Well technically it's not just today. But it made me smile about my own stupidity, so hear me out.
I got an CF to IDE adapter, it came in last tuesday. I didn't have a CF card, so yesterday I went out to find one.
Nothing in the thrift store, nothing in a camera shop, but there is this small computer shop whith a very friendly fellow and his wife running the shop and they have never let me down.
So I went there and he was like: "CF card? Yes, I bought a bunch a few years ago...should be somewhere around here..." His wife rummages around and finds ten of them, all new and all 2GB.
Awesome, so I bought one, asked him to never throw those away and went home.
I had noticed my adapter was for 2.5" , however, I knew I had an adapter to 3,5" in my box of stuff. So far so good!
Tested the CF card on my main pc: works fine. So let's hook it up to the P2B and see what happens!
Oh wait... what's this? My CF adapter has less pins then my 2,5" to 3,5" adapter? Well, let's just make sure pin1 goes to pin1 and who knows, right?
Well, obviously, that doesn't work. Lesson learned, I need a 2,5" 40 pin to 3,5" 44 pin adapter. Luckily, I could order one that came in today, so hurray for modern times!
Mail man came by, unpacked the adapter, connected everything, anticipation.... nothing. Autodetect says no.
Checked master - slave, connected it the other way around, still nothing.
Went on vogons, searched and found things about HD Block mode, so fiddled with that: nothing.
Connect the CF adapter with a 'single' band connector (so no master - slave): nothing.
Searched some more, fiddled some more... nothing.
And then it hit me:
The card was upside down.
Works like a charm, and I had a good laugh about it.