Quote from: crazyates on September 21, 2013, 04:26:02 PM

Just wanted to bring back this thread for a quick question:

C:\Users\MYUSER\AppData\Roaming\Bitcoin is 19.2GB. http://blockchain.info/charts/blocks-size says it should be under 10GB. How do I figure out what's unnecessary, and delete the extra files? Thanks.

This question often comes up. I thought the reason was the old blk000x.dat files remaining from the pre-0.7.8 (not sure) version, and which can be safely erased - but it would be nice if a developer here could confirm and explain.

Edit: Here is a relevant quote from deepceleron:

Quote from: deepceleron on May 01, 2013, 02:02:53 PM

You can remove blk0001.dat, blk0002.dat, blk0003.dat and blkindex.dat from the root data directory after a reindex is complete and you are caught up with the blockchain (and you don't plan on going back to an older version). Only blkindex should actually be using disk space, as the old BLK000x data are moved upon upgrade, and the blk000x.dat files you see there are hardlinks (shortcuts) on any filesystem that supports hardlinking.
...
The new database for v0.8.0+ is stored in two subdirectories, "blocks" (block data, with block id database in "blocks/index"), and "chainstate" (unspent output database). Do not mess with files in these subdirectories.