I have purchased a dell insiron 5521 and had windows 8 preinstalled in it. I wanted to install windows 7 x64 so i disabled the secure boot and started the install. When it asks where to install windows it shows the partitions:
Disk 0 Partition 1: ESP 500MB (System) //now is unallocated space
Disk 0 Partition 2: DIAGS 40MB (OEM Reserved)
Disk 0 Partition 3: 128MB MSR (Reserved) //now is unallocated space
Disk 0 Partition 4: Winretools 500MB (OEM Reserved)
Disk 0 Partition 5: OS 451.9GB Primary //now is unallocated space
Disk 0 Partition 6: PBR Image 12.7GB (OEM Reserved)
I deleted the partition 1,3,5 and they appear now as unallocated spaces (3 different). I want to keep the recovery files in case i ever want to go back to windows 8.
But when i choose a partition to install in the os it shows "Windos cannot be instelled in this partition - Show details" and when i press to see the details it says "The selected disk is of the gpd partition style".
So I cannot install it anywhere!!! What exactly are the rest partitions? How can I bypass this problem?
Thanks in advance.