Haven’t used iPad for 2 years. Forgot passcode. Downloaded iTunes, restore to factory failed, with error 0xE8000015. Downloaded 3u Tools, flashed firmware. 3u Tools wasn’t able to connect to iPad. Flashed firmware again. Still couldn’t connect after flashing, can’t restore on Windows 10. Connected to iTunes in MacBook, restore failed again. Connected to iTunes in Windows 10 again, iTunes gave message that iPad was in recovery mode, asked to restore. I clicked ok, iPad restored to factory. Now I think I remember what the passcode could have been. I don’t know if there’s a way to enter this old passcode to recover the data that was in iPad before factory reset. At least I now have a working iPad.
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.