Thanks for your help.

Eventually it all went to plan! I kept it as a Standard disk in the end. Commands and method are below.

diskpart

Microsoft DiskPart version 6.1.7601

Copyright (C)...

thank you Perry you've been really helpful.

Results for disk 6 are:

wmic partition get BlockSize, StartingOffset, Name, Index, type, primarypartition

512 0 ...

No I don't, and to be honest I don't know why there are partitions, or their purpose, they aren't visible to the user.

Thanks Perry, I'll try that and see how it goes.