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RootKit ZeroAccess.  Hidden partition question.

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Last Modified: 2016-11-23
I Just removed ZeroAccess RootKit from a Dell Dimension using ComboFix.

Some research while CF was doing it's thing disclosed that ZA creates new partitions hidden from the user in which to hid itself.  I booted the machine with Partition Commander, and it displayed the disk as follows:

A gray sliver at the top:  7 MB,  gray = Free

Most of the cylinder Maroon (= NTFS)  74.47 GB

A Blue sliver at the bottom (= Other, unix etc) 31 MB

Overall size of Drive 0 displayed at 74.5

Since the displayed size is close to 80 I'm asusming it's an 80 GB HDD.

If there is a hidden partition, it it the difference between 80 and 74.5 GB?

What might the Blue (= other) 31 MB sliver be?
Could it be related to Windows Recovery or is it too small to be that?
 Should I just remove it?

Is there anything I can do to discern whether there is a new hidden partition that is harboring the RootKit?
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