FlashBoot is described as 'Tool to create an installable clone of Windows 7/8.x/10 (including all your apps and data) on the USB thumbdrive/HDD and instantly transfer your entire OS to another computer, even with dissimilar hardware:' and is a bootable usb creator in the cd/dvd tools category. There are more than 25 alternatives to FlashBoot for a variety of platforms, including Windows, Linux, Mac, Flathub and Flatpak apps. The best FlashBoot alternative is Rufus, which is both free and Open Source. Other great apps like FlashBoot are Ventoy, balenaEtcher, UNetbootin and YUMI exFAT.
I've successfully used it .