G4 (10.4.11) won't boot from disk and won't safe boot

I lost the items from the bottom half of my finder sidebar list on my G4 running under 10.4.11. The instructions to correct this problem that I found include safe booting (holding down shift after startup tone). However, this just doesn't happen (left with spinning gear for minutes). I tried to boot from two different disks (DiskWarrior and Apple's Hardware Test - holding down C at startup), but with the same result... a spinning gear.
I can still boot the computer as normal and it still works, but there is obviously something not right.
Anyone recognise these peculiarities?
Thanks,
Lee

Lee:
I always shut down my Mac when not in use and some times I will restart when an application slows down. When you load applications they most always require restart. When the monitor freezes on some glitch the first maintenance recommended is to restart or shut down for a couple of minutes. Your Mac will respond much better. sometimes to many application may be open at once. I sometimes forget that I've opened an application and forget to close it. Keep it lean and plenty of free disk space on your OS Volume (hard drive) for Virtual Memory your Mac uses it often for temp storage. I have two backup Firewire hard drives that I keep most important data. I try to keep all applications on my OS Volume and only data that I use every day and I always backup when I complete my up date.
Dick. D
Message was edited by: Dick Deaton

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