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Downgrade to 10.13 Without Backup?
- Thread starter legaleye3000
- Start date
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If you're so sure that you don't need any backup, create an installation USB as instructed:
https://support.apple.com/en-us/HT201372
Wipe the disk with Disk Utility once booted and install High Sierra accordingly.
https://support.apple.com/en-us/HT201372
Wipe the disk with Disk Utility once booted and install High Sierra accordingly.
Last edited:
OP:
Do you have much "user data" (i.e., stuff that you created) on the existing drive?
If so, you need to back it up first, or... it's gonna be gone.
This may not matter to you.
But if it does, I'd advise you to do this:
1. Get an external USB3 drive.
2. Get either CarbonCopyCloner or SuperDuper. Both are FREE to download and use for 30 days.
3. Create a cloned backup of your internal drive AS IT IS NOW.
Then, you can take macloverHK's advice in #3 above -- create a bootable USB installer for High Sierra, then "nuke and pave" the internal drive.
Once you have the new High Sierra install running, create a NEW account (use your old username and password if you wish).
Now... you can mount the cloned backup IN THE FINDER and "manually copy over" things that you wish to keep.
IMPORTANT:
You will have to click one time on the external drive, then open "get info", then click the lock and enter your password, then put a check into "ignore ownership on this volume", then close get into.
This eliminates permissions problems moving items from the old account to the new one.
Do you have much "user data" (i.e., stuff that you created) on the existing drive?
If so, you need to back it up first, or... it's gonna be gone.
This may not matter to you.
But if it does, I'd advise you to do this:
1. Get an external USB3 drive.
2. Get either CarbonCopyCloner or SuperDuper. Both are FREE to download and use for 30 days.
3. Create a cloned backup of your internal drive AS IT IS NOW.
Then, you can take macloverHK's advice in #3 above -- create a bootable USB installer for High Sierra, then "nuke and pave" the internal drive.
Once you have the new High Sierra install running, create a NEW account (use your old username and password if you wish).
Now... you can mount the cloned backup IN THE FINDER and "manually copy over" things that you wish to keep.
IMPORTANT:
You will have to click one time on the external drive, then open "get info", then click the lock and enter your password, then put a check into "ignore ownership on this volume", then close get into.
This eliminates permissions problems moving items from the old account to the new one.
I don't know if Migrate works down the way ie 10.14 to 10.13 but if it did could you not do a backup using time machine onto an external drive. Then do as the posts above say but use the migrate option and migrate you existing stuff from the backup back onto your new installation.