The problem which I faced is the same as the one given below:
I bought a new HP laptop which came with 4 partitions all of which are Primary partitions. The c: drive came with a massive 445GB. But I do not want to use the same partition for all my needs so i was thinking of creating another two partitions. So i shrunk c: from the Disk Management leaving 320GB Unallocated space for usage. But when I tried to create a partition from I got the "changing to Dynamic disk" warning. Basically it's similar to the problem faced by the other person in the link posted above.
So I followed the post #8n by "Bare Foot Kid" and it went fine, the restarting and all till I tried creating a new volume. See the screenshots below:
BTW, I have no idea how it happened but Q: suddenly popped out of nowhere after the "max partitions error".
HDD Q problem
So now I'm clueless. :/