Linked Questions

1
vote
0answers
434 views

Restore Time Machine backup from Sierra to El Capitan [duplicate]

I'm currently running Sierra and would like to revert back to El Capitan. Is there any way I could use a backup done on a newer OS with Migration Assistant?
37
votes
4answers
56k views

How can I download an older version of OS X/macOS?

Sometimes it's hard to search for older versions of macOS & OS X on the App Store. This is an attempt to provide the canonical QA for this issue, as per the Meta QA - Where is the list of ...
6
votes
1answer
10k views

No user to login in MacOS High Sierra

I installed macOS High Sierra updating to APFS and everything was working correctly. After a couple of days I shut down and went off. I just came back and when I boot there are no users to login as ...
7
votes
1answer
975 views

tell-tale file to know whether Mojave is installed

I'd like to revert to High Sierra from Mojave via Time Machine. I've already wiped the drive and installed a Mojave Time Machine backup, but I'd like to go back even further. The presence of what ...
2
votes
1answer
3k views

Without a backup, can I downgrade from Sierra to El Capitan?

I haven't been making backups on my laptop (I know, this is something I'm going to change!) but I really want rid of Sierra, it's mucking about my wifi connectivity loads and I'm sick of it restoring ...
1
vote
1answer
3k views

Building boot caches on boot helper partition failed

Due to a Hard Drive failure I have had to restore my mac from a backup. Following the Restore From Time Machine Backup procedure under recovery mode takes about 8 hours. Eventually the data is ...
1
vote
0answers
3k views

OS X can’t be installed on “Macintosh HD” because the version of macOS is too new

I'm currently running Sierra, trying to download the El Capitan installer from the App Store, but am unable to due to the message in the title. Is there any way around this, or am I forced to erase my ...
2
votes
1answer
2k views

How to downgrade to macOS Sierra without Time Machine

I upgraded to High Sierra a week ago, my MacBook Pro 2016 (15 inch) is very slow now even in normal daily usage. I wanted to downgrade back to Sierra, but even tho my MacBook came originally with ...
0
votes
2answers
1k views

Restore Mavericks from Time Machine

I have a MacBook Pro early 2011. I'm thinking if to upgrade to Sierra. Right now I have Mavericks. If I backup my current system using the time machine, when I will restore from the backup, it will ...
1
vote
1answer
1k views

Trying to downgrade to High Sierra but Time Machine restore upgrades back to Mojave

I've been having major issues with Mojave - slow-downs, connectivity issues, crashing - you name it. I tried to downgrade back to High Sierra. High Sierra gets installed fresh, but my Time Machine ...
1
vote
0answers
1k views

Does restoring from Time Machine revert also the OS?

I want to try updating my MacBook Pro 13" (2013) from Mavericks to Sierra but I am afraid of performance issues. So I would like to be able to downgrade easily if I like. Does a Time Machine backup ...
1
vote
2answers
940 views

How to handle malfunctioning macbook after macOS upgrade while avoiding full reset

I have done a terrible mistake and upgraded my macbook pro to macOS High Sierra Developer Beta. I experience multiple malfunction behaviours, including: Missing files right after upgrade. Machine ...
2
votes
0answers
406 views

Can I find out the date I upgraded Sierra to High Sierra?

however silly this question might seem, there is a legitimate reason behind it... I would like to go back to Sierra on my iMac. So after creating a bootable Sierra installer I intend to wipe the drive,...
1
vote
1answer
241 views

How can I clean install of Sierra after trying Mojave upgrade?

I upgraded a Mac to Mojave and found it did not function the same as previous OS. I get a lot of people want to move forward, but I wish to go back to how my Mac was I now need to clean install ...
1
vote
1answer
73 views

How to ensure Time-Machine can rollback to a specific-date backup? (not deleting it)

I just upgraded from El Captain to Mojave and I have a Time Machine backup of the instant before starting the upgrade. I need to be able to eventually restore the previous operative system, but I am ...

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