All of the digital photos, music files, videos, and documents that you create are stored on your hard drives. Disk Utility can be beneficial in a number of ways.
You might just be interested in gaining more insight into your hard disk or storage devices, and the tool will show you some statistics on how your drives are being used. Partitioning your drive is a good way to organize things and segregate certain files and applications, forcing them to use a different logical drive than the operating system.
Disk Utility is also a disk repair tool. Using the First Aid option, you can address problems with your hard drive and potentially repair a damaged or corrupted disk. First, you have to start the utility. Upon opening Disk Utility you are presented with a view of the drives that are currently attached to your system. Internal and external drives are listed separately. The View drop-down in the top left corner lets you view all devices or just the logical volumes.
How to Repair a Mac Boot Disk with Disk Utility in Mac OS X
Select a volume or device by clicking on it to obtain information about your selection. You will see the currently used and free space on the disk as well as its capacity, mount point, type of drive, and the file system used on the disk.
The options are:. A volume option is also on the top of the menu and allows you to add or delete volumes to a container if available for your selection. Care needs to be taken when formatting disks. An inadvertent format of the wrong disk can cause some serious problems and data loss, so proceed with caution. One of the main uses of Disk Utility is to repair a disk. You will want to perform this task if your hard drive is experiencing problems such as slow access time or missing and corrupted files. Follow this procedure to repair a disk. Hopefully, after running First Aid, your disk problems will be resolved.
If not, you may need to engage in further investigation.
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Disks that appear in the listing of available devices are normally already mounted. You will be able to Mount or Unmount the disk based on its current state. These options are on the top menu and are only highlighted when the command can be used on your selected disk. Providing you already have Disk Drill Pro version, which you can get automatically by downloading from Setapp:.
How to access Disk Utility on macOS | WD Support
Disk Drill Pro recovery app is available from Setapp , along with dozens of Mac apps that will make your life easier. Never have to worry about a crashed or corrupted external drive again. Then use a different port to connect the external hard drive. For Macs with removable batteries, you need to switch them off, remove the battery, then press and hold the power button for 5 seconds.
After that, put the battery back in, plug in the power adapter and switch the power on again. It is possible to format a hard drive so it can be read on Mac and Windows computers, providing you format using exFAT. Console shows if an external drive or any error is detected under the Errors and Faults tab. If no errors show up, then the problem is not caused by the device.
To sum up, there are lots of potential solutions for a Mac not reading an external hard drive. If we were to pick one, Disk Drill seems to be the most well-rounded, offering plenty of customizations and power in an easy-to-use interface. Free download.
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