Thank you for the response.
ext 4 is sdb6 which is already shown by rootdelay = 2 root = / dev/mmcblk1p6, so maybe that's not the problem.
I tried it again and I am stuck on the same screen, I can not turn the phone off, I have to wait a few hours for the phone to completely discharge out of battery then charge it again to turn the phone on again and use WinMobile.
Just to clarify step 12, 'Right-click on "ext4" and "remove" the partition'. There is only an option called 'dismount', I presumed that this is what you meant by 'remove'?
Also, I noticed that on step 21 this is the image on the guide:
In this image, on the highlighted part, is the first number '4'? Because for me on the previous step it is 4 but on this step it changes to 8 for me. Is this of any relevance?