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Erase MBP with Mojave and Install High Sierra?
- Thread starter PTVMan
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Should I erase the MBP first and do a clean install of High Sierra first or just clone?
I found this set of instructions. So basically erase, reinstall High Sierra and then clone?
https://support.apple.com/en-us/HT204904
If you want to go that extended route you can. However, if you made a full clone bootable backup of your wife's drive all you need to do is erase and clone.
https://bombich.com/kb/ccc5/i-want-clone-my-entire-hard-drive-new-hard-drive-or-new-machine.
1. Boot from the cloned backup
2. Open disk utility and erase the internal drive (make sure you are "erasing" the ENTIRE drive, not just a partition ON the drive). Make sure "show all devices" is selected in the popup in disk utility (it's on the upper left)
3. I suggest Mac OS extended with journaling enabled, GUID partition format (that's "HFS+" instead of APFS)
4. Once the erase is done, you might run "first aid" on the newly-erased drive, just to check it out.
5. Then, re-open CCC and "re-clone" your backup BACK TO the internal drive. If CCC offers to clone the recovery partition as well, do so.
6. The first time you reboot to the internal drive, hold down the option key at boot until the startup manager appears. Re-select your internal drive, and hit return.
7. Do you get a good boot?
8. If yes, open the startup disk preference pane, enter your password, and RE-DESIGNATE the internal as the boot drive. (as far as the Mac is concerned, it's booting from "a new drive" and it has to be designated as such).
2. Open disk utility and erase the internal drive (make sure you are "erasing" the ENTIRE drive, not just a partition ON the drive). Make sure "show all devices" is selected in the popup in disk utility (it's on the upper left)
3. I suggest Mac OS extended with journaling enabled, GUID partition format (that's "HFS+" instead of APFS)
4. Once the erase is done, you might run "first aid" on the newly-erased drive, just to check it out.
5. Then, re-open CCC and "re-clone" your backup BACK TO the internal drive. If CCC offers to clone the recovery partition as well, do so.
6. The first time you reboot to the internal drive, hold down the option key at boot until the startup manager appears. Re-select your internal drive, and hit return.
7. Do you get a good boot?
8. If yes, open the startup disk preference pane, enter your password, and RE-DESIGNATE the internal as the boot drive. (as far as the Mac is concerned, it's booting from "a new drive" and it has to be designated as such).
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How did it go?
Another option would be to wipe the drive as above - then install the HS clone - test and try it out at this stage!!
Then upgrade Mojave over top of HS and go through "all the beta updates" very time consuming
This would allow you to check that everything is OK with the HS clone - email software serial numbers, software compatibility, etc. before taking the last step to Mojave.
FYI CCC - Carbon Copy Cloner version 5 is Beta "on Mojave" as of this post (V 5.1.3 beta) - not sure what happens on CCC 4
So it might be good to upgrade to HS - test - and then upgrade the OS to Mojave.
I went through this process and chose the APFS format and all seems to work fine.
Very impressed with Mojave - there are new features that make the update interesting versus HS which was a boring update IMHO.
Another option would be to wipe the drive as above - then install the HS clone - test and try it out at this stage!!
Then upgrade Mojave over top of HS and go through "all the beta updates" very time consuming
This would allow you to check that everything is OK with the HS clone - email software serial numbers, software compatibility, etc. before taking the last step to Mojave.
FYI CCC - Carbon Copy Cloner version 5 is Beta "on Mojave" as of this post (V 5.1.3 beta) - not sure what happens on CCC 4
So it might be good to upgrade to HS - test - and then upgrade the OS to Mojave.
I went through this process and chose the APFS format and all seems to work fine.
Very impressed with Mojave - there are new features that make the update interesting versus HS which was a boring update IMHO.
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