4 ms·XP support ended years ago.by overgryphon 10y agoXP support ended years ago.ikeboy 10y agoWhat is the Win 10 bootmgr code for XP loading counted as?corndoge 10y agoBackwards compatibility!asveikau 10y agoLots of bootloaders (I would say most I have used) allow chainloading another bootloader. That is what is going on here. Pointing bootmgr at another partition and saying "boot that".