Cloned an external FireWire 400 HD to a 32 GB CompactFlash card in a FireWire 400 card reader. Now the stubborn G3 Pismo 500 MHz PowerBook which has a faulty internal HD interface can boot from something reasonably compact. And bus-powered as well. The ext HD needed external power which made things rather more complicated.
Unfortunately, the CF reader is too fat to fit inside under the keyboard, unlike an earlier version by the same manufacturer. But at least it works. it's not a fast CF card, only 50X but it's perfectly fine as the boot drive for an elderly Mac.
Just downloaded & installed TenFourFox 38.7,0 (G3) which is the latest iteration of that modernised browser for PPC Macs. Used the aforementioned combination to make this post.