Big Sur Install Loop

So not only do I get the loop. I can not even try to reinstall it because it is not recognizing my password when I hit Command R it goes to the repair screen. I select reinstall Big Sur and it does not recognize my password at all. I know it is the right password but it does not recognize it.

I would do a Internet boot into recovery, and run Repair on your disk before installing it. Many times the install will run into corrupted files, and hang or "loop". I believe it try's to do a disk repair during the install, but the only way to truly do a repair is by booting off of another source (like internet boot or a external hard drive).

You would have thought Apple engineers might have put a simple size check on the disks before the download even started, let alone letting the install itself fall into an infinite loop. This is basic stuff. I'm amazed that Apple a) haven't put this simple fix in already to warn about the size needed, and b) haven't done something about the bigger issue of needing > 24GB of size to install an OS. That's a lot of memory! However I'm guessing Apple have no interest in fixing this issue otherwise they already would have (it's been months already), as it probably forces people to buy new hardware. A shame.

Does the computer have any third party antivirus, cleaning or any other "maintenance" apps installed?

I’ve exactly the same issue. Have you found a solution yet?

Same problem with Big Sur install crash in an infinite loop reboot on iMac 21,5 Fusion Drive late 2015......

We are expecting Apple to solve thin annoying issue that a lot of users seems to have

I’m having the exact same problem with the same model iMac. Infinite reboot loop. Please do something about this Apple.

Same problem, stuck in a install loop. Get to about 10% and then reboots..again and again and again........ running Catalina on Imac Retina 5k, 27inch, Late 2015

This needs to be fixed.

Hi,

Same Issue with an iMac 2017 21" infinity Loop. Please Help

Installer Big Sur 11.1

Just tried with big sur 11.2.

Same issue! Does anyone from Apple monitor these forums? If so appreciate if you can at recognise there is an issue for folks!

I've also tried with 11.2 and again failed exactly like it did with 11.1. And yep I agree with Jock_King. Someone from Apple needs to look into this.