A 4 gig card might work better cause the 2 gig flash card is not going to be a full 2 gigs. Just like all hard drives it suffers from the same genius which plauges all writable media. It won't be a full 2 gigs. You might not even be able to fit osx on there at least maybe not Tiger. Even if you were able to it might choke with a swapfile. I say this cause my 2 gig Nano is only 1.7 gigs. I had a good install of Tiger running on my G4 Cube with only a 4 gig hdd, that would give a decent bit for the swapfile too.

my two cents
smile
macdeviant
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2.4gHz 15" MacBook Pro, 1.66gHz Core Duo Mac Mini, 2.5gHz G5 QUAD, 733mHz Quicksilver, 450mHz G4 Cube, 700mHz G3 iBook, 350mHz Sawtooth G4, 350mHz Revs. A and B B&W G3, 16mHz Powerbook 100, 8mHz Macitosh Classic.