Kon-Boot is probably the best tool to bypass Windows login restriction because it allows you to access Windows by logging in to any user account without you knowing the actual password. There is no need to crack or reset the user’s password which is a great time saver and also doesn’t trigger user suspicion. There are two versions of Kon-Boot which is free and paid. The free version of Kon-Boot is actually an older version that comes with an ISO image to burn to disc and IMG file for floppy. Advanced users would know that it’s possible to create a bootable live USB drive from an ISO image file but unfortunately it won’t work for Kon-Boot.
If you open the Kon-Boot ISO file with a supported archiver such as 7-Zip or PowerArchiver, you will see a [BOOT] folder with a file called Bootable_1.44M.img. This would mean that the author of Kon-Boot created a bootable CD ISO image from a bootable floppy. So in order to create a bootable Kon Boot USB, the trick is to use the floppy image instead of the ISO file. Here are 6 different ways to create a Kon Boot USB and hopefully one of the methods below will work for you.
There are quite a number of tools to assist in creating bootable USB drives but UNetbootin is the only one that supports floppy images rather than just ISO. First insert the USB flash drive that you want to install Kon-Boot and format it as FAT32 file system. Then download UNetbootin from the link below and run it. Select the Diskimage radio button, click the drop down menu and select Floppy.
Then browse for the Kon-Boot floppy disk image which is FD0-konbootv1.1-2in1.img. Confirm the drive letter of your USB flash drive and click the OK button. Unetbootin will now start copying the files and then install a Syslinux bootloader to your USB drive. Restart your computer and boot it up with the USB flash drive. If you get it right, you should see a UNetbootin screen with 10 seconds countdown to select Default from the list.
2. Modified Syslinux.cfg for Unetbootin
If the first method fails, you can try downloading the modified version of syslinux.cfg and chain.c32 files and copy them to your USB drive overwriting the ones created by Unetbootin earlier. IronGeek discovered that on certain computers with multiple hard drives, Kon-Boot takes over the first hard drive when booting from USB created by Unetbootin. So he modified the syslinux configuration file to load up Kon-Boot first and then allowing you to try booting in to other hard drives.
A few selections are available for you to choose with this configuration. First you need to select the “1st Kon-Boot” option and let Kon-Boot load. After that you’ll be sent back to the menu. This time select the second option and if it doesn’t work, try the third, fourth and fifth etc.
3. Universal USB Installer
Universal USB Installer is another easy tool that can help you create a USB version of Kon-Boot without hassle in just 3 steps. Step 1 requires you to select Kon-Boot which is located right at the bottom of the list. If you haven’t downloaded the free version of Kon-Boot, tick on the checkbox that says “Download the zip” and your default web browser will automatically run with the download page. Once downloaded, click on the Browse button to locate the kon-boot-all.zip file. Finally select the USB flash drive and click the Create button followed by Yes at the confirmation window.
YUMI is created by the same author as Universal USB Installer which is why they both share very similar graphical user interface. The only difference is YUMI allows you to create a bootable USB flash drive with multiple distributions. The steps to create a Kon Boot USB are exactly the same as Universal USB Installer.
However when booting up a USB drive created by YUMI, you will first see a boot menu. Select “Other Operating Systems and Tools” -> followed by Konboot and finally select “Boot Konboot” from the menu. Kon-Boot will now run and then you will be brought back to YUMI’s boot menu. Now you can select “Continue to Boot from First HD (default)” to boot up Windows and login to any user account without a password.
5. Kon-Boot USB Installer
This fifth method would most probably work for you if all of the above fails because it uses a different bootloader called GRUB. This Kon-Boot USB installer script is actually the official script provided by the author of Kon-Boot for their paid customers except it is packaged with the FREE version 1.1 and not the paid versions 2.0 or 2.1.
To use it, download the installer from the link below and extract to a new folder. Plug in your USB flash drive to the computer and format it as FAT32 file system. Right click on usb_install_RUNASADMIN.bat file and select “Run as administrator”. You should see a Kon-Boot USB Installer window with the information of your USB drive.
Confirm that your USB flash drive is correctly detected and finally click OK to start installing Kon-Boot to your USB flash drive.
6. Hiren’s BootCD
Hiren’s BootCD is the king of all boot discs containing tons of utilities including Kon-Boot which are very useful to computer technicians, enthusiasts and engineers. Hiren’s BootCD comes as an ISO image which is meant to be burned to a disc but it can also be installed to a USB flash drive using the correct tools, or else some of the utilities will not run properly.
You can either use Universal USB Installer or YUMI which was mentioned earlier to install Hiren’s BootCD on to USB pen stick and then boot it up. At the Hiren’s BootCD menu, simply select Kon-Boot from the list.
Additional Notes: Although Kon-Boot’s official website stated that the free version doesn’t support Windows 7, we have successfully tested it on Windows 7 Ultimate 32-bit without problems, but as expected it fails on 64-bit. Another issue we found when testing Kon-Boot USB on Windows XP is only methods #5 and #6 work properly while the rest simply crashes the XP operating system. Looks like GRUB boot loader has better support for Kon-Boot compared to Syslinux.
We’ve also tested the free Kon-Boot on Windows 8 but it didn’t work as it kept on going into automatic repair mode. The latest paid version 2.2 supports Windows 8, comes with a sticky keys feature to launch a command prompt with system privilege before logging in to Windows and support EFI from USB.