EaseUS Partition Master

A simple partition tool to manage disk space in Windows 10

How to Partition, Format or Wipe Hard Drive Without OS

Jean updated on Dec 30, 2020 Partition Manager | How-to Articles

PAGE CONTENT:
Create a Bootable Drive to Start Computer Without OS in WinPE
How to Format Hard Drive Without OS
How to Partition Hard Drive Without OS
How to Wipe Hard Drive Without OS

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.

Your Reliable Choice - EaseUS Partition Master

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. Prepare a disc or drive

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. Correctly connect the drive to your computer.

Launch EaseUS Partition Master, go to the "WinPE Creator" feature on the top. Click on it.

create easeus partition master bootable disk

Step 2. Create EaseUS Partition Master bootable drive

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 "Proceed".

create easeus partition master bootable dis

You have 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.

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: Install and launch EaseUS Partition Master

Run EaseUS Partition Master

Step 2: Partition Hard Drive

Shrink partition:

1. Right-click on a partition that you want to shrink and select "Resize/Move".

Shrink partition

2. Drag the end of the partition rightward or leftward or adjust the space by clicking the "Partition size" column. Click "OK" to continue.

Extend partition:

1. To extend partition, you need to leave unallocated space next to the target partition. If not, shrink a partition as mentioned above to leave enough unallocated space behind the target partition first.

2. Then right-click on the target partition and select "Resize/Move".

Extend partition

3. Drag the target partition handle into the unallocated space to extend partition. Click "OK" to continue.

Create partition:

1. On the main window, right-click on the unallocated space on your hard drive or external storage device and select "Create".

Create partition on unallocated space

2. Set the partition size, partition label, drive letter, file system, etc. for the new partition and click "OK" to continue.

Delete partition:

1. On the main window, right-click on the hard drive partition which you want to delete and select "Delete".

Select parittion to delete

2. Click "OK" to confirm.

Change partition drive letter:

1. Right-click the partition, and choose "Change Drive Letter".

Change Drive Letter - Step 1

2. Click the down arrow, choose a drive letter for the partition, then click "OK".

Step 3: Execute operations

Click the "Execute Operation" button at the top corner and keep all changes by clicking "Apply".

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 partition management software to wipe hard drive without OS:

Step 1: Insert the bootable drive to open EaseUS Partition Master. Select a disk/partition (volume)/unallocated space.

Step 2: Right-click it and select "Wipe Data".

Step 3: Set the number of times to wipe the partition in the Wipe Disk/Partition window (The wipe algorithm is to alternately overwrite the disk by 0x00 and random digit according to the wipe times).

Step 4: Click "OK" when ready. All the introduced changes to the disk layout will be pended until applied in Pending Operation List.

Wipe Partition - Step 1

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. 

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 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. 

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How to Partititon a Hard Drive on Windows 10/8/7

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