![]() ![]() It asked for the password to unlock the drive, and it strangely accepted it, and then it said something like "can't downgrade this machine" and it stopped. ![]() I also tried, just to see if it works, from the Utility menu in Recovery Mode, the Reinstall Big Sur menu option. I may be a bit patient as I'd prefer to make sure I run out of all the other options before formatting and installing from scratch. What is the instruction to do this manually in terminal? Then I restarted, but I could not get to the point where it asks me to create a new admin account. Did not fine the mentioned file to remove, but did could be due to the fact that I probably removed it in previous attempts. Tried booting in single user mode with Cmd+R, but don't know if it worked or not as I did not see any lines scrolling during bootup as mentioned in the article. I tried the procedure in that link, but doesn't seam to work for me. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation.Yes, issues started when attempting to upgrade from 11.2 to 11.2.1. Have found this method more reliable than the Software Update which is very iffy at bestĪre there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. ![]() If desired - have an External Drive - Copy & Paste the Install Big Sur Application to external drive for future usage - making a Bootable Installer. Stop there and perform a Time Machine Backup. Eventually, Full Installer will download and a New Application in Applications Folder will present called Install Big Sur. Same goes for clock at 10 minutes could be 20 minutes in Real time. Countdown clock may say 15 minutes but in Real time may be 30 minutes. It will take some time and several pauses will occur - normal. People downloaded 'MacOS Big Sur' Beta version have reported that startup chime is back now. Q2: MacOS Big Sur: The startup chime is back. If the data is important, backup all your data. Once Logged in - open Apple Apps Store and Get the Full Version of Big Sur. Q1: MacOS Big Sur - Login 'hanging' All you need to do is boot your Mac on the recovery mode and reinstall the new OS, after erasing your hard drive. It does a Repair Disk, Clear System Cache files and only load Apple Software, extensions and Fonts. If via Wifi - Disconnect all other Devices using the Wifi - want the Maximum Bandwidth only for this computer. Shutdown computer and disconnect all External Drives. For M1 CPU the Recovery Mode is Hereģ - This method may seem unnecessary but sometimes the Router Restart clears Network issues from ISP to Apple Servers It too will download the full Installer and commence the installation. It will be the 11.5 version and once downloaded run the installer from the Applications folder.Ģ - Resart the computer in Recovery Mode ( INTEL Command + r ) and choose Reinstall macOS. 1update.ġ - Connect to Router via Ethernet connection and restart the computer in Safe Mode and then open the Apple Apps Store and get the Full Installer of Big Sur. There are several ways to download the Big Sur 11.5. There are factors like poor Wifi connection, slow wifi connection, too many other people downloading at the same time and Apple Severs are overloaded, Software on the computer interfering with the download process including AntiVirus Software, running behind a VPN and or / if via wifi too many Other devices using the wifi at the same time reducing the Bandwidth to you computer.īest Results are via Ethernet Cable to Router If this update is for Big Sur 11.5.1 - the error message can be misleading.
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