I have an urgent query on GPT and UEFI BIOS. 1. I recently purchased a X79 CPU and motherboard (ASUS) which obviously has a UEFI BIOS. 2. I deleted all the partitions on my boot hard disk (2TB) and after many attempts found out that it has to be GPT. 3. Anyway, I converted this disk to GPT in partition wizard. Now after converting to GPT, there are 2 alternatives that I found out in my limited experience. a. Make say a 150 GB OS partition (call it C drive) and the balance formated as NTFS (not unallocated). Windows 7 does not install because it says there is not enough space to create a system partition. It needs space for 100 MB FAT32 partition and a 128 MB partition. b. make the same 150 GB OS partition and the balance as unallocated. Windows 7 then completes install and after that in partition wizard I can see 150 GB OS, 100 MB FAT32 partition, 128 MB partition, and unallocated space. I can then go ahead and create partitions in unallocated space. I have no problem in allocating these 2 partitions of 228 MB as it is hardly anything. However, I have some queries: 1. On a fresh subsequent install with formating prior to install, do I need to format only C; or C, 100MB FAT 32 partition, and 128MB MSR. Perhaps the 128MB MSR has got nothing to do with the specific OS install and can be left as it is. 2. In acronis free for western digital, do I need to back up only C:150GB. I think this should be the case. 3. Finally, say on day 1, I did 1 install (say copy 1) and backed up C:. On day 10, I did a new install (say copy 2), backed up. Can I recover copy 1 if I had formated the 100MB partition prior to installing copy 2. The point is that 100MB is dedicated to copy 1 or is independent of copy 1. Please help. Also, if it is possible, can I avoid these 100MB and 128MB partitions.