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 os yosemite 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. 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. Only update a machine that is absolutely 100% healthy.
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