In the last few days, my recapped and perfectly working SE/30... seems not to recognize its internal Hard Disk - floppy disk icon with question mark blinking appears at start up - and doesn't boot even if HD is spinning and HD light is blinking.
It can boot with floppy disk; for example with System 7 Disk 1 Installer, but then even the Installer doesn't see internal HD... After some restart, Mac boots normally and everything seems ok, even turning it off for a couple of minutes and restarting it. But if I leave it turned off for more time, i.e. some hours, the problem appears again.
I remove clock battery, reset PRAM and re-install OS, but the problem still persists...
Do you have any ideas? In your opinion, should it be an HD problem or maybe something else?
Thank you