GPTvsMBR style formatting

Select disk you want to install windows
disk 1
windows cannot be installed on GPT style partition

wut de hel???

First time ever i've come across the "GPT formatting style" the GPT stands for GUID Partition Table.. it turns out that the GPT style partition is just a new style(not new actually, 2005) of partition that allows the partition to be more than 2Tb, for further info, search it.

since this type of formatting doesn't allow windows to be installed, so the partition need to be converted into MBR style. I tried it with diskpart, but it says "partition need to be empty". after some fiddling i found the way to convert it.

The trick is: go to disk management and delete the partition to make it a RAW storage.
*make sure you backup everything
1.Enter command prompt
2.type "diskpart" Enter *run as administrator
3.type "list disk"
4. select the disk you want to convert by typing "select disk n" replace "n" with the drive number
5.type "convert"
6.type "mbr"

the same still applies when you need to convert MBR to GPT style..but type gpt instead of mbr