I have selected ‘New Image‘ on Disk Utility to create a backup image of hard disk, and it fails.
I then clicked on ‘Restore‘ tab to make a disk image of internal drive to another (external) disk, and that fails too, with error: could not restore input/output error
I then verified the hard disk, and got a report in green it was ok.
The destination disk is larger than the source disk, is brand new, formatted ‘Mac OS Extended Journaled‘ and the source has verified ok. I don’t see any reason why Disk Utility fails to image the hard disk.
Might have to clone the disk with another software.
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I faced similar problem while cloning my system through Disk Utility -> restore -- to an external SSD connected via USB, 3 times it gave the error -- /sbin/newfs_hfs Failed with error 256 Couldnt restore - input/output error OSStatus error 5.
Solution : I just changed the USB port and started all over again .. It worked
crwdns2934271:0crwdnd2934271:0 Manoj Kumar crwdne2934271:0