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- Recover Files from Formatted Hard Drive
Erasing and formatting is a common practice when users perform to wipe the content on your partition or disk. But you likely encounter errors like "Couldn't open disk. : (-69879)" in Disk Utility or "Error: -69879: Couldn't open disk" in Terminal when you erase your external hard drive. This article from EaseUS will help you fix this error with several workable solutions.
First Aid: Recover Lost File in Accidental Erasure
Other than the unable to erase data errors, you may also come across data loss if you have unintentionally erased the wrong drive. And even if you forget to back up your important files, you can still restore your lost files from an external hard drive with professional tools like EaseUS Data Recovery Wizard for Mac.
- Recover files from the external HDD on Mac by utilizing the Command-Shift-Delete or Option-Command-Delete commands, which allow you to "Delete Immediately bypass Trash" and empty the Trash, respectively.
- After wiping the disk in Disk Utility, recover the formatted external hard drives on Mac. When logical faults arise on the external hard drive, support the recovery of audio, video, photos, documents, and other files.
Here is how you can recover your lost files from formatted or erased hard drives:
Step 1. Search for lost files
Correctly connect your external hard drive to your Mac. Launch EaseUS Data Recovery Wizard for Mac, and select the external hard drive. Then, click "Search for lost files" to find lost/deleted files on your external devices.
Step 2. Filter and find lost files
After the scan, all file types will be presented in the left panel. Select the file type to find wanted files on your external devices.
Step 3. Preview and recover
Click the file and preview it. Then, select the files you want to recover and click the "Recover" button. You can save your data to local and cloud drives.
You may share this post to help more users in need:
Fix 1. Unmount the Drive Before Using It to Fix Disk Error 69879
If the error message pops out after the unmounting disk step, you may first manually unmount the disk or partition before you erase it. Follow the steps here:
Step 1. Hold Command + Space and type Terminal to open this app.
Step 2. Copy and paste the following command
Step 3. Run the following command after replacing disk_identifier with your disk info:
Now, you can erase your drive again.
Fix 2. Free Your Disk to Solve Couldn't Open Disk 69879
You can also erase the disk and leave it unformatted fiest and then reformat it with the file system. Do as follows:
Step 1. Launch Terminal and type the following command:
Step 2. Replace disk_identifier in the following command with your number and execute it.
Step 3. Now, you have successfully freed your diks and you can reformat the it again on Mac.
Conclusion
This article explains how to resolve the Mac issue "Couldn't open disk. : (-69879)" that may appear while trying to delete data from an internal or external drive. Use EaseUS Data Recovery Wizard for Mac if you're still interested in recovering data from the external device.
FAQs
Red this part to get more related information on this topic:
1. What is disk error 69879?
'Couldn't open disk 69879' fix When the Erasure Process Errors
This issue usually appears if there are write-protected, corrupted, or CoreStorage physical volumes on the internal or external drive that is being deleted. This can be a hassle, particularly if you have to wipe the drive in order to utilize it.
2. How to fix a writable disk is required (- 69772)?
- Verify if the drive is encrypted.
- Verify the permissions.
- Execute Disk First Aid.
- Delete the partitions.
- Delete the disk's recovery mode settings.
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Finley is interested in reading and writing articles about technical knowledge. Her articles mainly focus on file repair and data recovery.
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EaseUS Data Recovery Wizard is a powerful system recovery software, designed to enable you to recover files you’ve deleted accidentally, potentially lost to malware or an entire hard drive partition.
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EaseUS Data Recovery Wizard is the best we have seen. It's far from perfect, partly because today's advanced disk technology makes data-recovery more difficult than it was with the simpler technology of the past.
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EaseUS Data Recovery Wizard Pro has a reputation as one of the best data recovery software programs on the market. It comes with a selection of advanced features, including partition recovery, formatted drive restoration, and corrupted file repair.
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