- #BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X PRO#
- #BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X VERIFICATION#
- #BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X SOFTWARE#
- #BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X SERIES#
Other options which are available in fsck_apfs and might warrant calling it directly from the command line include: The -y option ensures that fsck_apfs performs all the repairs which it thinks it can, and the -x option returns its output in XML format, which is then displayed in the dropdown in Disk Utility, so that you can see the results of the test and repair. Where rdiskname is something like /dev/rdisk3s1. In most circumstances, it is therefore simpler and just as effective to use Disk Utility to check and repair APFS volumes, as it handles their unmounting, calls fsck_apfs, then remounts them without your having to call any additional actions or commands.
The only advantage in using fsck or calling fsck_apfs direct is in the other options available. When you run either the command tool fsck or the First Aid action in Disk Utility on an APFS volume, they simply call on the tool fsck_apfs to perform the work. There is now at least one third party utility which can attempt to recover the contents of APFS volumes, as I describe below. The sole exception is for volume recovery, a feature not offered in Disk Utility or fsck. Apple’s tools remain the only serious options for APFS. As a result, several vendors have announced their intended support for APFS, but as far as I am aware at present, only limited functions are available in third party products at present. This has changed with the arrival of Apple File System, APFS, largely because Apple has still failed to provide sufficiently detailed documentation to enable third parties to develop their own utilities to maintain or repair APFS volumes. Many Mac users have successfully recovered damaged disks which Disk Utility or fsck have declared were unrepairable, which tools like Drive Genius and DiskWarrior have been able to repair. Although they’ve been reasonably useful and reliable for much of the history of the Mac Extended or HFS+ file system, third-party tools have often outperformed Apple’s. Questions? Comments? Have a fix? Be sure to check us out on Twitter.Bundled disk checking and repair tools have something of a chequered history. In addition, for external drives you can troubleshoot any daisy chains and drive connections if the drive will not mount, or if it suddenly ejects, since improper daisy-chaining can lead to loss in power or data connection that can corrupt drive contents. If bad blocks continue to appear, then this suggests the drive will likely need to be replaced.įor external drives, unfortunately, SMART status checking is not supported however, you can still check its formatting and perform a surface scan. If you do find bad blocks with a scan, then again repeat this scan the following day, after using your system, and continue to do so for a few more days. This will check for bad blocks and replace them with spare blocks, if necessary.
#BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X PRO#
If they do, then this indicates the drive may be failing.įinally, use a third-party utility like Drive Genius or Disk Tools Pro to check the drive's media with a surface scan. Follow this by checking the drive's formatting regularly (daily), to ensure that no more errors crop up. If your first check shows formatting errors, boot to the Recovery HD partition by holding Command-R at startup, and then fix the drive. If the SMART status checks out, then check the disk's formatting regularly with Disk Utility.
#BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X VERIFICATION#
The SMART verification status for the drive is located at the bottom of the Disk Utility window.
If this says anything other than "Verified," then you need to replace your drive.ĭisk Utility is not the only option for checking the SMART status, as there are numerous third-party programs like SMART Utility (some of which are free), that may be an even more thorough SMART checker than Disk Utility. Then, at the bottom of the window you will see a "SMART Status" with the results of the check. This can be done at any time using Disk Utility by opening the program and selecting your drive device. If any of these are out of place, then the drive will flag it to the system when a SMART check is performed.
#BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X SERIES#
The first option for testing your drive is to check its SMART (Self-Monitoring, Analysis, and Reporting Technology) status, which is a series of built-in benchmarks and thresholds that the drive regularly monitors itself. If your Mac regularly slows down or crashes, or if you get odd 'permissions denied' errors about the inability to access certain files you previously had access to, then your drive may be on its way out.
#BEST HARD DRIVE DIAGNOSTIC AND REPAIR TOOL FOR MAC OS X SOFTWARE#
A failing hard drive can mean loss or corruption to important data or to applications and system software that can further destabilize the system.
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