error
- An inappropriate way of handling hard drives like ejecting improperly
- Virus attack on hard drives
- Accumulation of bad sectors
- Outdated hard drive driver software, etc.
Regardless of the reasons you can still fix the unallocated hard drive. However, if you have important files saved on the unallocated hard drive then it is suggested to recover those files first. Because allocating a hard drive will format the drive resulting in permanent data loss. So, if you have any important data currently on your unallocated hard drive, first recover the data from it.
How to Recover Data from Unallocated Hard Drive?
You can easily recover data from unallocated hard drives using reliable hard drive data recovery software such as Remo Recover. Remo is the most effective data recovery tool that can be used to restore data from unallocated hard drives or external hard drives.
Remo is compatible to recover all kinds of data such as audio, video, photos, documents, in short, Remo can successfully detect and recover over 300 file formats. Additionally, Remo has a unique feature that will allow users to define any custom or undefined file format to recover them.
Most importantly, Remo is the easiest tool to use. So, Click on the download button to try Remo Recover for absolutely free.
Steps to Recover Data from Unallocated Hard Drive:
- Connect the unallocated hard drive to a working computer and run Remo Recover software on the system. Select the Recover Partitions option on the main screen.
- Next, select your unallocated hard drive and hit the Scan button.
- After scanning the unallocated drive, Remo will display all the partitions existing on the drive
- Select the partition you want to recover from. Remo will display all the recovered in the recovery window
- You can identify the partitions based on the partition size.
- From the recovery, window selects the files you recover and save them in the desired location.
Considering an unallocated storage drive is a complicated error there are chances that a normal scan might not work for you. This is why Remo is engineered with the Deep scan option.
In deep scan mode, Remo will scavenge every individual storage sector for file signatures. Once the file signatures are detected, Remo’s most efficient deep scan algorithm will recover every single bit of data from the unallocated hard drive.
Disclaimer: Never save the recovered files on the same drive you are currently recovering.
Now, so that your data is successfully recovered from the unallocated hard drive. So, start fixing the drive using the below instructions.
How to Fix Unallocated Hard Drive?
You can fix unallocated hard drive using various methods like diskpart, disk management or even by updating your device drivers. However, before proceeding any further, there is one important aspect you need to know. Which is, the process of fixing an unallocated hard drive involves formatting the drive. This means, fixing the unallocated hard drive will permanently erase the data which is currently residing on the unallocated hard drive.
Hence, if you. have any crucial files that are stored on your unallocated hard drive, it is strongly suggested to recover the data before repairing the unallocated hard drive.
Scan unallocated drive with antivirus
Run effective antivirus software on your unallocated hard drive to clean up the virus or malicious scripts.
Update Your Hard Drive Driver
- Open Device Manager from Start menu by typing msc in Run tab or from Control Panel -> Device Manager
- Right-click on the unallocated hard drive located under the Disk drive
- Select Properties -> Driver and hit the Update Driver button
Run CHKDSK to Repair Unallocated Hard Drive
- Press Win + R keys together, type cmd, and hit Enter (make sure you run CMD as administrator)
- Next, type in chkdsk H: /f /r /x and hit Enter (replace H with your unallocated hard disk drive letter)
Run DiskPart Command to Fix unallocated Hard Drive
To fix you hard drive showing as unallocated using DiskPart, follow the below-mentioned steps:
- Open DiskPart, type in the below commands and press Enter key after each
- list volume
- select volume C (replace C with your unallocated hard disk drive letter)
- delete volume
- list volume
- select volume C
- delete volume
- delete volume override
Now, open Disk Management and right-click on your unallocated hard drive. Create a new partition and assign it to a new file system.
Use Unallocated Drive Space in Windows With Disk Management
To use unallocated hard drive useful, you can simply follow the below mentioned steps and add the unallocated hard disk space to a partition:
- Open Disk Management and right-click on your unallocated hard drive
- Create a new partition by selecting New Simple Volume
- Choose the Size of the volume and assign it a drive letter and click on next
- Select the desired file system (NTFS or FAT32) , click next and finish
With these steps now your hard drive should be accessible without any errors. Though these steps don’t directly involve data, you need to first take backup / recover your data using Remo hard drive recovery tool and then go ahead with the troubleshooting steps. This keeps your data safe.
Senior Editor, Content Analyst and a fan of exceptional customer service. John develops and publishes instructional and informational content regarding partition management, Windows hot-fixes, data management and computer troubleshooting.
As a tenured data recovery specialist, John shares exceptional insights and blog posts about data loss and data recovery across any storage device. With 8+ years’ experience in writing for Data Recovery for both Mac OS and Windows OS computers, he is an avid learner who always wants to polish and simplify the data recovery process. John passes his free time playing Chess and reading Science Fiction novels.