Friday, May 17, 2019

How to install Windows 10 on Asus TP500LB laptop

After encountering intermittent blue screen problems on my laptop, I decided to take the plunge, and re-install the entire operating system.

So I happily plugged in my external DVD writer, insert the Windows 10 DVD and pressed F2 to enter BIOS and boot from DVD. Everything went well, Windows installer asked which partition I wish to install to. I selected the largest partition, but it failed with some mysterious error code. There was a link at the bottom of the screen which I clicked on and it says:

"Windows is unable to install to this partition which is a GPT partition"

I had already booted up as UEFI by ensuring BIOS CSM is disabled, Secure boot is disabled and selected the Boot sequence to choose UEFI-DVD-Matsushita.

So, even though I had booted into UEFI, yet it refuses to install to a GPT partition. Doesn't make sense, yes?

So, after trying for 8 hours, I had no alternative but to convert the GPT to MBR using the command line provided by the Installer.

So, when booting again into the installer, I select Repair PC. In the next screen, I select other options and then chose cmd. In the cmd terminal, I typed:

diskpart
list disk        [ you will see one partition with label gpt ]
select disk 0  [ it could be 1 or others depending on what you see above ]
clean
convert mbr

Then, reboot to BIOS and set as follows:


Fig 1. Change to DVD device

In Fig 1 above, make sure you change to the DVD device. On my bios it is listed as DVD-ram. Also, if there is Fast Boot, be sure to disable it. And make sure you enable Launch CSM.



Fig 2. Selecting Secure Boot



Fig 3. Disabling Secure boot

In Fig 2, above select the Secure boot link. Then in Fig 3, disable it.

Upon installing Windows 10 Pro, I found that it is already automatically activated. 





Reference:
https://neosmart.net/wiki/convert-gpt-to-mbr/