I have a hard drive that allows me to initialize it and load system 8.0 on it. I can boot from it, and use all teh software in it. Then, after a while (could be minutes, or days) it gives me an error type -127 with an unable to access message. Don't know what triggers it, have another 3 drives, all working fine. came loaded with system 7.6. is a 540 MB IBM HD, with the Apple logo. Apple utilities software shows the HD not mounted.
I would like to know what is going on, and if there is a way to take care of this problem.