If you're running low, open up the Apple menu, click 'About this Mac' then go to Storage > Manage and free up some disk space there. To make sure you do, open up the Apple menu and click on 'About This Mac.' Select 'Storage' then check to make sure you have enough space on your hard drive. Typically, a macOS download fails if you do not have enough storage space available on your Mac. If it has a green dot, then there's no issue, but other colors suggest there's a problem with Apple delivering the update.Īs you can see from the screenshot above, there had been issues with the software update at the time of writing, which have since been resolved.Īnother reason could be that you simply do not have enough space on your computer. There should be a section labelled 'macOS Software Update'. ![]() You can also check the live status of the Apple Server (opens in new tab) to make sure everything is alright on Apple's end. If you think this is the case, try again later on a non-peak time to see if the download works then. It may be because a lot of people are trying to download macOS Big Sur at the same time. There are a few reasons why you may encounter this issue. That content can’t be downloaded at this time. Installation requires downloading important content. A few get the following error message: “Installation of macOS could not continue. ![]() Others, on the other hand, are seeing "The network connection was lost" error messages when they try to download macOS Big Sur. One of the most common macOS 11 Big Sur problems that people have encountered is that macOS 11 fails to download, with some users seeing an error message that says "Installation failed." How to fix macOS Big Sur download problems For those of you sticking with us, let's take a look at the most common macOS 11 Big Sur Problems and exactly how to solve them. Or, if you’re ready to take the leap to the next OS, check out how to download macOS 12 Monterey. Reading hardware information from command line with built-in tools.If you haven’t grabbed Big Sur yet, take a look at our how to download and install macOS 11 Big Sur guide.The above article and the script it contains was designed for Mac OS X 10.4.3. This article, get sensor information, shows how to use ioreg to extract the fan speed information with: ioreg -c IOHWSensor | grep -B3 -A11 '"type" = "fanspeed"' See Can I get the CPU temperature and fan speed from the command line in OS X? Pre-Mac OS X 10.5 Other tools and applications exist, including Temperature Monitor. This is a computationally expensive process, even when run for one second. Spindump requires administrator privileges and when run manually, spindump samples user and kernel stacks for every process in the system. ![]() ![]() This article, OS X: Current CPU temperature on command line, talks about the project and how to extract the fan speed: smc -k TC0D -r | sed 's/.*bytes \(.*\))/\1/' |sed 's/\(*\)/0x\1/g' | perl -ne 'chomp ($low,$high) = split(/ /) print (((hex($low)*256) hex($high))/4/64) print "C\n" ' The open source project Fan Control includes a command line tool that provides fan speed information. It appears no tool, installed by default on OS X, exposes this information through the terminal. Since Mac OS X 10.5, you need to use a third party piece of software to access the fan speed information. See the smc manual page for more options. You can use smc to get fan speed information via Terminal.app: smc -f You mention in your comments having smcFanControl installed this open source project includes the command line tool smc.
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