Read only directory:
After making partitions manually to keep my files, I didn't change the file system of my disk. After the successful completion of Linux installation I can to know that using drive with filesystem Nfts is read-only i.e. you can only read files in that directory, you couldn't delete the file or paste any other file in that directory . After searching on google I found that solution.

Enter the command in terminal

sudo ntfsfix /dev/sdXY

sdXy is your drive name to find your drive name enter the command df in terminal