Revisiting your provided picture, something occured to me:
Your harddrive is not internal, but this Overdrive external connected to the PCMCIA slot!
That explaines the CC0 has 29kB in size, as the plug contains a "fake disk" with the driver.
Some of those Overdrives required an adapter to the floppy port for stealing 12V to supply the usually big harddisk. Do you have this too?
I guess the hd is indeed near death. If you really need the data on this drive you should get an adapter of some sort to create an image of it before try and rescue files.
As a replacement you would need a cheap CF card adapter and a small (1-4 GByte for example) industrial CF card that would fit internally. It will be a little bit slower than the external one but delivers more comfort. Just make sure you pick a compatible CF card.