Download Big Sur To External Drive

by -75 views

  • #26

I recommend reporting it to Apple with information about your machine. Permit’due south make it a known outcome
:)

Good thought, I’ll do that! It’southward weird considering I can boot a Catalina book just fine using the same external drive. Perhaps a issues in the firmware that gets updated past Big Sur in relation to our machines. I’m using a 2020 13″ MacBook Pro if that makes any departure.

  • #28

When y’all download the large sur installer on the internal storage and when the estimator starts can you choose what drive to install it to?

Yep, simply at to the lowest degree for some of us, it hasn’t worked. But the option is there
[automerge]1593102616[/automerge]

Good idea, I’ll practise that! It’s weird because I tin can boot a Catalina volume simply fine using the same external drive. Mayhap a bug in the firmware that gets updated by Big Sur in relation to our machines. I’m using a 2020 13″ MacBook Pro if that makes any difference.

Yeah, I can too. Just based on my investigations that’s non what the issue is. From what I could tell, it seems like information technology installs fine to the external volume merely that in one case yous endeavour booting it, the kernel attempts to locate its files on /dev/disk0 instead of the device you installed to.

I am on a 2014. Since someone else has said they take information technology working on an external drive, my current suspicion is that it depends on the bulldoze interface. My external bulldoze is a USB 3.0 SSD. information technology might piece of work with Thunderbolt or something.

bige12


  • #29

I just kind of afraid of doing it that way that I mention since if you tin can not choose and then you are risking the main computer
[automerge]1593103471[/automerge]
i just sent some feed back to apple

Last edited:

  • #30

I just kind of afraid of doing information technology that way that I mention since if you can non choose so you are risking the primary calculator

Makes perfect sense. – I wouldn’t recommend even starting without a backup though. Even when yous tin cull in that location’s ever a hazard with a beta specially, that the installer didn’t catch the hint. – I initially tried installing to my external SSD that didn’t work as mentioned. Merely it was split up into several volumes, and in addition to not properly installing to the volume I chose, it as well nuked the sectionalization table destroying the other volumes. Though I think that’s because it got dislocated that I had the GRUB boot loader on in that location. But yeah you lot can choose and when I picked the external deejay it didn’t touch the internal one at all

  • #33

I tried to install if from the primary drive and select and still got the same error BIErrorDomain mistake 8.

Redownload, createInstallMedia, wipe bulldoze to HFS+ (HFS+ install seemed to work better for me; Installer converts to APFS) install.

  • #37

I was able to download the installer, and tried to install to a 64gb USB3 flashdrive.
It got all the way to “less than a minute remaining”… and stayed there for a LONG time.
Wouldn’t get any further.

Same problem for me and with a 64gb USB 3 stick.
Left the Macbook all night running with aforementioned message equally you.
In the morning I tried to start with the USB considering the message disappeared and I suppose that finally was installed, only it freezes and does non start.

  • #39

RE Donhugo’s answer 37 above:
I’m going to -guess- that the USB flashdrive won’t boot because somehow the installer won’t properly “bless” the newly-created install “as a bootable drive”. I seemed to get some kind of error that suggested that.

I may just expect for the public beta in a few weeks and effort again.

  • #41

I had to get into the Security settings in MacOS recovery. I turned the two bulleted options OFF. I left firmware password alone. The first option was regarding signed vs. non-signed Os installs and the second for allowing bootable media.

Afterward turning all that off I was finally able to get Big Sur to install on an External Samsung T5.

  • #42

I had to go into the Security settings in MacOS recovery. I turned the two bulleted options OFF. I left firmware countersign solitary. The first selection was regarding signed vs. not-signed OS installs and the second for allowing bootable media.
Afterward turning all that off I was finally able to get Big Sur to install on an External Samsung T5.

Those options are relevant only on Macs with a T2 bit; Just good tip for those who have T2-Macs

  • #44

I had to become into the Security settings in MacOS recovery. I turned the two bulleted options OFF. I left firmware password lonely. The showtime option was regarding signed vs. non-signed Bone installs and the 2nd for allowing bootable media.
Subsequently turning all that off I was finally able to get Big Sur to install on an External Samsung T5.

I take it you did this with a Mac that has the T2 chip?

Source: https://forums.macrumors.com/threads/trying-to-install-macos-big-sur-on-a-external-hard.2242404/page-2