WinUSB Maker creates a bootable Windows startup disk on any removable USB thumb drive or similar location. It does much more, too, such as creating bootable ISO image, GRLDR, and DOS disks as well. The WinUSB architecture consists of a kernel-mode driver (Winusb.sys) and a user-mode dynamic link library (Winusb.dll). Note WinUSB driver packages that are built by using Windows Driver Kit for Windows 7 can automatically redistribute and install version 1.9 of the files. During driver package installation, the package checks the computer to.

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Windows bootable USB drive, mainly contains Windows official ISO files, is mainly used as an OS installation media. With it, you can boot PC from the bootable USB and install Windows OS successfully regardless the computer is running or dead. You can also use the bootable USB to repair some PC errors by setting PC to boot from the USB.

However, some users complain that the bootable USB is not working and the don't know why. Check out the reasons and follow to make your Windows bootable USB work again:

PAGE CONTENT:

Causes - Why Is Your USB Boot Drive Not Working
Troubleshoot - Fix Windows Bootable USB Not Working (4 Fixes)
Bonus Tip - Create Windows Emergency Disk - Bootable USB Alternative

Error - Windows 10 Bootable USB Not Working

'My laptop is not booting from a bootable USB drive, help. I have a Seagate 1TB hard drive on my computer with Windows 7 on it, but I want to install Windows 10 on the through a Windows 10 bootable USB drive.

Here is the thing that my laptop isn't booting form the USB. The BIOS setting is correct, the priority is the USB bootable drive. Why is my USB not bootable?'

A Windows bootable USB memory stick holds everything which enables a computer to boot up so as to reinstall Windows or fix some system errors. Sometimes, your created bootable USB may not work in your hand, it's worth your while to stop by this article.

Here, you'll learn why is your USB not bootable and how to turn USB back into bootable again on Windows 10/8/7.

Causes - Why Is Your USB Boot Drive Not Working

When you set PC to boot from the bootable USB but it's not working, it's important for you to figure out the exact causes first. Then, pick up the right fix to make your USB bootable again with ease.

Find out the reason that make your bootable USB not working:

USB format is not supported.
USB is not bootable.
Bootable USB is not detected as a boot device.
Bootable USB not showing up or recognized in bios.
Stuck on the boot menu screen and won't proceed.
Can't boot from USB, even select the right boot option.

Troubleshoot - Fix Windows Bootable USB Not Working (4 Fixes)

You may want to know how do I fix this error, attempting boot from USB, right? In this part, we'll discuss and show you the exact steps to turn USB back into bootable again on Windows 10/8/7 in * effective methods:

Before you start, we suggest you test the bootable USB drive on another computer first. It the USB boot up on the other computer, the problem is with your computer.

Let's start fixing your bootable USB not working error on Windows 10/8.1/8/7 with ease now.

Fix 1. Change USB Format to FAT32

As many external USB drives are formatted as NTFS and computers won't be able to detect or even boot from your USB if it's not formatted as FAT32.

Then, here comes the issue, USB unbootable. So make sure that your USB is using FAT32 currently.

If not, format it to FAT32 with the following steps:

Step 1. Connect the USB drive to your PC.

Step 2. Press Windows + E keys to open File Explorer.

Step 3. Right-click on USB and select 'Format'.

Step 4. Set the file system as 'FAT32', tick 'Quick Format' and click 'Start'.

Wait for the process to complete. After this, you'll need to re-create a new bootable drive with Windows ISO files. If your USB is bigger than 64GB, Windows File Explorer may not be able to execute the formatting.

In the case, you may follow to Format 128GB USB to FAT32 for help.

Now, you need to move to the next fix, creating a new Bootable USB.

Fix 2. Create a New Windows Bootable USB

Mostly, the reason why your bootable USB not working is that it's not correctly created. You can reformat the USB and create a new bootable USB for Windows installation or computer repair.

USB specifications: 1. Empty; 2. 8GB or bigger capacity.

Steps to Create Windows 10 Bootable USB:

Step 1. Download Windows Media Creation Tool.

Step 2. Connect USB to PC and double-click to install MediaCreationTool.

Step 3. Select 'USB flash drive' and click 'Next' to continue.

For the onscreen tutorial to complete the process.

Steps to Create Windows Bootable USB on Windows 8/7:

Winusb For Mac Windows 10

Step 1. Download Windows 8 or Windows 7 ISO file.

Don't open the downloaded ISO image
Don't unzip the IOS image

Step 2. Burn or flash the Windows ISO image to USB using a third-party tool.

After this, the USB is bootable and you can follow the Fix 3, 4, 5 to set up USB so as to allow the PC run from it smoothly.

Fix 3. Set USB as Boot Drive - Setting Boot Priority to USB Drive

Another reason why USB not working is that sometimes people connected the USB drive to the PC but forgot to set up the USB as a boot device. Windows cannot detect it. So the best way is to set up the USB.

Here are the steps:

Step 1. Connect USB Bootable drive to PC.

Step 2. Restart PC, press F2/F8, or Del to enter BIOS.

Step 3. Go to the Boot option, set USB as the first boot drive.

Step 4. Save the changes, run PC to boot from the bootable USB.

If this still not work, continue with Fix 4.

Fix 4. Disable Secure Boot Control, Enable CSM or Legacy Boot Mode

Most new computers and laptops would use UEFI/EFI to boot from USB. So, by enabling Legacy Boot Mode and disabling Secure boot will help to configure your computer to boot from the UBS drive.

Here are the steps:

Step 1. Keep the bootable USB to PC.

Step 2. Restart PC and press F2/F8 or Del to enter BIOS.

Step 3. Click 'Secure Boot Control' and select 'Disabled'.

Step 3. Click 'Boot' and select 'Launch CSM', change 'Disable' to 'Enabled'.

Step 4. Click 'UEFI/BIOS Boot Mode' and select 'Legacy'.

After this, save all the changes and restart PC. Now, your computer may be able to run from the Bootable USB again. After entering the bootable USB, you are now good to go installing Windows or repairing PC.

Bonus Tip - Create Windows Emergency Disk - Bootable USB Alternative

Sometimes, you may not want to install a new Windows OS but need a Windows recovery disk that can bring you back to a healthy state of your current Windows OS.

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If this is what you want, stay here. In this part, you'll show you how to create a Windows emergency disk with reliable third-party USB bootable software.

EaseUS Todo Backup, a reliable Windows backup software, with its System Backup and Emergency Disk feature presents you an excellent option to restore your computer OS back to a healthy state anytime:

Pros: Easy to use, Supports all Windows OS, System restore anytime.

#1. Backup OS

Step 1. Download and launch EaseUS Todo Backup.

Step 2. Click 'OS' on the home screen to back up your Operating System (Windows 10/8/7). Then a mini window pops up, it will detect and display the operating system informat