Unlike later versions that might use Fbinst or other internal formatting engines, version 0.2.3 often required or integrated the HP USB Disk Storage Format Tool.
What makes the 0.2.3 version exclusive is its handling of Grub4DOS and the presetup.cmd process. In this build, the developer, JFX (Jianjun Feng), perfected the "USB multiboot" trick:
Let’s be realistic. For installing Windows 11 or booting on a UEFI-only Surface tablet, no. You need Ventoy or Rufus. winsetupfromusb 023 exclusive
However, for:
...the WinSetupFromUSB 023 exclusive is irreplaceable. It is the last version that treats Windows XP as a first-class citizen without forcing .NET 4.8 or Windows 10 APIs down your throat. Unlike later versions that might use Fbinst or
Before the modern wizards and one-click tools, there was WinSetupFromUSB 0.2.3 – a rare, lightweight, and highly focused version that many advanced users still seek out today.
“Bootloader Chaining and Multi-Stage ISO Emulation: Reverse Engineering WinSetupFromUSB 0.2.3’s Legacy-to-UEFI Hybrid Boot Method” JFX (Jianjun Feng)
To understand why version 0.2.3 was so exclusive, one must understand the chaos of the late 2000s. The floppy disk was dead, and installing Windows XP from a USB stick was notoriously difficult. The Windows XP setup routine was hard-coded to look for the installation files on a CD-ROM or floppy; it simply didn't understand how to handle a USB mass storage device during the boot phase.
While newer tools like Rufus solved this later, WinSetupFromUSB 0.2.3 was one of the first to crack the code elegantly. It didn't just copy files; it "injected" the necessary drivers and modified the txtsetup.sif file on the fly, tricking Windows XP into believing the USB stick was a local hard drive or optical drive.