How to Create an ISO Image of My Hard Drive?

Posted by @Ada

March 23, 2018

You can refer to this article and learn how to create an ISO image of my hard drive with DISM command and a professional backup and restore software.

Overview of ISO image

As we all know, it is very important to create disk backup to protect your whole computer. If there is some disaster happens to your computer, you can restore it to the previous state easily. If the backup is ISO image format, you can restore or employ it on other devices easier.

The ISO image itself is bootable. When your computer cannot boot or have boot issues, you can use it to boot your PC and restore it. Also, you can use it to deploy on another computer.

How to create an ISO image of my hard drive with DISM tool?

DISM (Deployment Image Servicing and Management) is a feature includes in Windows 10, which allows you to capture Windows image under recovery environment. You can use the (DISM) tool to capture an image of your hard disk for deployment and save it as a Windows image (.wim) file. To use it, you need a Windows 10 recovery media or installation disk.

Step 1. Determine which partitions to capture

To capture Windows 10 disk image, first, you should determine which partitions to capture. You do not have to capture Microsoft Reserved partition and extended partition because they are managed automatically.

Step 2. Assign drive letters to partitions

If the partition you want to capture does not have a drive letter assigned, assign a drive letter first.

1. Boot your PC from the recovery media or installation media. At the Windows PE command prompt, type “diskpart” to open diskpart tool.

2. Type “list disk” to view the disk in your computer.

3. Then choose the disk by typing the command “select disk”. For example select disk 0.

4. Type “list partition” to view the partitions on the selected disk.

5. Select the partition with the select partition command. For example, if you want to assign the drive to partition 2, the command should be “select partition=2”.

6. Assign the drive letter to the partition with “assign letter”. For example “assign letter=S”. Then type “exit” to return to Windows PE command prompt.

Assign Letter

Step 3. Capture partition image

To create ISO image for Windows 1 using DISM, at the Windows PE command prompt, type the following command:

Dism /Capture-Image /ImageFile:s:\my-system-partition.wim /CaptureDir:S:\ /Name:"My system partition"

DISM Capture

DISM command can be also used to create an ISO image from your operating system.

To make it as bootable ISO image, open Windows 10 installation disc in File Explorer. Copy its contents and paste to a folder on your external hard drive or Network. Copy the image create before to the source folder and replace the original one.

Then download and install the latest Windows Assessment and Deployment Kit and install Deployment Tools. Then run the following command:

oscdimg.exe -m -o -u2 -udfver102 -bootdata:2#p0,e,b[path of the iso files]\boot\ F,e,b[path of the iso-files]\efi\microsoft\boot\efisys.bin [path of the iso-files][new location to save the iso image of the current windows]

ISO image vs. image backup

As above-mentioned, an ISO image itself is bootable, and it can be used to boot your computer as well as restore it. However, you cannot compress an ISO image, it will take you much space. Also it is really troublesome to create an ISO image. While an image backup can be created very easily and can be compressed to save backup space. Besides, an image backup can be also used to restore your computer when needed.

Create image backup with AOMEI Backupper

For regular users, Windows built-in tool is enough to create image backup. However, if you want to have a more flexible and advanced way to create image backup, you can use AOMEI Backupper.

AOMEI Backupper supports not only NTFS volumes, but also FAT, EXT volume. Incremental and differential backup, missing features of Windows backup tool, can be created easily with AOMEI Backupper. Also, you can have multiple schedules instead of only one.

What’s more, the utility Create Bootable Media allows you to boot your computer when you have boot issues.

To create image backup for your hard drive, follow the steps below:

Step 1. Download and open AOMEI Backupper. At the main interface, select Disk Backup under Backup tab.

Disk Backup

Step 2. You can name it for "Task Name" box to help you distinguish it from other backups.

Click Step1 to select source disks that you want to back up and you can add several disks to be backed up via Disk Backup each time.

Click Step2 to select a destination path to store image file.

Task Name

Step 3. To backup disk automatically, you can click Schedule to set it up.

Schedule Backup

Tips, you can also click Backup Option to enable encryption and email notification.

Step 4. Click the Start Backup button and wait for the process to complete.

If you worry about boot issue, you can create a bootable disk. In the event of system unbootable, you can use it to boot all versions of Windows 10/8/7 to restore your PC.


As mentioned, you have learned how to create an ISO image of my hard drive with DISM command, but it is not easy to create one. If you use AOMEI Backupper, you can set up a scheduled backup and it will automatically keep your image backup up to date.