... I'm smiling coz of the 68LC040 reference and the "may not work". The PB 190 runs 7.5.x to 8.1, so 8.0 should work just fine. The 68LC040 processor wasn't "strange", it just doesn't have that math coprocessor thingie. It should boot that disk just fine. But: You'll want a full installation package for that PowerBook, not just an emergency boot disk. Might find OS 8 installation disks on eBay. Or: Just go to an Apple dealer and kindly ask for the original system disks. Also: You'll find System 7.5.3 for free on the net somewhere and can update that for free to 7.5.5.
1.1.6 - How can I get an OS on a Mac using only my PC? It's reasonably common that someone gets an old used Mac and it has no operating system on it. Often, these people don't have anything other than a PC to access the Internet. As long as your Mac is an SE FDHD or Mac IIx or higher, you can use these directions compiled by Alex Harrington (aka "fastkeys") to get that Mac up and running. Due to irreconcilable physical differences in the floppy drives of PCs and Macs, a Mac 128, 512, Plus, original SE, or un-upgraded II cannot use this procedure. If you have one of these, you'll need to get a Mac that can read PC floppies or find someone willing to make floppies for you.
You'll need your PC (running Win 9x or NT), some error-free 1.4MB floppies, and a good deal of patience. Download the following: (continued on link)