EaseUS Partition Master

Easily manage your disk partitions with this trusted software.

  • Convert MBR to GPT for Windows 11.
  • Migrate Windows 11 to New SSD in 1-Click.
  • Extend C Across Disks, Fix Low Disk Space Error.
Free Download 

Windows 11/10/8/7100% Secure

Content

Total downloads

Page content

How to Partition, Format or Wipe Hard Drive Without OS

Updated by Roxanne on Mar 17, 2022
Written by Jean
mins read

Workable Solutions Step-by-step Troubleshooting
Create a Bootable Drive to Start Computer Without OS in WinPE Step 1:  To create a bootable disk of EaseUS Partition Master, you should prepare a storage media, like a USB drive...Full steps
Format Hard Drive Without OS Step 1:  Select a partition; Step 2: Right-click it and select "Format"; Step 3: Type the label you want...Full steps
Partition Hard Drive Without OS Step 1:  Check for free space; Step 2: Shrink a disk partition to create unallocated space...Full steps
Wipe Hard Drive Without OS Step 1:  Run EaseUS BitWiper. Click the "Wipe Disk" tab; Step 2: Select the targeted HDD or SSD to wipe...Full steps

You can easily format, partition, or wipe a partition within the Windows OS. But how to make it happen if your computer has no operating system or OS fails to boot? Such a problem has been resolved already. You can rely on Windows PE (Preinstallation Environment) to boot the computer. The overall process is as follows:

  • Create a bootable media, which can be an ISO file, USB flash drive or CD/DVD disc
  • Boot the non-operating-system computer from the bootable drive
  • Format, Partition, or wipe the hard drive for a normal usage

Create a Bootable Drive to Start Computer Without OS in WinPE

Are you looking for a bootable partition manager that enables you to create a bootable drive? When your operating system fails to work and doesn't boot normally, a bootable drive is necessary. What's more, there might be no operating system installed on a newly bought computer. So, what's the best bootable partition manager that helps format, partition, for wipe hard drive without OS easily?

EaseUS Partition Master is designed with a highlighted feature called WinPE Bootable disk. With it, you can create a bootable media, including ISO file, USB flash drive, and CD/DVD. And the bootable drive can load and run the partition manager software under the system. Then you can partition, format, and wipe hard drive without OS.

Free Download 

Windows 11/10/8/7100% Secure

Now create a bootable drive by following the details below:

  • Go and find a working computer. 
  • You need to download and install the EaseUS Partition Master to accomplish the essential steps to make a bootable drive.

Step 1. To create a bootable disk of EaseUS Partition Master, you should prepare a storage media, like a USB drive, flash drive or a CD/DVD disc. Then, correctly connect the drive to your computer.

Step 2. Launch EaseUS Partition Master, find the "WinPE Creator" feature on the top. Click on it.

Step 3. You can choose the USB or CD/DVD when the drive is available. However, if you do not have a storage device at hand, you can also save the ISO file to a local drive, and later burn it to a storage media. Once made the option, click the "Proceed" button to begin.

When the process finishes, you have successfully created an EaseUS Partition Master WinPE bootable disk. Now, you can manage your hard disks and partitions through the bootable drive whenever the computer fails to boot normally.

If you have RAID drives, load the RAID driver first by clicking Add Driver from the menu bar, which can help you add the driver of your device under WinPE environment, as some specific device cannot be recognized under WinPE environment without drivers installed, such as RAID or some specific hard disk.

Insert the bootable drive in the computer without OS, set the boot order in BIOS to boot the computer from the EaseUS bootable drive with the steps below.

  • Restart your computer and press F2 at the same time to enter BIOS
  • Set to boot the PC from "Removable Devices" (bootable USB disk) or "CD-ROM Drive" (bootable CD/DVD) beyond Hard Drive
  • Press "F10" to save and exit

Then you can see the interface of EaseUS Partition Master. Follow the guides below to format a hard drive without operating system. 

How to Format Hard Drive Without OS

Usually, in all types of Windows operating systems, you can format a hard drive using the command prompt, the hard drive formatting tool or the Windows Explorer and Windows Disk Management. But things become difficult when you format a hard drive without OS. You can make things easier with the help of EaseUS Partition Master.

Free Download 

Windows 11/10/8/7100% Secure

Also, insert the bootable drive (you have created it at the very first) and boot from it to enter EaseUS partition tool. Then follow the details:

Step 1: Select a partition.

Step 2: Right-click it and select "Format".

Step 3: Type the label you want in the Partition Label text box. 

Step 4: Select the file system type to be created from the Partition Type drop-down list. (FAT/FAT32, NTFS, ReFS and EXT2/EXT3). Choose the Cluster Size (512 byte,1,2,4…64KB) from drop-down list. 

Step 5: Click "OK" when ready. All the introduced changes to the disk layout will be pended until applied in Pending Operation List.

Also, watch the video tutorial on how to format a hard drive without operating system.

How to Partition Hard Drive Without OS

In addition to format had without OS, you can still use EaseUS Partition Master bootable USB drive to partition a hard drive without operating system: such as move space from D drive to C drive to extend system partition, shrink and merge partitions, delete and create partitions. 

Step 1. Check for free space

To divide a disk partition into multiple ones, you must ensure that there has adequate free space to be allotted.

Step 2. Shrink a disk partition to create unallocated space

By doing so, start with the "Resize/Move" feature. Right-click on a partition with a lot free space and select "Resize/Move".

decrease partition step 1

Drag either end of the partition rightwards or leftwards so you can shrink its size as the red arrow does, in order to get ample unallocated space. You can visually know how much space you've decreased in the "Partition size" area. Click "OK".

decrease partition step 2

At last, you need to click the "Execute xx Operation" on the top menu and then "Apply" to save all the changes. Go back on the main window, there should be unallocated space appearing under the same disk of the shrinked one.

decrease partition step 3

Step 3. Create a new partition on unallocated space

The last step is to turn the unallocated space into a usable partition drive with a recognized file system. Right-click on the unallocated space and choose "Create...".

create partition step 1

Customize the partition information by choosing a drive letter, partition label, file system (NTFS, FAT32, EXT2/3/4, exFAT) and many more settings in the Advanced Settings. Click "OK".

create partition step 2

Finally, click "Apply" to confirm that you want to create a partition on the unallocated space. Repeat the whole steps to partition a hard drive in many more partitions.

create partition step 3

How to Wipe Hard Drive Without OS

Wipe Data can erase all the data on the selected partition/disk/unallocated space. In most cases, the data cleaned with this feature are not able to be retrieved. You might need to wipe a hard drive when you don't need it anymore. Use EaseUS BitWiper to wipe hard drive without OS:

Free Download 

Windows 11/10/8/7100% Secure

Step 1. Run EaseUS BitWiper. Click the "Wipe Disk" tab.

wipe disk 1

Step 2. Select the targeted HDD or SSD to wipe.

Notice: Please make sure you have chosen the correct HDD or SSD. Once the wiping starts, your data is irrecoverable.

wipe disk 2

Step 3. Choose Wiping Method and click "Next".

Choose a suitable wiping method. Recommend EaseUS Secure Erase!

wipe disk 3

Step 4. Check the warning message and click "Wipe" to confirm.

wipe disk 4

Step 5. Wait for wiping finish and click "Done".

wipe disk 5

Learn More about EaseUS BitWiper:

To Sum Up

After reading this post, we believe that you've already known how to format hard drive without OS as well as how to partition or wipe a hard drive without the Windows operating system. It's quite easy with the help of EaseUS partition and disk management program.

EaseUS Partition Master Pro makes it easy to partition hard drives with or without OS, making the most of your disk space. You can even use this tool to migrate OS to SSD to speed up Windows, whether moving from small HDD to large SSD or from large HDD to small SSD. 

Free Download 

Windows 11/10/8/7100% Secure

FAQs About How to Format Hard Drive Without OS 

Here are a few questions related to how to format hard drive without operating systems. If you also have any of these problems, you can find the methods here.

Can I reformat a hard drive from BIOS?

You cannot format a hard drive from BIOS. You can only change the boot order get your computer to check for an OS startup CD, DVD, or USB stick. If you want to format HDD without OS, you have to create a bootable USB flash drive or CD/DVD and boot from it to perform formatting.

How do I format my hard drive without logging into Windows?

You can format hard drive without Windows by creating a bootable USB drive using EaseUS Partition Master. Then, start your computer from the bootable drive to format HDD or SSD.

Step 1. Launch EaseUS Partition Master, go to the "WinPE Creator" feature on the top.

Step 2. You can choose the USB or CD/DVD when the drive is available to create EaseUS Partition Master bootable drive.

Step 3. Insert the bootable drive in the computer without OS, set the boot order in BIOS to boot the computer from the EaseUS bootable drive. Then, format your hard drive in WinPE.

How do I format a blank hard drive?

To format a partition using Disk Management, use these steps:

Step 1. Open Disk Management and right-click the new hard drive and select the "Format" option.

Step 2. In the "Value label" field, type a descriptive name for the drive. Use the "File system" drop-down menu, and select NTFS (recommended for Windows 11/10). Use the "Allocation unit size" drop-down menu, and select the Default option. Check the Perform a quick format option.

Step 3. Click the “OK” button to start formatting your hard drive.

Do you need to format a new hard drive?

Yes, you need to format a hard drive need at first before you can use it. You can use EaseUS formatting tool, Windows Disk Management, or Diskpart command lines to format a hard drive to NTFS, FAT32, or other file systems.

If you encounter the Windows was unable to complete the format issue, turn to the tutorial to fix the problem. 

How Can We Help You

About the Author

Updated by Roxanne

Roxanne is one of the main contributors to EaseUS and has created multiple posts on digital devices like PCs, Mobile phones, tablets, Mac, etc. She loves to share ideas with people of the same interest.

Read full bio

Written by Jean

Author Jean has been writing tech articles since she was graduated from university. She has been part of the EaseUS team for over 5 years. Her special focuses are data recovery, disk partitioning, data space optimization, data backup and Mac OS. By the way, she's an aviation fan!

Read full bio

Product Reviews

Product Reviews

TrustScore 4.7 | 49 reviews
  • I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

    Read More
  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

    Read More
  • It won't hot image your drives or align them, but since it's coupled with a partition manager, it allows you do perform many tasks at once, instead of just cloning drives. You can move partitions around, resize them, defragment, and more, along with the other tools you'd expect from a cloning tool.

    Read More

Get EaseUS Partition Master

Your best companion for disk partitioning, MBR to GPT/GPT to MBR conversion,even OS migration

Free Download 

Windows 11/10/8/7100% Secure