If your computer boots normally to your desktop then you do not have a recovery partition. If your computer boots into a four-option menu then you have a functional recovery partition that can install the OS. To make sure you have a functional recovery partition, restart your computer and immediately hold down the Command + R keys until the Apple logo appears. Stellar Data Recovery Professional is a sophisticated application to scan and recover your APFS or HFS drive.For Mac OS X 10.6 and earlier, you will need the OEM installer disc.įor Mac OS X 10.7 and later, you can use the recovery partition on the original drive. You might need the help of a professional external hard drive recovery software for Mac. Though helpful, FSCK isn’t the sure shot method to repair the corrupt external/internal hard drive. Invalid volume free block count, and likewise.ģ) Recover External Drive using Stellar Data Recovery Professional for Mac.It will help you fix Invalid B-tree node problem occurred on the disk drive. The command (-r) in the above code will recreate Catalog B – Tree. Use of df-h1 will let you know the path of the internal disk drive. Launch Terminal, enter df -h1 and press Return. To run fsck command you have to restart Mac and log in as ADMIN. You might have luck with FSCK command line. Moreover, the corruption may not allow you to copy & paste all the files from the disk. But doing this may also result in copying errors to another location. You can try copy and paste all files from the corrupt external or internal hard drive to another destination. Further, try Mac external hard drive recovery software as a last resort. But if the external hard drive is beyond the repair scope of the Disk Utility, then it could be possible that the directory structure of the drive is corrupt severely.ĭon’t panic, the below 3 activities could be performed when Disk Utility fails to repair an external hard drive. In most cases, the Disk Utility is vigorous enough to repair an external drive and even your start-up disk. The above message doesn’t show up in normal circumstances of external hard disk errors. Back up as many of your files as possible, reformat the disk and restore your backed-up files. Error: Disk Utility can’t repair this disk.
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