Formatting, Erasing, Verifying, and Repairing Disks
For help and detailed instructions with the following:
- Formatting, reformatting, and erasing disks or partitions
- Partitioning a disk
- Verifying or repairing Permissions on an OSX drive or partition
- Verifying or repairing the File System on a disk or partition
- Disk formats
- Checking the S.M.A.R.T. status of a disk
Please see the following site: Using Disk Utility