Z170-HD3P-CF How to change boot drive permanently

[andyz]

Hi, I have a Z170-HD3P-CF and have just installed a Samsung EVO M.2 drive which I'd like to be my primary system drive.
I successfully formatted the new drive and cloned it (from my existing SSD) using Samsung's data migration tool.

I can change the BIOS to boot from this drive but after restarting it always goes back to booting from my old drive.
Could someone please tell me how to change the setup to make the new drive the boot drive?

I have the latest BIOS (as I know that's usually the first thing to check)

Thanks in advance
Andy

[shadowsports]

Greetings,
After changing the boot order in BIOS and booting successfully from the m.2 drive, you have two options.

You can format the old drive using Disk Management

or

Use diskpart from a administrative command prompt to clean and convert the disk to GPT format.

GPT is preferred to MBR, but it won't hurt to leave your boot drive MBR if that's how it was originally installed.

[andyz]

I managed to solve this, it was my fault - I didn't realise that making the new drive the primary one, it would automatically get renamed as the C drive.
All ok now.

[shadowsports]

I managed to solve this, it was my fault - I didn't realize that making the new drive the primary one, it would automatically get renamed as the C drive.
All ok now.

That's correct.  Your boot.ini now "BCD" in windows 10 would be confused if it had a listing for 2 C:\ partitions to boot from.

Changing the drive letter is one option.  Performing the format or using diskpart and converting to GPT format is another.   Glad you got it solved.