I've discovered that while you can read the data on the memory stick that is the brains of the Aibo, you should be careful.

I think I've managed to screw up my Aibo Life memory stick, by putting it in a USB memory stick reader. It seems to be readable - I see it as a removable 'drive' on my Windows 98 machine. I can also browse the contents in Explorer. But having said this, I've also now tried to put the damn thing back in my Aibo and the darn thing won't 'boot' any more. It just makes a series of unhappy beeps and turns itself off. I suspect some sort of copy protection scheme.