Both of you, that seem to be a specific problem with your disk itself than with Solus.
Use a tool like
(So for @ceritoglu, connect your drive, make sure it isn't mounted
which I'm fairly certain it isn't due to the error and run
sudo fsck -p /dev/sda1)
Or, use either
partitionmanager for example to repair it via an app. Both are fairly easy to use for that. Right-click on your drive partition, and click repair.