I remember this being a key troubleshooting step. Listen/feel for the hum of the hard drive OR the telltale click clack, grinding, etc that foretold doom.
Somehow the 750MB HDD from 1996 is still working, but I admit that the crunch and rumble of HDDs is a nostalgia I'm happy to leave in the past.
My 1.67 PowerBook G4 screams with a 256GB mSATA SSD-IDE adapter. Until you start compiling code or web surfing, it still feels like a pretty modern machine. I kind of wish I didn't try the same upgrade on a iBook G3, though...
Oh god. Those were the worst things ever to upgrade the hard drive. Just reading this gave me a nightmare flashback to having to keep track of all the different screws. This is why my vintage G3 machine is a Pismo instead of an iBook.
It doesn't help that I'm not a great laptop repair tech as is, but wow are those iBooks terrible. The AlBook was fine, and the Unibody MacBooks just a few years later had the HDD next to the battery under a tool-less latch.
Might still be worth doing for someone into older computers, I've considered putting a few of my old computers on the free pile at a VCF!
Would those be bandwidth limited by the adapter/card or CPU? Can you get throughput higher than say, a cheap 2.5" SSD over Sata 3/4?
For the ones new enough to get an SSD upgrade, it's night and day the difference (even a Power Mac G4 can feel fresh and fast just swapping out the drive). For older Macs like PowerBooks and classic Macs, there are so many SD/CF card to IDE/SCSI/etc. adapters now, they also get a significant boost.
But part of the nostalgia of sitting there listening to the rumble of the little hard drive is gone.