Repair bad sectors on external hard drive mac

Email required. Your Name required. Your Email required. Your Message. Soft bad sector are primarily occur to the software problems. Soft bad sector on the hard drive of macOS can be easily fixed using the help of a 3 rd party hard drive repair utility. Hard bad sector: Hard Drive Manufacturer Faults 2. Electronic Heat 3. There are a few ways to perform a stress test, but in all cases, we want the entire volume to be written to and read back.

Once again, we will use two different methods.

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When the test is complete, if no errors are listed, you can feel confident that your drive is in very good shape and can be used for most activities. Once the erasure is complete, if Disk Utility shows no errors, you're ready to use the drive knowing it's in great shape.


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Share Pin Email. Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About. He is the president of Coyote Moon, Inc. Updated October 15, You can find out more about external drive enclosures in our guide: On to the process of reviving the drive. With the patient, er, drive hooked up to your Mac, we're ready to start the revival process. Make sure the drive is powered on and connected to your Mac. The drive will appear on the Desktop , indicating that it mounted successfully, or you'll see a warning message about the drive not being recognized.

If you see this warning, you can ignore it. What you don't want to want is Door 3, where the drive doesn't show up on the Desktop and you don't see any warning. If that happens, try shutting down your Mac, powering off the external drive, and then restarting in the following order. Turn the external drive on. Wait for the drive to get up to speed wait a minute for good measure.

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10 Worst Mac Hard Disk Drive Problem with Solutions

Start up your Mac. If the drive still doesn't appear, or you don't get the warning message, there are still a few more things you can do. You can try shutting down the Mac, and changing the external drive to a different connection, using a different USB port, or changing to a different interface, such as from USB to FireWire.

You can also swap out the external for a known good drive, to confirm that the external case is working correctly. If you still have problems, then it's unlikely that the drive is a candidate for revival. In Disk Utility's list of drives, locate the one you are attempting to revive. Externals usually show up last on the list of drives. Select the drive; it will have the drive size and manufacturer's name in the title. Click the Erase tab.


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You will be warned that erasing a disk deletes all partitions and data. Click Erase. If all goes well, the drive will be erased and will appear in the Disk Utility list with a formatted partition with the name you created, above. Quit Disk Utility, if it's running. In the list of devices, select the hard drive you're attempting to revive. Click the Start button. You will see a warning that the process can cause data loss.

Click the Scan button. Drive Genius will start the scan process. After a few minutes, it will provide an estimate of the time needed. In most cases, this will be anywhere from 90 minutes to 4 or 5 hours, depending on the drive size and the speed of the drive interface. When the scan is complete, Drive Genius will report how many, if any, bad blocks were found and replaced with spares. If no bad blocks were found, the drive is ready to use.

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Launch Disk Utility, if it isn't already running. This product automatically removes system junks, large unused files, duplicates, old apps, and unused login items from Mac hard drive with the click of a button. Mac hard drive S. There still might be hope for your hard drive. In order to cover all recovery chances from your end, follow these steps:. If none of these steps works, you may need to repair or replace your hard drive with a new one. Related Topic: While trying to perform partition resizing or reformatting operations, many users report accidentally deleting their partitions having important data.

Also, due to issues such as partition table damage, technical issues with the drive, bad sectors, or virus attack, one or more hard drive partitions can get accidentally deleted. Moreover, if volume s on your Mac fails to mount, then this software will help recover the volume data smoothly. Find Deleted Partitions on macOS.

Recover Partition with Terminal MAC // Repair boot partition HDD

The platters are quite delicate and are easily damaged by the slightest jerk or drop. If you hear clicking noise emanating from your Mac hard drive when you try to boot up your Mac, that could mean your hard drive has suffered physical damage. DO NOT attempt to open it up and mess around since that could further the damage and lead to permanent loss of the data contained in it. When this happens, you may also be unable to erase or partition the drive.

Bad Sector Mac Hard Drive Recovery Software to Retrieve Files from Bad Mac Hard Disk Drive

This mainly happens because the boot drive has been modified somehow or it is being used by some other process or application. This can be done in one of the following ways:. Doing so will recreate new HFS file structure on the hard drive, which will be free from cryptic errors. However, every encryption works in conjunction with a decryption key which is used to decrypt or unlock the data before it can be accessed. Mostly, this decryption key is a password chosen by you.

In the event that you lose or forget your encryption password, you might lose access to your data permanently. First make really sure you are typing in the password correctly. Turn off the Caps Lock and choose the Show Password option just to be double sure. Data loss from any hard drive is inevitable. With powerful algorithms allowing the software to scan for recoverable data on your Mac hard drive, this software to recover deleted files from Mac is the best bet you have to recoup all your missing data.

You might suspect that your Mac hard drive has started developing bad sectors if it throws any nasty errors saying so or if some information suddenly starts to go missing.


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Performing hard drive partitioning operations is fairly simple using Disk Utility. But in some cases, Disk Utility fails to create partitions on Mac hard drive or perform other related partitioning operations. There you go! But if you have the help of trustworthy applications from Stellar Data Recovery, you can easily overcome the issues of Mac hard drive not mounting, SSD not recognized on Mac, data recovery for Mac including the best Mac data recovery tool.

Vishal is a data recovery expert Stellar addressing several data loss scenarios on a macOS system. He loves to read autobiographies and his personal favourite is of Steve Jobs. View More. Being a reputed Video photographer in my city. My MacBook is always filled with lots of stuff.