By Emily / Last Updated October 14, 2019

What does WinToUSB software do?

WinToUSB (also called Windows To USB) is a free tool, with which you can install and run a fully-functional Windows 10/8.1/8/7 on an external hard drive or USB drive. You can create your portable Windows OSes from an ISO, WIM, ESD, SWM, VHD, VHDX image file or a CD/DVD drive.

Besides, it allows you to clone an existing Windows OS installation (Windows 7 or later) to a USB drive as a portable Windows. Either way, you can take this portable Windows USB everywhere and use your customized OS on any computers.

Moreover, WinToUSB supports creating bootable WinPE USB drive, which can help you transfer the contents of WinPE to the USB drive and make a bootable USB.

It functions like Windows To Go, a feature of Windows 8/8.1/10 Enterprise. But WinToUSB does not require Microsoft certified USB drives and it supports all versions of Windows 10/8/7.

Limitations of WinToUSB you should know

Although WinToUSB tool does better than Windows to Go, it still has some limitations you might need to know.

1. Windows 7and Windows Server 2008 R2 are not equipped with built-in USB 3.0 support, so you can only boot Windows 7 /2008 R2 from a USB 2.0 port.

2. USB flash drives are very slow, so installing and running Windows from it will take a long time. Therefore, using a USB hard disk is much better.

3. Windows 7 is not completely portable. You may be stuck with activation and driver problems when booting on different computers. So you had better use Windows 10/8.1/8 to create portable Windows.

Best WinToUSB alternative

Apart from the restrictions listed above, WinToUSB not working or stuck at 0 is also a big issue annoying most computer users. Luckily, there is a free WinToUSB alternative- AOMEI Partition Assistant Standard.

Compared with WinToUSB, it supports both USB 3.0 and USB 2.0. If you want a higher creating process speed and better performance, USB 3.0 is recommended. Besides, It is compatible with 32-bit and 64-bit of Windows 10/8/7 and Windows XP/Vista.

Now, we will show you how to use this free WinToUSB alternative tool to create portable Windows USB step by step.

Step 1. Plug the USB drive (its size should be larger than the used space of the system drive) into a USB 3.0 or USB 2.0 port on the computer. Make sure it is detected by your machine.

Step 2. Download, install and launch AOMEI Partition Assistant. Then, click "Windows To Go Creator" in the left side.

Windows To Go Creator

Step 3. In the pop-up windows, tick the first option “Create Windows To Go with system disc/ISO”, and then click “Next” to proceed.

With System Disc

Step 4. In this window, select the USB drive you have prepared and click "Browse" to select Windows ISo files. And click “Proceed".

Select Usb Drive And Iso File

Step 5. Then, a note will pop out: the operation will clear data on the target USB device. So please make a backup first if there is something important, free AOMEI Backupper Standard is recommended.


Step 6. After that, click “Yes” to start creating Windows to Go USB drive.

Bonus tips:

▶If you don't have Windows ISO files, you can upgrade to AOMEI Partition Assistant Professional, which allows you to create Windows to go with current system.

Create Windows To Go With Current System

▶To migrate the current operating system to a USB drive will take a long time. Therefore, we recommend using SSD as the destination device, because it is much faster in reading & writing, and can shorten the whole OS migration progress.

▶Apart from making bootable USB to run OS from it on any other computers conveniently, AOMEI Partition Assistant Standard also supports creating bootable USB drive to repair Windows boot issues. The most commonly-used function for OS boot problem is “Rebuild MBR”, which can help fix MBR in Windows 7/8/10.

Final words

Therefore, if the WinToUSB fails to work, or you want to evade the restrictions of WinToUSB, you can try this free and powerful WinToUSB alternative.

Besides, the AOMEI Partition Assistant Pro provides many other advanced functions. For example, you can recover lost partitions, quick partition a hard drive, secure erase any branded SSD, or convert system disk to GPT without data loss.