Ok here's a newb question, I did a search but didn't find anything relevant to the D3000 (some stuff in the D600 forum)
I had a 64GB SDXC card sitting around so I thought I'd use that in my D3000 when I got it, however after formatting the card it said the card was full. When plugged into the SD card on my Microsoft Surface it showed up as Nikon D3000 and had 50something GB free as expected.
I finally gave up on this and got a 16GB SDHC card form WalMart and it works fine.
Is the SDXC the problem, or is there something else going on with that card? Also that was a microSD with an adapter, so I wasn't sure if the XC format or the adapter was the problem.
#1. "RE: SDXC not compatible with D3000?" In response to Reply # 0
SDXC requires a new file system to support it, ExFAT, so, yes, support must be added in camera firmware for it and the D3000 lacks it.
This is unlike the SD to SDHC transition, where they both used FAT32, and so some SD cameras could use SDHC without issue - there is going to be an issue jumping to SDXC unless it's explicitly supported.