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Welcome to Microsoft Windows 10 Tips & Tricks

How To Create Bootable Windows 10/8.1/7 ISO From Files/Folders


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A couple of weeks ago, I downloaded Windows 7 SP1 Ultimate 64-bit ISO on my Windows 8.1 PC from Microsoft (using my MSDN subscription) and installed Windows 7 in dual-boot with Windows 8.1 using my USB flash drive as bootable media. The installation was uneventful and Windows 7 has been running as it should.

Two days back, I decided to free up some disk space on my Windows 8.1 drive and manually deleted all contents in the Downloads folder and also uninstalled tens of programs that I had installed over the last three months. After gaining GBs of disk space, I realized that the previously downloaded Windows 7 SP1 ISO, which was present in the Downloads folder, has also been deleted along with other files.

Even though I could easily download Windows 7 SP1 ISO pack again in a couple of minutes, I decided to create an ISO file from the bootable Windows 7 USB drive that I had prepared to install Windows 7. Preparing a bootable Windows ISO from installation files/folders is relatively easy and doesn’t take much time either. In short, if have Windows installation files and want to create an ISO image file out of it, you can do so in a few minutes.

Make bootable Windows ISO from installation files

NOTE: This method is applicable to Windows 10, 8.1 and 7 versions.

In this guide, I will show you how you can create a bootable Windows 7/8.1/10 ISO image file from Windows installation files.

Step 1: If all the installation files are in a folder on your PC, you can skip to the next step. And if the files and folders on a USB drive, connect the USB flash drive containing Windows installation files to a PC running Windows 7/8/10 and copy all the contents from the USB to a newly created folder on desktop or any other location.

Create bootable Window ISO from USB step2 thumb

Step 2: Visit this page and download ImgBurn software. ImgBurn is a free burning application but the setup offers you install Skype and Mobogenie during the installation. Make sure to select appropriate options to install the software without Skype and Mobogenie.

Create bootable ISO from USB thumb

Step 3: Launch ImgBurn. Click on Create image file from files/folders option.

Create bootable Window ISO from USB step3 thumb

Step 4: In the resulting ImgBurn dialog, click on the small folder icon (see picture) next to the Source box to browse to the folder containing all copied files from the bootable Windows USB. Browse to the folder and then click Select folder.

Create bootable Window ISO from USB step4 thumb

Step 5: Next, click on the browse icon located next to the Destination box to select a location to save the bootable ISO image file that you’re preparing now. Select a location and click Save button.

Create bootable Window ISO from USB step41

Step 6: On the right side, switch to the Advanced tab (see picture) to see four tabs. Here, click on the tab labeled Bootable Disc.

Step 7: Now, select the option labeled Make Image Bootable, select Emulation type as None (custom), and type 8 in the Sectors to load box by removing the existing 4. Note that if you’re preparing a bootable Vista ISO, you need to keep the 4. For Windows 7, Windows 8 and Windows 10, you need to type 8 in the Sectors to load field.

Create bootable Window ISO from USB step42

Step 8: Click on the small folder icon next to Boot Image box (see picture) and then browse to the folder containing Windows installation files (the folder that contains files copied from the USB), open Boot folder, select etfsboot.com file, and then click Open button to select etfsboot.com as the boot image file. We are almost done!

Create bootable Window ISO from USB step6 thumb

Step 9: Finally, click on the Build button (see picture) to begin creating your bootable Windows ISO image file. Upon clicking the Build button, three dialog boxes will appear one after another. Simply click the Yesbutton when you see the first dialog, click the OK button when you see the second, and then, click the Yesbutton again when you see the last dialog.

Create bootable Window ISO from USB step5 thumb

ImageBurn4 thumb

Create bootable Window ISO from USB step9 thumb

Once the bootable ISO image is ready, you’ll see “Operation successfully completed” message.

Bootable Windows ISO from USB last step thumb

That’s it! You can now use the ISO file anywhere to install Windows. How to test an ISO file to check if it’s really bootable guide might also interest you.


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