I dual boot my laptop between 64 bit Ubuntu (10.10) Linux and 32 bit Windows XP. I would like to use whole disk encryption to encrypt all partitions of my laptop and still have the ability to dual boot between these two OS's. If I install PGP on my windows and Linux partitions before doing whole disk encryption will it be possible use both OS's?

Please not that I searched online but found that the information available is fairly old (dating to a time when the commercial PGP software only supported Windows).