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But if the system’s disk is out of warranty I usually remove the drive from the failing system and connect it to a test system to determine whether I can run diagnostic tests on the slaved drive.Īnother option available to Mac users whose systems possess a Lion recovery partition (such as is found on many new models) is to attempt booting using Recovery Mode. If the system is covered by Apple’s initial warranty or an extended AppleCare Protection Plan, I ask the client or user whether they wish to let Apple perform the diagnosis and repair to help lower the repair cost. When faced with a Mac disk issue that prevents proper startup, I often first check to determine the system’s warranty coverage with Apple. If a connected disk doesn’t appear within Drive Utility or the Mac’s System Information report (reached by clicking the Apple icon from the menu bar and selecting About This Mac | More Info | System Report), that’s a probable sign the disk is experiencing difficulty. Some, however, choose to continue using the disk, hoping that the damage is limited to specific blocks or sectors. I believe that, once bad blocks appear, businesses are best served replacing the failing drive. If you receive an error message instead, or warnings indicating damage, the disk should likely be replaced (additional tests could be run on the disk using a utility such as DiskWarrior or TechTool Pro, which can further diagnose bad blocks and report detailed SMART status disk health information). Typically the utility should respond that the volume checked “appears” to be OK. Select the Mac’s system disk and click the Verify Disk or Repair Disk button found on the First Aid tab. Check hard disk health mac mac os x#Using Mac OS X Lion, open Disk Utility (found in Applications\Utilities). ![]() While Disk Utility doesn’t fix physically failing disks, it can help speed diagnosis. The Mac’s native Disk Utility application can help determine whether a system’s hard drive is encountering trouble. At a minimum diagnostic tests should be run on the disk. In such cases it’s likely best to simply replace the drive. Obviously, if audible clicks can be heard, that’s a sign the hard disk’s head may be striking the platters. Check hard disk health mac full#Once a full backup is confirmed, troubleshooting can begin. When the Mac still starts up properly, the best first step to take is to make a complete backup of the system’s data. When hard disk trouble is suspected, it’s critical that troubleshooting begin quickly. The more business data or even personal information a user maintains on a Mac, the more important a Time Machine and even automated offsite backup (such as a Carbonite or Mozy) becomes. Potentially the greatest technology stress and heartbreak results from failed hard drives, a risk from which Mac users certainly aren’t immune. This allows you to do it in modern versions of MacOS, including macOS Sierra, High Sierra, Mac OS X El Capitan, Mavericks, Yosemite, OS X Lion, Mountain Lion, and OS X Mavericks.īefore proceeding, you should quickly back up your drive using Time Machine.Erik Eckel shares some tips for diagnosing and recovering a failing Mac hard disk. In this case, all you have to do is reboot the Recovery HD partition and run the repair disk from there. Check hard disk health mac how to#How to repair the boot disk with Disk Utility This does not mean that you cannot repair the boot drive, it just requires a new step, which we will discuss next. If you see a red message saying “Error: This disk needs to be repaired”, you can just click the Repair Disk button to start that repair process, which works on all internal or external drives – If that drive is not a boot disk, you will notice that the Repair Disk button is not at hand. Checking the map of the “APPLE Media” area Checking the conditions Checking the partition list Checking the EFI system partition Checking the EFI system partition size Checking the EFI system partition file system Checking all the items in the EFI partition loader Checking the physical volume partitions of the core repositories The partition map appears to be OK ![]()
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