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Figure 6 Unsupported Virtual Network Device
Hard Drive Layout
A VA is located on its own hard drive partition, called the Service OS partition, to isolate it from the Client
operating system. Since the VA is an isolated entity that does not require COS interaction, it is much more
resistant to malicious software.
HP Compaq dc7700p and dc7800p Business PCs have a 102MB SOS partition at the end of the hard
drive. This partition is empty and is of type 72h. Once a VA is installed, the partition will become type
71h. The VA loaded in the SOS partition will be in a single binary image.
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