Same for me. Regular upgrade from 7077x64 to 7100x64. On two machines. cversion.ini on the disc has [HostBuild] MinClient=7077.0 MinServer=7000.0 no need to mod or copy the contents to other bootable media or source to mod the file.
I have to use this trick to upgrade my PC from buid 7068 to 7100. Those who are using 7077 will not have any problem. Thank OP for this useful trick :-D
it seems like the code base for 7077 is the same as 7100 which gives validity to the rumors that 7077 and 7100 are one in the same.
I did a fresh install on one machine running x64 and am doing a straight forward upgrade on an x86 machine. No problems.
I did the upgrade on C, then a clean install on D, both went well. Now I have two HDs to play with. Life is good in 7100 Land.