Yes, getting access to the HPFS OS/2 volume is a problem. If you know Linux at all, a live Debian based Linux should allow mounting the HPFS volume read and write and could copy the files there. Only have to replace the files. Otherwise you need a way to boot OS/2, a newer live CD, floppies or such. Today ArcaOS allows booting off a USB stick or DVD to a maintenance desktop but ArcaOS costs money. Not sure if a convenience pack CD (Warp 4.52) would work, there are ISO's easily available.
Looking at your first posts trp screen, you have an ancient kernel too which may never work on a C2D processor and if working may be unstable so you will have to apply fixpaks if you get the system booting.
Can you boot from floppy?