hi,
I am facing a problem. pls help.
when i open my model that i worked on the other day and is already in sub-d level 2, when i try to divide it, it says that i can’t and that i need to go to a lower sub-d level for that. When i go to a lower sub-d level and then divide it says that i need to be in a higher sub-d level to full division. I am confused.
pls clarify wht this problem is. It’s a little urgent.
thanks in advance.
have u looked if some mask is on very small or invisible?
Try clearing the mask anyways and hitting subdivide again 
The message actually says it can only be partially divided at level one. When any portion of the model is masked or hidden, that tells ZBrush to only divide the unmasked/visible portions. This is something that can only be done at level one, which is why you get that message.
As Disco Stu said, clear any masks that are on your model. But also make sure that no portions of it are hidden. You will then be able to divide it to higher levels just fine.
many thanks Disco stu and aurick. I will try it at home tonight 