That should replace the damaged/ missing boot loader (or whatever else is broken in the OS). Reinstall is the default option in the recovery menu - that does not delete your personal data, it copies the new OS files over the top of the old ones.
Note: a full backup copy can be used with Migration Assistant whereas a disk image backup cannot, but you use manual methods (or apps) to restore from the disk image.Įtresoft is also correct about upgrading - wait until this OS boots correctly. Don't use 'New disk image from volume', that option saves the 'full size' of the volume including empty space! Save the final disk image to the external disk. The method involves using Disk Utilities 'File > New disk image from folder…' then select the base of the boot disk as the source. If you cannot afford to erase the destination disk you can save a backup to a disk image - this is less flexible, but it will have al the data in one disk image. Use the restore tab for the volume to back it up. You may want to verify the volume is not damaged whist in recovery mode - select the indented 'volume' for your boot disk & verify that - repair if required (the disk is the item above that). That will allow you to get a copy of the data (assuming the disk is still in a mountable state).
#ONYX MAC UTILITY HOW TO#
The lack of a startup disk in the panel suggests the boot loader on the boot disk is missing/damaged etc.Įtresoft has covered how to backup in Disk Utility. They hack, they do not "clean" or "maintain" anything. Just don't be confused by their names or branding. Sometimes you can do fun, funky things with them. Is Onyx Cleaner Goof Mac Cleanup Utility Sit back in your chair and relax while the chosen cleaning tool does the entire dirty job for you Mac Cleanup Utility Onyx: Expert Overview Onyx is one of the basic cleaning applications that make it possible to get rid of the useless items such as duplicates and tools that you do not need anymore. If you choose to use low level hacking tools, that is your decision. You don't need any "maintenance" or "clean up" tools on OS X. One of them will be wiped out entirely and replaced with the other.Īfter that you can try a non-destructive OS X reinstall. Double check the source and destination disks.
You will "restore" your current startup disk to your backup disk. Technically, Disk Utility calls it "restore". If you have another drive that is at least as large as your startup disk, you can use Disk Utility (from recovery) to backup. You should be able to reinstall OS X onto your startup drive without losing any files. Otherwise you risk disaster and you don't seem to be far from that now.
#ONYX MAC UTILITY UPDATE#
Only update a machine that is absolutely 100% healthy.
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