Cheers, please don't laugh to my stupidity. I need some extra space on my SSD and firstly checked what takes the most of the space. Almost at the top were files under Ethereum Chaindata. I stupidly went in and deleted most off them...as I thought they were history, which don't really matter. Well, I can't sync my Wallet anymore. Please help. Thanks a lot.

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    "...deleted most off them". If you've partly deleted the chaindata, then it's likely that you've left the database in an unsane state. The best thing to do would be to delete the remnants and start again from scratch. (Before you do anything else, make sure you have a backup of your keystore files!) Feb 18, 2017 at 17:49
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    @RichardHorrocks got it right: PLEASE backup your keystore. Feb 18, 2017 at 18:03

1 Answer 1


Just delete the chaindata, and do a sync again, this time with the --fast option. It will use less space.

EDIT: And please, make a backup of the keystore! As a fellow poster wrote above!


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