I have 32-bit Windows XP installed on two HDDs in Raid 1. My end goal is to install 64-bit Windows 7 (to increase RAM to 8GB) on a single SSD drive and use the 2 HDDs (maintaining Raid 1) for user files. I would prefer not to format the Raid 1 drives, keeping all the documents contained in 'My Documents'. I'm not sure of the workflow. Every install I've done has been on new hardware.
I'm thinking I would need to disconnect the HDDs, install cleanly on the SSD, and then reconnect HDDs after, but will the MBR on the HDDs cause problems? Should I keep the HDDs connected, or will that force me into a dual-boot setup, which I don't want. Almost every search result I've done has pointed me to dual-boot scenarios. Any thoughts?