This article explains how a drive can be tested for defects or problems on a Mac.*END
Disk Utility is a drive diagnostics which can be used to test for defects or problems on a mac. It is located within the Utilities folder inside Applications.
Note: | This utility is also available in rescue mode for testing the Mac HD boot drive. It’s best to contact Apple for more information related to accessing and using rescue mode. Please see Disk Utility User Guide for more information from Apple. |
![Find Find](/uploads/1/2/5/8/125846100/284528701.png)
Mac OS 10.6 Snow Leopard through macOS 10.9 Mavericks | Click here for Instructions (instructions will appear below this table) |
Mac OS 10.10 Yosemite through macOS 10.14 Mojave | Click here for Instructions (instructions will appear below this table) |
Select an Operating System (OS) from the list above to display instructions for a specific OS.
How to test a drive on a Mac OS Snow Leopard through Mac OS Mavericks:
![Find Disk Identifier For Usb Drive On Mac Find Disk Identifier For Usb Drive On Mac](/uploads/1/2/5/8/125846100/785269891.jpg)
- Locate and open Disk Utility from Utilities, within the Applications folder. Alternately, if the Finder is active in the Menu Bar, use the key combination Command+Shift+U to open the Utilities Folder. Click on Disk Utility.
- Select the drive or partition on the left window pane and then select the First Aid tab. Select the Volume Icon which is the indented icon just below the disk shown as WD Passport below if the First Aid button is greyed
- Click Verify Disk to check a drive or partition for errors but not repair them.
- Click Repair Disk to check a drive or partition for errors and attempt to repair any problems found.
- Click Verify Disk Permissions to check the permissions on a drive or partition but not repair any errors.
- Click Repair Disk Permissions to check the permissions on a drive or partition and attempt to repair any problems found.
- If your Western Digital drive fails click here for warranty services, please see Answer ID 2774: Warranty policy and online warranty services for WD products
Or from Spotlight (The magnifying glass icon located at the right end of the menu bar)
I determined device ids using diskutil list then inspected each UUID using /System/Library/Filesystems/hfs.fs/hfs.util -k disk2s2 (substitute the correct disk id),. PID – Product Identifier VID and PID is unique for different flash devices After determining the value of your values – make it in your bootloader configuration file in syslinux.cfg.
Note: | Only the Mac OS Extended (HPFS+) file system supports permissions. FAT32 (MS-DOS) does not support permissions. |
How to test a drive on a Mac OS Yosemite through Mac OS Sierra:
- Locate and open Disk Utility from Utilities, within the Applications folder. Alternately, if the Finder is active in the Menu Bar; use the key combination Command+Shift+U to open the Utilities folder. Click on Disk Utility.
- Select the indented icon of the drive to be tested. This is the data volume of the disk. If volume is not visible ensure 'Show All Devices' is checked under Disk Utility View menu.
- Click First Aid from the tabs active tabs as seen below.
- A drop-down will appear prompting to confirm checking the volume for errors. Click Run.
- First Aid process will run several seconds to several minutes, depending on the amount of data on the drive, and any repairs to the file structure, data integrity, or permissions performed. Click the triangle icon to Show/Hide Details to view detailed information about the progress or any problems found.
- Click Done to close the dialog box.
- If your Western Digital drive fails click here for warranty services, please see Answer ID 2774: Warranty policy and online warranty services for WD products
Or from Spotlight (The magnifying glass icon located at the right end of the menu bar)
Published 08/20/2018 02:06 AM | Updated 09/17/2019 07:34 AM