macOS (APFS) and bootcamp partitions no longer mount

I recently applied two updates to my Windows 7 system (system is kept up to date regularly). They were applied following a shutdown. When I rebooted a short time later, the system started from my High Sierra backup drive. My primary macOS (High Sierra, APFS) and Windows 7 partitions configured on a hardware RAID drive (Velocity x2) did not appear in the Finder.

I ran diskutil list in a terminal window and got the following results:

The RAID is 500GB total created from two 250GB Samsung SSDs (disk5). It is encouraging to see two partitions showing up in the terminal window, although the APFS volume shows as HFS.

I wanted to post here before I make any recovery attempt. Another user suggested booting into Parted Magic. The Partition Editor has an option to scan but I'm concerned that it might do more than read and report. Although the Windows bootcamp partition is actually more important to me right now, I would like to get back the APFS partition also if possible.

Hopefully this is something simple for those skilled using the terminal window.

Good to see that Loner T is still active here. 🙂

My system is a 2009 MacPro.