there are a few other things you will need to do as well.
(Seans guide)
Make sure AHCI is enabled firstly
Benefits of a UEFI/GPT boot disk vs. MBR:
Although not currently applicable to SSDs, GPT disks can exceed the 2.2TB bootable limit of a MBR partitioned drive. MBR drives are limited to four partition table entries, unless a secondary "extended" partition structure is created.
Data critical to platform operation is located in partitions, and not in un-partitioned or "hidden" sectors which in certain instances, can lead to system instability. Data contained in hidden sectors that result in system problems are difficult to debug.
GPT disks use primary and backup partition tables for redundancy and 32-bit cyclic redundancy check (CRC32) fields for improved partition data structure integrity.
A UEFI boot is more secure, and less vulnerable to pre-boot malware.
A system utilizing a UEFI boot, will boot and recover from sleep faster than the same machine using MBR.
UEFI is the future, and as different implementations of UEFI mature, UEFI will be used for much more than just booting a computer.
Booting and partitioning of GPT for Windows 7 Automatically:
Boot from the Windows 7 install media (You must initiate this boot from a device labeled as a UEFI device, or the installation of Windows 8 will produce an error that the OS cannot be installed to a GPT partition) These UEFI boot devices will have a prefix UEFI: "name of your device", and show as a boot option in your UEFI.
After booting to the UEFI device you see the Install Windows 7 screen, press Shift + F10 to open a command prompt.
Type Diskpart, press Enter.
Type List Disk , press Enter.
Type Select Disk # (where # is the number your drive shows up as), press Enter.
Type Clean, press Enter.
Type Convert GPT, press Enter.
Type Exit, press Enter.
Close the Command Prompt window.
Click the "Next" button.
Click the "Install now" button.
Accept the terms and click the "Next" button.
Choose "Custom: Install Windows only (advanced)."
Select the partition and click "Drive options (advanced)"
Click "New" and then click the "Apply" button. Three partitions should appear. Click the bottom partition.
Click the "OK" button and then click the "Next" button.
From then on follow the on screen instructions till you get to the desktop.
Note: If you can't boot after the install you need to make sure the boot is set to "Windows Boot Manager" in the UEFI. Also, important info.
Booting and partitioning of GPT for Windows 7 Automatically:
Boot from the Windows 7 install media (You must initiate this boot from a device labeled as a UEFI device, or the installation of Windows 8 will produce an error that the OS cannot be installed to a GPT partition) These UEFI boot devices will have a prefix UEFI: "name of your device", and show as a boot option in your UEFI.
After booting to the UEFI device you see the Install Windows 7 screen, press Shift + F10 to open a command prompt.
Type Diskpart, press Enter.
Type List Disk , press Enter.
Type Select Disk # (where # is the number your drive shows up as), press Enter.
Type Clean, press Enter.
Type Convert GPT, press Enter.
Type Exit, press Enter.
Close the Command Prompt window.
Click the "Next" button.
Click the "Install now" button.
Accept the terms and click the "Next" button.
Choose "Custom: Install Windows only (advanced)."
Select the partition and click "Drive options (advanced)"
Click "New" and then click the "Apply" button. Three partitions should appear. Click the bottom partition.
Click the "OK" button and then click the "Next" button.
From then on follow the on screen instructions till you get to the desktop.
Note: If you can't boot after the install you need to make sure the boot is set to "Windows Boot Manager" in the UEFI. Also, important info.
Booting and partitioning of GPT for Windows 7 Manually:
Boot from the Windows 7 install media (You must initiate this boot from a device labeled as a UEFI device, or the installation of Windows 8 will produce an error that the OS cannot be installed to a GPT partition) These UEFI boot devices will have a prefix UEFI: "name of your device", and show as a boot option in your UEFI.
After booting to the UEFI device you see the Install Windows 7 screen, press Shift + F10 to open a command prompt.
Type Diskpart, press Enter.
Type List Disk , press Enter.
Type Select Disk # (where # is the number your drive shows up as), press Enter.
Type Clean, press Enter.
Type Convert GPT, press Enter.
Type Create Partition EFI Size=100, press Enter.
Type Format Quick FS=FAT32, press Enter.
Type Create Partition MSR Size=128, press Enter.
Type Create Partition Primary, press Enter.
Type Active, press Enter.
Type Format Quick FS=NTFS, press Enter.
Type Exit, press Enter.
Close the Command Prompt window.
Click the "Next" button.
Click the "Install now" button.
Accept the terms and click the "Next" button.
Choose "Custom: Install Windows only (advanced)."
Three partitions should appear. Click the bottom partition.
Click the "Next" button.
From then on follow the on screen instructions till you get to the desktop.
Note: If you can't boot after the install you need to make sure the boot is set to "Windows Boot Manager" in the UEFI. Also, important info.
then just install it as normal.
You also should do optimisations to speed it up.
1.Turn Off or Shrink the Hibernation File:
2.Disable or Shrink System Protection
3.Turn off drive indexing:
4.Turn Off or Shrink Page file
5.Install Motherboard Drivers:
6.Install newest SATA and chipset drivers
7.Change power options
8.Check to see if the TRIM command is being issued
9.Check Defragmentation schedule
10.Disable Prefetch and Superfetch
11.Disable unneeded services
12.Enable windows write back caching and turnoff windows write-caching buffer flushing on C:\ drive
13.Speed up Shut down time:
All can be found here
http://www.overclock.net/t/1156654/seans-windows-7-install-optimization-guide-for-ssds-hdds