Bitcoin synchronized approximately on 60% and today in the morning I saw this error: "Error: a fatal error occured (see details in the debug.log)". Here's my debug log: debug log Kindly help me to solve this problem.

error's screenshot

Bitcoin was installed on DataD. But I also see Bitcoin folder on Sys C. Today in the morning there really was lack of space on Sys C. I cleaned some space, and you can see the screenshots - free space underlined in green, the capacity of disks - in blue. data d sys c So when there was 3Gb free space on Sys C, everything worked. Now I have the same error. Kindly tell me what else it's possible to do? 60% synchronization it's not everything, but a lot of time was spent on it.

1 Answer 1


This is the critical error:

2018-01-07 10:22:45 ERROR: ReadBlockFromDisk: Deserialize or I/O error - CAutoFile::read: fread failed at CBlockDiskPos(nFile=693, nPos=38137925)
2018-01-07 10:22:57 *** Failed to read block

I would 1st check if you have run out of disk space?

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