iMac g4 boot problem

[Joe Nosay]

My apologies beforehand; but, this is the only place where such  questions
may be answered.
1. Using the prompts in Open Firmware, booting from a usb flash drive does
not seem to work.
2. We moved the iMac g4 after resetting the password; and, the system will
not boot the native OSX.
3. "fsck -fy" returns a SIGNAL 8 error.

I'm limited in my tools because I am at a friends' house. There are no
computers with either a BSD or Linux installation.

I see that it is a floating point exception.


In either Open Firmware or single user mode,are there any commands that
would fix the current problem?

Thanks in advance for any assistance.