My iMac died and I put its should (the hard drive) is in a usb3 external case. I am running a 2012 mac mini server: both computers were running Yosemite OS. There are some files that I don't have a backup for, namely a 57 GB parallels .pvm file. Disk Utility reports A disk with a mount point is required. The disk mounts on my mini in spite of that message. I am not able to boot up on the external drive after setting that drive as the Startup Disk - it always fails.
I have tried to copy the file by dragging it onto the mini drive and it twice got about 35 gigs (took 12 hours). I don't know if carbon copy cloner or duper duper or migration assistant would be more effective - or if it is dead. I have copied some data from it successfully. If I carbon copy cloned the entire drive, I don't know what the result would be, or how long that would take.
There are various tools like disk warrior 5 (I have an older copy of v. 4.4) tech tool pro, Drive Genius, and Data Restore: these all are $100 or a bit more, but who knows whether there is physical damage that is unfixable by these tools.
I have tried to copy the file by dragging it onto the mini drive and it twice got about 35 gigs (took 12 hours). I don't know if carbon copy cloner or duper duper or migration assistant would be more effective - or if it is dead. I have copied some data from it successfully. If I carbon copy cloned the entire drive, I don't know what the result would be, or how long that would take.
There are various tools like disk warrior 5 (I have an older copy of v. 4.4) tech tool pro, Drive Genius, and Data Restore: these all are $100 or a bit more, but who knows whether there is physical damage that is unfixable by these tools.