How Can I Check For Hard Drive Smart Errors On A Macbook
How Can I Check For Hard Drive Smart Errors On A Macbook Air
How Can I Check For Hard Drive Smart Errors On A Machine

03 February 2017 by Michael Nuncic

Whether you are a private user or work within an IT department, you can sometimes be presented with a stark reality; hard drives are no longer working as they should and/or data suddenly disappears. Unlike the usual symptom of a loud scratching or ‘clicking’ noise, it is not always immediately clear whether a hard drive is physically defective or not. Thus, many users are initially irritated and do not know how to react; is it a one-off event or is it a recurring problem? Hard drive failures can happen relatively quickly, as the average lifetime of these devices is usually around 3 to 5 years.

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El Capitan’s Disk Utility is a handy tool for troubleshooting and repairing your hard drive (whether you’re noticing that your Mac has slowed considerably or you have problems opening files.
Best of all, it can health check your Mac hard drive for bad sectors. Sectors are basically blocks of space on a disk drive. Bad sectors are blocks that are damaged thus cannot be read. Just open the app and navigate to the “Drive Monitor” section and click the “Continue” button to scan the disk.

If the affected hard drive is still responding, there are a variety of suitable diagnostic software products that can be used to assess the condition of the device. The quality of tools can vary – some are relatively harmless and can not cause any (further) damage, while others can interfere so deeply with the hardware that the hard drive (and data) can be severely damaged by the tool.

Click Start button and got to Computer. Right-click on your hard drive. Click on Properties. Select Tools and choose Check Now option. Tick checkbox next to Automatically Fix File System Errors. Check the checkbox next to Scan for and Attempt Recovery of Bad Sectors. Click OK and reboot your computer once it is done.

A smart approach

The most important technology used in checking a hard drive is ‘SMART.’ (Self-Monitoring, Analysis and Reporting Technology). Almost all modern hard drives now support SMART analysis tools in order to check the physical condition of the media. According to a study conducted by Google several years ago, two out of three hard drive crashes can be predicted using such an analysis. SMART tools include 10 critical indications that can be interrogated and when this failure is indicated, it can be flagged as a 'Possible Indicator for an Impending Electromechanical Failure'. In addition, SMART tools cover about 30 other attributes, which can be queried and serve as indicators to predict any impending failures. This will help you in deciding whether or not your hardware needs to be replaced to avoid potential data loss.

One of these possible attributes is the SSD indicator 'SSD Life Left'. It shows the approximate SSD remaining lifetime with respect to program/erase cycles or flash blocks that are currently available. This can come in very handy to monitor the health of your Solid State Drives.

Don’t leave it too late

It’s also often the case that users will come into contact with SMART tools when damage has already occurred (and when it’s often too late). For this reason, you should look to use SMART tools throughout the life of your device at regular intervals, monitoring the results periodically. Unfortunately, most operating systems do not automatically determine the diagnosis data and present it to the user in a clear format. Instead, they have to be collected with the help of special tools.

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Windows Check Disk tool

It is possible to start the ‘CHKDSK’ tool quickly with a right-click on the hard drive under ‘Properties > Tools > Error check’ under the Windows operating system. However, you only want to get information about whether something is wrong or not, therefore you should make sure that you have not clicked either the 'Automatic Data System Error Correction' or 'Find/Restore Bad Sectors' options. Subsequently, the tool checks the respective hard drive and delivers a report. It is noticeable that the tool does not list all the available information of SMART analysis, but only generally says that the storage medium is either in functioning or not.

On the other hand, the detailed report from CHKDSK contains important information about whether the index entries of the hard disk are correct, if the security descriptions of the data are correct and if there are problems with the data structures. This is certainly important information, but only as a second step, as you firstly want to determine the physical condition of the hard drive and how long it will last for. This type of analysis is only possible with the special SMART diagnostic tools.

How can i check for hard drive smart errors on a macbook

A general word of warning; it is extremely important to use CHKDSK with caution. The incorrect use of CHKDSK can do more harm than good and can permanently destroy data that may otherwise have been recoverable.

What can SMART tools offer?

How Can I Check For Hard Drive Smart Errors On A Macbook

SMART tools normally perform several different tests with the hard drive. For example, there is a ‘fast SMART check’, which queries the most important indicators in the firmware of the hard drive (according to the manufacturer's definition). These indicators include bad sectors, reassigned sectors, the number of spin starts of the spindle until it reaches full speed (Spin Retry Counts), and many others. The most important tests are ‘Drive Self Test (DST)’, ‘Short Test’, or the ‘Long Test’, where every single sector of the hard drive is read, which can take an extremely long time. Different tests provide different types of information in their reports, allowing you to build a picture of the overall health of the drive. An overview of some of the tools available can be found here.

Manufacturer's own SMART tools

Many hard drive manufacturers embed their own diagnostic tools within their devices, which present large quantities of important information and make it available to the user. In addition, some of the tools can change the hard drive settings; however manufacturers usually reject any responsibility for data loss that has resulted from using their tools, so be careful!

The information provided by these supplied or downloadable tools depends on the specific producer. They usually list defects and give the option to repair problematic sectors. As mentioned before, using these tools is at your own risk. Here are some links to the free diagnostic tools from Seagate, Western Digital, Hitachi and Fujitsu:

Hitachi

Commercial diagnostic tools

In addition, there are also a variety of commercial (both free and paid) tools that differ widely in scope and sometimes offer different information. What makes them interesting is that they combine different diagnostic examinations into one solution. In addition to the SMART diagnostic checks, they usually also offer benchmark and file benchmark checks, disk monitoring and error scans as well as power consumption and temperature checks.

How Can I Check For Hard Drive Smart Errors On A Mac

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