If I have corrupted DAG file, how can I delete it? Can't find it in the normal place.
The DAG is built on the GPUs with Claymore.
I would reboot if you have a message from Claymore about a corrupted DAG file. ( I am not familiar with such an error message ).
Apparently the DAG file is stored here: ~/.ethash, but I cant seem to 'cd' there to delete it. The message was from dwarfpool, not Claymore.
My first guess is that; you're mining a different Ethash coin than the one expected with dwarfpool: ie ETC on an ETH pool or ETH on a EXP pool.
If this is correct; it is most likely due to using the wrong port for the coin of your choice.