You can also install only the recommended updates with: The use of sudo is required to get superuser privileges to actually install the updates. You can then install all available software updates with the following command: You will see a list of available updates. To get a list of available software updates, type the following command: To repair the drive, you can issue the following command into Terminal:ĭiskutil repairvolume /Volumes/BackupStuff/ If, however, you get an error like “The volume Macintosh HD was found corrupt and needs to be repaired,” then you can repair the drive using diskutil as well. If you see no messages, then you can assume that diskutil hasn’t found any errors, and you can move on. So for an external drive named “BackupStuff” you would enter:ĭiskutil verifyvolume /Volumes/BackupStuff/ Or, if you have an external drive attached, you can type or paste in the following:ĭiskutil verifyvolume /Volumes// So, for your main hard drive, you could type or paste in something like: Once launched, type or paste in the following command. Launch Terminal from your Dock, Utilities folder, or via an app launcher like Alfred. If you are still experiencing problems with your external drive, look for a possible solution in this article, in which we describe the most frequent issues when using external drives.Verify and Repair Disk Permissions via Terminal (Mac OS X)ĭiskutil repairPermissions / Verify and Repair Volume via Terminal (Mac OS X) When complete, the external drive or USB flash key will be empty, fully compatible with Mac OS, and ready for work.

The duration of the process depends on the size of the drive and the amount of data contained in it. Click the Erase button to confirm the formatting process. In the second line, enter your drive name or leave it unchanged.Ħ.

We recommend Mac OS Extended (Journaled).ĥ. In the pop-up window, choose a format from the drop-down menu. Find your drive in the left sidebar of the Disk Utilities window, select it, and click the Erase button.Ĥ. Launch Disk Utility using Spotlight search.ģ. Once you have the copy, follow the guide below.Ģ. Note: before you start formatting, remember that all data from the drive will be erased, so ensure you have made a copy of your data. How to format an external drive using disk utility?įormatting an external hard drive or USB flash key is straightforward. Combo Cleaner is owned and operated by Rcs Lt, the parent company of read more. You will need to purchase the full version to remove infections and eliminate computer errors. It is recommended to run a free scan with Combo Cleaner - a tool to detect malware and fix computer errors.

Disk utility mac external hard drive