I am sort of new on linux environment. So I had dual booted my laptop.
Now I can copy paste files on windows partitioned drives and the drives I had partitioned while installing the kubuntu. I did kept some free space, and partitioned that while in the OS. This new one was done in Kubuntu Partition Manager. And I am not getting any permission to create file/ folder, or even copy paste. . .
Added Note, Already saw the post Read-only partition, dual boot WIn10, and it did not help. Would appreciate your help. Terminal is giving me Refusing to operate on read-write mounted device /dev/sdb9.
I came to know about this problem, when i was trying set a Steam Library in Kubuntu.

fsckor file-system check & correction it'll stop flipping to RO. You provided no detail that allows us to know what your actual issue is (could be permissions, or other causes too...) – guiverc Mar 11 '20 at 23:08fscka mounted drive. The easiest way tofsckit to boot a 'live' system (such as Ubuntu install media using the "Try Ubuntu") so your hdd/ssd isn't in use, andfsckfrom there. Please don't provide detail via command, edit your question and place detail there, but do notfscka mounted fs,umountfirst (when it's not in use) – guiverc Mar 11 '20 at 23:29mountcommand? Want to confirm if /media/battleseeker_rex/Steam is mounted in read only mode. – ignite Mar 12 '20 at 15:26