When will we meet with this situation?
There are many discussions about this in PC forum. Now I take some for examples:
"I'm trying to install Windows 7 on a separate 100GB partition beside my
Windows 8 partition (dual boot). The disc boots fine, but I can't select my
partition (Disk 0 part 5) because of the error: "The selected disk is of
the GPT partition style".
"I tried to install Windows Server 2008 R2 on my partition. When I select the
partition, I got the error message: "Windows cannot be installed on this
disk. The selected disk is of the GPT partition style".
"While trying to Wipe Windows 7 and install Windows 8 on my Zenbook, I have
encountered an annoying error message: 'Windows cannot be installed to this
disk. The selected disk is of the GPT partition style'. No other
information is given."
Now we see people will come to the question about "the selected disk is of the
GPT partition style" when they reinstall Windows system. Before we analyze this
problem, we have to clarify some definitions. First, we need to know that there are
two partition styles: GPT and MBR.
About GPT and MBR
MBR and GPT are the format of hard disk. MBR is the abbreviation of master bootable
record, and it only supports the maximum capacity with 2TB, up to four primary
partitions, or three primary partitions plus one extended partition. Most of
personal computer’s motherboard only supports BIOS and it is installed with MBR, so,
for many users, they always install windows system on the MBR disk.
GPT is abbreviation of GUID partition table. It is a part of EFI, which is port
between operating system and platform firmware. GPT can make use of a very large
space that is more than 2TB limit of MBR disks. GPT disks allow an almost unlimited
number of partitions. Each GPT partition has a unique identification GUID and a
partition content type. And you can have more primary partitions. However, the
Windows implementation restricts this to 128 partitions.
In terms of the description above, it seems that GPT disk is better than MBR,
Unfortunately, the seldom of computers have EFI motherboard, not even mention make
use of GPT disk. In the context of specific case, that may be the greatest of
shortages in GPT disk. As mentioned above, many people can’t install windows system
on GPT disk.
Why does such question happening? Based on what we analyze above, in order to boot
Windows from GPT, our motherboard should support UEFI (EFI-boot & BIOS-boot),
otherwise we should use MBR to boot from. More information please visit: http://technet.microsoft.com/en-us/library/cc738081(WS.10).aspx
How to Solve This Problem with the Simplest Way?
Notice that I said "the Simplest Way". Although there are many solutions we
can find from the forum, I’d like to suggest you use the simplest way: convert GPT
to MBR disk.
Convert GPT to MBR with Diskpart
In some technology or computer forum, some technicians give some advice that convert
GPT to MBR with Diskpart, which is run by program code. The specific steps are
Enter system installing interface by using Win 7 disc or USB hard drive boot.
and then press “Shift”+”F10” to open the command prompt.
Input “Diskpart” (do not input quotation mark, the following as well), and then
press “Enter”to enter operating interface.
Input “list disk”: to check hard disk properties. Pay more attention to capacity
of hard disk to select. Usually, disk 0 is hard disk, and disk 1 is the usb
dirve where wins 7 install.
Input “select disk 0”: to select disk 0 as the disk that is operating.
Input “clean”: to clean up current hard disk’s partition.
Input “convert mbr”: to convert GPT into MBR.
Input “create partition primary size = xxx”: to create the size of primary
Input “format fs = ntfs quick”: to format disk to NTFS quickly.
Input “exit”: to finish operating.
Input “exit”: to shut down the command prompt.
After finishing operating, shut down the command prompt and install windows system on
computer in normal way. The steps seems be concise, but the greatest shortage is
that all data and files will be clean up. If you don’t have backup files in GPT
disk, you will be crying and anxious for that. And if you don’t have some
professional knowledge about program, this way is not recommended.
Convert GPT to MBR with the third-party software
To some users who is a lack of computer professional knowledge, it is a good way that
convert GPT to MBR with a third-party software. Of many kinds of third-party
software, AOMEI Partition Assistant is a not bad tool to help user to convert disk.
It’s the greatest strengthen is to convert disk from GPT to MBR without data
How? With the help of AOMEI Partition Assistant Professional Edition, it is easy to do. Because AOMEI Partition Assistant Professional Edition has a powerful feature
named “Convert GPT to MBR or MBR to
GPT”. Step by Step Guide to convert GPT to MBR:
Step 1. Download, install,
and launch AOMEI Partition Assistant. (see picture, below)
Step 2. Select the disk we want to convert, right-click and select “Convert
to MBR Disk”.
Click “OK” in the pop-up window:
Step 3. Back to the main menu, we can see the pending operations and
click “Apply” to commit the changes.
Wasn't this process a piece of cake? With this powerful partition converter, we can optimize our partition easily. We can convert primary to logical partition,
convert FAT/FAT 32 to NTFS, migrate OS to SDD and so on. We can even make a portable
Windows 8 by using the function of “Windows To Go Creator”. What’s a powerful disk partition converter it is!