%general-entities; ]> The boot method is for when your building on a different architectures. Like building PowerPC and x86, you simply just can't chroot. The rule of thumb here is if the architectures don't match you can't use. For the boot method, follow to . The chroot method is for when your building on a same architectures. Like building x86 and x86, you simply just chroot. The rule of thumb here is if the architectures match you can use. Also x86 to x86_64, you can not chroot, you will have to use the boot method. For the chroot method, follow to .