Originally Posted By: kevs
Thanks Jon, I was wondering that maybe migration is not as good. Maybe itunes or other links wont work as good as a pure clone back.

But if you have SD then you don't want to clone back right? You want to download the OS and then do migration? To get that recovery drive?

BTW, if disk utility see issues that it cannot fix, and then you try Disc Warrior or tech tool, and it does not dix it, then erasing wont help probably, you need a new drive?
You have a point about the recovery drive. That's one reason why I switched from SD to CCC as my cloning app of choice. The other, more important, was that an El Cap clone made with SD wasn't bootable, although it was supposed to be (and Dave Nanian, the tech support guy, couldn't solve it either). CCC has worked flawlessly for me.

Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365