As modern versions of the operating system allow you to select a boot sequence, this feature had become duplicative of the operating system, and was removed from Acronis True Image 2015. Acronis strives to provide the widest range of operating system support possible, and does support Windows XP (Service Pack 3) and later operating systems for our core product functionality, however we cannot provide support for all features when an operating system is discontinued.

See also Acronis True Image 2015: Discontinued Features.