Basically, if you are using the kind of RAID built into most normal PC motherboards, don't.
These kinds of fake RAID depend entirely on a Windows driver to understand how it work. Most do not support Linux, except some intel/nvidia chipsets.
When you attempt to install Linux, it will either see 2 separate hard drives or it will try to use the dmraid module to provide support. dmraid does not support all chipsets and implementations & the results are either it will work perfectly or it will break somehow.
According to this link
. Ubuntu will automatically use dmraid to try supporting the fake RAID (In this case so should Mint). I'm not sure how well Mint/Ubuntu handles dmraid or how much tweaking may be necessary if the automatic way doesn't work, but It's all too much trouble than it's worth, it's finicky & will not be very robust.