To repair the startup volume, run First Aid from Recovery. 'First Aid found corruption that needs to be repaired.'First Aid could not unmount the volume for repair.If possible back up the data on this volume. What does that mean and what is the impact on my computer. Should I be concerned that the volume could not be unmounted. Restoring the original state found as mounted. The volume Macintosh HD appears to be OK.
During the running of First Aid on an external hard drive, one of the following error messages may pop up indicating First Aid operation failure:Ĭhecking volume bitmap. However, it sometimes can fail to repair the disk. Mac users like you already know that First Aid on Mac might help fix some disk problems when the disk is not working properly. If necessary, recover lost data from the external hard drive with iBoysoft Data Recovery for Mac to avoid permanent data loss. Summary: First Aid process has failed on external hard drive? In this article, we will tell you what to do if First Aid can't repair external hard drives, SD cards, USB flash drives and more.
