Hellow sir, I have downloaded ur xen-2.0 source code and tried to compile it in my system. But i received many errors. First the macros in the .s files in xen-2.0/xen/arch/x86/boot/x86_32.s are not expanded.Thus it gave the error. The same thing happened in xen-2.0/xen/arch/x86/x86_32/entry.s file. Then this gave the errors like "undefined reference to do_divide_error" etc. Will u please help me by sending the details of how to solve the problem? My system configuration is, Pentium-4 2.4GHz 256 MB RAM I am waiting for ur mail. Please help me sir. Thanking you, Shashidhara Bhat