on my old computer that used the good old BIOS, this is how i setup my partitions using gparted on a linux livecd:
create partition table format MBR (msdos) create primary NTFS partition created extended partition with a EXT4 partition inside it install grub on the MBR and have dual boot and lifes good
now i got a UEFI laptop and it seems that i cant do that anymore, this is what i tried (again using gparted from a linux livecd):
create partition table format GPT (instead of msdos MBR) create primary NTFS partition create primary EXT4 parition (now all partitions are primary)
but when i try to install windows by selecting the NTFS partition i get an "We couldn't create a new partition or locate an existing one. For more information, see the Setup log files" error.
if i remove all partitions and let windows create the partitions itself on an empty HDD it works, but it creates a lot (3 or 4) small partitions, called recovery and system files and whatnot.
when i used MBR one single partition worked fine, why doesnt it work now and how can i change that?