Since official downloads are no longer available, the is the most trusted repository for preserved "bootleg" or modified versions: Windows XP Super-Nano Lite - Internet Archive
Because non-essential services and drivers are removed, these versions boot in seconds and feel incredibly snappy on low-end hardware. mini windows xp bootable iso free download better
Many mini versions, such as the Smallest Windows XP RTM or MicroXP , are stripped down to under 100MB, requiring as little as 39MB of RAM to run. Since official downloads are no longer available, the