BigDann

sumergo said:

Mike Wuerthele said:

ITGUYINSD said:

Mike Wuerthele said:

Samhain said:

Mike Wuerthele said:

BigDann said:

You know there is a very easy fix here!

The installer looks at its certificates and the systems date. So as long as the systems date is older than the expiring cert the installer won't be the wiser!

As an example I just installed Sierra on an old 2011 iMac. I altered the systems Date & Time setting to manual and then back dated it to Jan 2017. Restarted the system and then ran the OS installer USB thumb drive I've setup. Once done reset the Date and Time to automatic and its done!

Workarounds (like yours) are good to know in a pinch. The fix is to download the images, with the new certificate, because setting back a system clock can have unintended consequences.

Mike you said ‘ The fix is to download the images, with the new certificate,‘ sorry if I am being dense, but how do you do this now the installers are no longer available?

Most are available now, minus a few. They should all be available by tomorrow.

The key point, is if you have an install disk or update image that isn't Catalina that's older than about three weeks, you're going to need to replace it.

Probably a dumb question, but now that the App Store is different, I can't find all the old OS versions (El Cap, Yosemite, High Sierra, etc.).  Where do we get those?

Not a dumb question. The Medium post has most of them linked. Here they are:

Sierra: https://support.apple.com/en-us/HT208202
High Sierra: https://support.apple.com/en-us/HT208969
Mojave: https://support.apple.com/HT210190
The rest: https://support.apple.com/downloads

Further back than that, the best way is hitting the App Store from a Yosemite Mac and checking out the Purchased tab -- assuming that's where you got the OS from.

And (for me at least) each link comes back with:
"This copy of the install MacOS XYZ application is damaged, and can't be used to install macOS"

Mike Wuerthele said:

BigDann said:

You know there is a very easy fix here!

The installer looks at its certificates and the systems date. So as long as the systems date is older than the expiring cert the installer won't be the wiser!

As an example I just installed Sierra on an old 2011 iMac. I altered the systems Date & Time setting to manual and then back dated it to Jan 2017. Restarted the system and then ran the OS installer USB thumb drive I've setup. Once done reset the Date and Time to automatic and its done!

Workarounds (like yours) are good to know in a pinch. The fix is to download the images, with the new certificate, because setting back a system clock can have unintended consequences.

MplsP said:

flydog said:

Metriacanthosaurus said:

Hahahaha. 

Whoever sold you on the lie of USB-C was doing you no favors. 

Hold on while we run out and swap all the USB-A ports in everything. 

Incredible that people perpetuate this nonsense.  

Have you looked around? Pretty much every single car has a USB A plug. The airplane has a USB A plug. The Hotel has a USB A plug. The combination USB outlet I found at Home Depot is USB A. Virtually every wired mouse and keyboard made is USB A. The only place USB C is at all common is the Apple Store.

USB A is the standard. It may change in the future, but it will take a long time. Apple putting USB C ports on its computers doesn't magically change the rest of the world. As someone mentioned above, though, except for high power devices like MacBooks, it really doesn't matter for charging. You had a USB A to lightning (or Mini USB or micro USB or...)  cable. If it doesn't need more than 12W, it really doesn't matter if the other end is USB A or USB C. This is also a reason it will take a long time to change. For the majority of uses, people don't need the power capacity of USB C. It's not unlike coming out with 220V appliances and expecting everyone to start putting 220V plugs in their homes.

USB C is clearly more flexible than USB A - higher power capacity, the ability to handle thunderbolt data in the same port. the problem is, USB C cables are not all the same and can be spec'd differently, so your USB C cable may work for charging but not for thunderbolt or vice versa, essentially adding a whole lot of confusion to the picture.