Answer:
Mac OS X : Good Luck... kidding, Disk Utility
Windows: Disk Management, MiniTool Partition Wizard, command line (chckdsk, diskpart)
Linux: G parted (preferred), Disk Usage Analyzer, Disks, Startup Disk Creator, Terminal Commands (fdisk, df, sudo fsck, sudo mount/umount)
Step-by-step explanation:
Not really any explanation for this one, if you don't have experience with these tools, you'll just have to search for them.