If you absolutely must try MicroXP:
MicroXP v0.98 is distinguished by its drastic reduction in file size compared to a standard Windows XP installation. While a standard Windows XP Professional installation requires approximately 1.5 GB to 2 GB of disk space, MicroXP v0.98 installed footprint was roughly 300 MB to 500 MB, depending on configuration. MicroXP - Micro XP Pro 0.98
Despite its speed, MicroXP Pro 0.98 came with significant trade-offs: MicroXP - Micro XP Pro 0
MicroXP - Micro XP Pro 0.98 seems to refer to a specific version of a software or operating system designed for embedded systems or other specialized applications. MicroXP, often abbreviated as µXP or MicroXP, is a small-footprint, real-time operating system (RTOS) that has been used in various industrial and embedded systems applications. Given its designation as "Micro XP Pro 0.98," it suggests a professional or advanced version of the software, likely offering enhanced features, performance, or support compared to a standard or earlier version. Boot time (from POST to desktop): 18 seconds