Back up as many of your files as possible, reformat the disk, and restore your backed-up files. If you have any idea to get the HDD working or even safe the files, I would be really grateful.Īlmost forgot about this from Disk Utility:ĭisk Utility can’t repair this disk. This was the try: $ sudo diskutil eraseDisk JHFS+ DISK_VOLUME disk1īut it didn't work as well. Than for each disk: $sudo diskutil unmount force disk1snīecause I wasn't able to do anything with my external HDD I made a desperate attempt to erase everything on it, including unbackuped files, cause this used to be the backup plan. Gave this: Forced unmount of disk1 failed: at least one volume could not be unmounted If I open it in disk util I sometimes see an actual name of a partition, but most likely it's not the real name.Ģ: Apple_HFS Macintosh HD 140.0 GB disk0s2ģ: Apple_Boot Recovery HD 650.0 MB disk0s3Ĥ: Microsoft Basic Data BOOTCAMP 110.1 GB disk0s4Īnd then to unmount this: $sudo diskutil unmountDisk force disk1 Replace DRIVENAME with the name of the volume you want to unmount, then hit RETURN key to force the drive to unmount. Try and boot your USB installer to the prime installation screen and run Disk Utility to try and repair the disk. Could be corrupt files or SSD flash defect. My 1TB LaCie Rugged THB decided it was a good idea to stop working all of a sudden. From the command line of Mac OS, enter the following string: diskutil unmountDisk force /Volumes/DRIVENAME. There are errors on the disk/partition and macOS cannot boot as a result.
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