- Disk Utility For Mac Download
- Disk Utility For Macos Mojave
- Disk Utility For Mac 10.10.5
- How To Run First Aid In Mac
Let macOS manage space between multiple volumes
With Apple File System (APFS), the file system introduced in macOS 10.13, you can easily add and delete volumes on your storage devices. APFS-formatted volumes automatically grow and shrink—you never have to repartition a storage device again.
You can use Disk Utility on your Mac to manage internal disks and external storage devices. Using Disk Utility, you can: Format and manage volumes on physical storage devices. Create a disk image, a single file you can use to move files from one computer to another or to back up and archive your work.
To access the Disk Utility on a modern Mac—regardless of whether it even has an operating system installed—reboot or boot up the Mac and hold Command+R as it boots. It’ll boot into Recovery Mode, and you can click Disk Utility to open it up. In Recovery Mode, macOS runs a special sort of recovery environment. How to Repair a Mac Boot Disk with Disk Utility in Mac OS X. Reboot the Mac and hold down Command+R to boot into Recovery, or hold down OPTION; Select “Recovery HD” at the boot menu; At the Mac OS X Utilities screen, select “Disk Utility” Select the boot volume or partition from the left menu and click on the “Repair” tab; Repair. May 24, 2012 Choose “Disk Utility” from the Mac OS X Utilities screen Click the hard drive that reported the error, click the “First Aid” tab, and now click on “Repair Disk” After Repair Disk has ran successfully, you are free to boot OS X as normal and the drives issues should be resolved. Here's how to reformat your drive so it can be read by and Mac or a PC. Open Disk Utility (as per the steps above). If you don’t require the data on the hard drive, select the disk and click Erase.
Keep your external storage devices secure
When you get a new flash drive or other storage device, format it as APFS and encrypt it with a password to protect its contents.
Give your disk a checkup
Disk Utility For Mac Download
![Disk Disk](https://help.apple.com/assets/5C05C74A094622625534BCBD/5C05C74B094622625534BCC5/en_US/e406ea521d379bbbb2c18782d4bffa59.png)
If you’re having problems with a disk, Disk Utility can check the disk and repair problems it detects.
To browse the Disk Utility User Guide, click Table of Contents at the top of the page.
Disk Utility User Guide
Disk Utility For Macos Mojave
Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have.
If you run First Aid on a disk, Disk Utility checks the partition maps on the disk and performs some additional checks, and then checks each volume. If you run First Aid on a volume, Disk Utility verifies all the contents of that volume only.
- In the Disk Utility app on your Mac, choose View > Show All Devices.Note: If you’re checking your startup disk or startup volume, restart your computer in macOS Recovery, select Disk Utility in the macOS Utilities window, then click Continue. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD - Data).
- In the sidebar, select a disk or volume, then click the First Aid button .If Disk Utility tells you the disk is about to fail, back up your data and replace the disk—you can’t repair it. Otherwise, continue to the next step.
- Click Run, then click Continue.If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. You can click Show Details to see more information about the repairs. Otherwise, you may need to do one of the following.
- If Disk Utility reports “overlapped extent allocation” errors, two or more files occupy the same space on your disk, and at least one of them is likely to be corrupted. You need to check each file in the list of affected files. Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.
- If you can replace a file or re-create it, delete it. How to open rpf files.
- If it contains information you need, open it and examine its data to make sure it hasn’t been corrupted.
- If Disk Utility can’t repair your disk, or you receive a report that the First Aid process failed, try to repair the disk or partition again. If that doesn’t work, back up as much of your data as possible, reformat the disk, reinstall macOS, then restore your backed-up data.
If your Mac has a Fusion Drive and you see a flashing question mark or alert, see the troubleshooting section of the Apple Support article About Fusion Drive, a storage option for some Mac computers.
Disk Utility For Mac 10.10.5
If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. For information about servicing your Mac, see Find out how to service or repair your Mac.
How To Run First Aid In Mac
See alsoErase and reformat a storage device in Disk Utility on MacAdd, delete, or erase APFS volumes in Disk Utility on MacPartition a physical disk in Disk Utility on Mac