I have recently found out about Hasleo WinToUSB and really admire how easy and efficient it was to use and in a few minutes I already made my first portable Windows 10 on a USB flash drive. However I have one question, after selecting the destination drive, it popped a dialog saying that "Windows performance might be impacted if you use this USB flash drive to create Windows To Go workspace". Why does WinToUSB prompt this information? Did I do something wrong?
Please don't worry about this warning, WinToUSB will definitely prompt this information if you are using a USB flash drive to create Windows To Go Workspace.
For an operating system boot drive, the 4K random read/write speeds are very important. Unfortunately, the 4K read/write speeds of a small number of common USB flash drives are very slow, so these drives are not suitable for creating a Windows To Go drive.
Now you know that not all USB flash drives are unsuitable for creating a portable Windows, but in fact most of the USB flash drives are suitable for creating portable Windows, because we are unable to test all the USB flash drives, we can only make a prompt in this place.
To sum up, the 4K random read/write speeds of some common USB flash drives are very slow, it takes a long time to install and run Windows from these common USB flash drives, and the lifespan of a USB flash drive is relatively short compared to HDD/SSD, especially if a large amount of data is to be written, so we highly recommend using a Windows To Go Certified Drives or an external HDD/SSD (SSD has better performance) to create Windows To Go. If you want small size storage, we recommend you to buy a Corsair Flash Voyager GTX Flash Drive, which is a true SSD drive that fits into a USB flash drive enclosure, so it is faster and not easy to damage.