Install Firmware

I was trying to install Windows on my pc, and sure enough, my USB flash drive conveniently went missing. Luckily, I was able to use my Asus Zenfone 5 to mount the ISO and boot my laptop from it.
So here’s how you can boot computer from Android phone.

What You’ll Need to boot
A rooted Android Device
Computer/Laptop that can be booted from USB drive
Drive Droid App for Android

Step 1. Select Image File

Boot Linux from Android

To mount an iso file from your phone, you have to use a special app called Drive droid. Download it from below Link. After you launch Drive Droid, it will scan for any available images on your device (located in downloads/images). If you don’t have an image, you can download one of many Linux distributions available. Go to the plus icon and select the option to download an ISO.

Boot Windows from Android

If you want to mount a Windows image instead, you first need to create a blank disk image. Allocate the appropriate size that you need and hit done to create the image.

Now go to the plus icon and choose the option to add image from file. Navigate to /downloads/images and select your newly created image file.

Then select the image and mount it as a writable USB. Connect your phone to your computer. You should see a blank drive.

Finally, download a free program called Rufus. Inside of Rufus select your Windows iso file and make sure the write location is set to the blank drive. Then hit write.

Once that’s done, follow the rest of this tutorial.

Step 2: Mounting the Image/iso
Now tap on the image or iso file, and select to mount it as a writable USB. (If this doesn’t work, change it to CD-Rom). If you’re using an Image file (using the Windows Method above, then you first must manually add the image before you can mount it).

Step 3: Booting
Connect your phone to your computer or laptop and make sure the boot order is set to boot from the USB. If all goes well, your computer should boot from the operating systen mounted on via Drive Droid