Linked Questions

36
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 ...
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 ...
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 ...
5
votes
1answer
72 views

Update to macOS 10.12, but still keeping 10.11 in an external HD

I am still running macOS 10.11, now I wanna update to 10.12, but since some apps must be running on 10.11, so I need to keep this system and here is my plan: I use TimeMachine to backup my system 10....
2
votes
1answer
86 views

How long does it take for MacPorts to catch up with new macOSes?

A Wikipedia page is pretty good at showing the precise date when a version of macOS was released. The corresponding wikipedia page for MacPorts is not quite so helpful, and the MacPorts.org download ...
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 ...
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 ...
2
votes
0answers
405 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
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 ...
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
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
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
2answers
38 views

I'm using OSX 10.11 what should I be aware of when installing 10.12

I'm a developer, and I'd rather not mess up anything on my system. So I guess, the general. Take a backup advice applies. But is there anything else in particular that I should be aware of? ...
1
vote
1answer
52 views

Beta to regular

I need some advice. I have my Macbook running MacOS High Sierra Version 10.13 Beta. I'd like to downgrade to MacOS Sierra, can someone please help me with resources, a link, or anything similar?
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 ...

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