Clean install w10 from w8

AddRAM said:

Because it sounds like you are trying to boot normally and you are not booting in UEFI, if your disk is GPT then you have to boot UEFI.

Use the boot menu to bring up your boot options, do you see a UEFI option for your USB stick ? or dvd ? Whatever you're trying to use.

That`s what you have to choose.

And I think you need to delete all the partitions except for your data partition so the installer can create the partitions it needs to. DON'T delete your data partition.


Navy already said this in reply # 3


The only thing I disagree with (and I say this loosely) is that you shouldn't have to make any changes in the Bios other then maybe secure boot (disable it)

If your W8 install was UEFI/GPT then you should not have to make any changes to the Bios.

Ok sure i'll try booting from Boot menu once again as I tried last night using boot menu and selecting DVD it was still giving me - Windows cannot be installed to this disk. The selected disk is of the GPT partition style." error

AddRAM said:

You have to choose UEFI dvd, not DVD, you should see 2 selections.

This is just an example of a usb stick, but you can see the 2 choices.

ok thank you so much for the detailed screenshot, I'll give it a try once I reach home in couple of hours..

Hi again,
Below are the attached Images of the process that I'm following..
So if I go in bios and select uefi and save the settings, my pc constantly restarts without reading the disc and attempting a repair (which is Impossible ofcourse as there is no os in the system) when the change the settings back to legacy support then I can go in boot menu and select the options as I'm using DVD to Install so I selected DVD option (I dint noticed UEFI there as you can see in the attachment) it takes me to the installation guide, tells me to select 64bit or 32bit, I selected 64 bit as per my system conf. And then it asked me for partition( shows me 7 partitions in total) but cant select any as it says the disk is in GPT format. Also there is no problem with the disk as my friend used the same disk on his brand new laptop, he never got this error but as I already have an os Installed, it is showing this error..

Ken, my laptop is G50-45 80E300GYIN with AMD A8-6410 processor Clocked at 2GHZ 4gb ddr3 /500gb sata 2gb graphics with DOS which I upgraded to w8 with zero issues but now I'm stuck and I purchased this online about 2 years ago

AddRAM said:

Once you understand the UEFI Boot/GPT Disk......... Legacy Boot/MBR Disk concept it'll all make sense :)

Keep us posted on your progress.

With boot mode set to UEFI, move the SATA ODD to the top of the priority list, before the HDD. If you get setup going that way, when the computer restarts during the setup process, just remove the DVD and reboot the computer and setup will continue from the hard drive.