Windows 8.1 UEFI USB Install
What is UEFI?
UEFI (Unified Extensible Firmware Interface) is a standard firmware interface for PCs, designed to replace BIOS (basic input/output system). This standard was created by over 140 technology companies as part of the UEFI consortium, including Microsoft. Source windows.microsoft.com/en-us/windows-8/what-uefi
If you want to read in detail read at Wikipedia.
Long story short UEFI has faster boot time, more options, uses GPT (GUID Partition Table) which has solved the problem of 4 primary partitions limit with MBR and bootable disk size limit of 2.2 TB.
Ever wonder why MACs boot up so fast? That’s the reason behind their fast boot up they have been using UEFI for years.
How to check if you are already setup on UEFI.
Click start type msinfo32 and press enter. A window similar to this one will appear just look for the BIOS Mode.
Windows 8.1 UEFI USB Install step by step procedure.
1. At least 8GB USB Flash Drive
2. Windows Installation legitimate ISO file
4. Backup Your Data. Since this is a guide to fresh install it is highly recommended to backup your data.
If you are already using UEFI then your old files on windows partition will be moved to windows.old. Otherwise if you wish to format your system partition then it is essential to first backup your data.
If you are using BIOS then for UEFI you would need to delete all MBR partitions form your Disk and repartition to GPT style. Therefore backup your data 🙂
Now the procedure on how to install:
A. Launch Rufus with admin privileges and set it up as show below.
1. Select GPT Partition Scheme for UEFI in Partition scheme and target system type.
2. Select Fat32 as File system.
3. Quick Format (Do backup your Flash Drive)
4. Select Windows 8.1 ISO file by clicking the CD Drive Icon.
Click Start and relax; it will take some time 🙂
B. Make sure UEFI is enabled in your BIOS. Different manufacturers have different BIOS setup; consult you hardware specific guide on how to enable UEFI.
Usually it is located under BOOT or System Configurations.
C. Plug in your USB Flash Drive and press Boot options system specific key. For HP it’s F9 and for Dell it’s F12. Click on this link to see a list of Boot and BIOS Setup keys from different manufacturers. You will see you USB Flash Drive listed along with UEFI stated with it. Most vendors do state UEFI but some don’t. Select your USB Drive and press Enter.
D. From this point onward everything is same; as usual windows installation, if your system was already setup on UEFI.
For user who are converting from BIOS to UEFI for them there are few more steps when they reach “Where do you want to install Windows?”, as follows:
1. Delete all your partitions
2. Create new primary partition. Setup will make 3 more partitions for Windows to operate properly. Your partition table may look like as follows.
3. Select your Primary partition and click next. That’s it remaining process is same.
Hope this helps…:)