All Mac models and devices from 2009 like Mac Book, iMac, and Mac Book Retina and 2010 models such as Mac Mini, Mac Pro, Mac Book Air, and Mac Book Pro are compatible with the MacOS High Sierra. However, if you are unsure which mac os version you're using, you can find it by going to the device information of your Mac, to do this, open the. Storage space on your Mac is precious, especially if you have a 128GB, or even a 256GB SSD. Your Mac can start to slow down and not perform as well when your storage is almost full, so it's. I've run out of disk space (only 425 GB left) and now it won't boot properly. It gets stuck in gray screen and whirly thing going around forever. It started after I tried connecting a router. I had 10 GB free disk space prior to this. I restarted the computer after finding the router connection didn't work and then got the problem.
If you have some basic unix skills, deleting files should be easy otherwise you may be risking data loss by trying this method.
Boot to single user mode holding cmd-s after powering on the computer. KB HT1492 and type the following command making sure there is a space before -uw and the /
mount -uw /
Now you are free to delete whatever you want (including system files, be careful!) Your home folder is located at /Users/
Spaced Out (smith 10) Mac Os Pro
I've found that when the computer gets in this bad of shape, the following commands free up a few GB nicely.
rm -rf '/Library/Application Support/iDVD'
rm -rf '/Library/Application Support/Garageband'
Most people rarely use this additional content and it can easily be reinstalled from the original install discs or iLife disc. It should give you about 3GB of space back, plenty enough to boot the computer and get back to a GUI for you to move your media off onto an external hard drive.
Apr 17, 2011 12:49 AM
macOS Big Sur was officially released for all users in November last year, and since then Apple has released updates with bug fixes and overall improvements. However, as reported by Mr. Macintosh, Big Sur still has a serious issue that can result in data loss when users try to upgrade a Mac to the latest version of the operating system without enough space available.
Spaced Out (smith 10) Mac Os 8
After noticing several reports from users on the web, Mr. Macintosh found out that the macOS Big Sur installer isn't checking whether the Mac's internal storage has enough free space. As the system initiates the update process, the Mac becomes unresponsive, and data can be permanently corrupted.
Apple says upgrading to macOS Big Sur for the first time requires at least 35.5 GB of available storage — and this doesn't include the 13 GB macOS Big Sur installer. Unfortunately, even if your Mac does not have 35.5 GB of storage available, macOS will try to install the Big Sur update, and that's when users may lose all their data.
The update process seems to run perfectly, but users get the following message near the end of the installation:
An error occurred preparing the software update.
From that point on, the Mac will no longer boot. Mr. Macintosh was able to confirm that this bug affects macOS Big Sur 11.2 installer and even macOS Big Sur 11.3 beta installer. At the same time, this doesn't affect OTA updates from one Big Sur installation to another (such as updating from macOS 11.1 to macOS 11.2).
Spaced Out (smithn10) Mac Os Catalina
If you have a backup of your data, you can simply erase the entire disk and reinstall macOS. However, recovering data without a backup can be very difficult.
With FileVault enabled, you have to connect your Mac to another Mac via Target Disk Mode in order to recover your files. If FileVault wasn't enabled on your Mac, you can try to delete some files using the Terminal app in macOS Recovery, which will allow macOS to complete the update process successfully.
Apple hasn't commented on this bug so far, but hopefully it will be fixed with the final release of macOS Big Sur 11.3. You can read more details about this problem on the Mr. Macintosh blog.
With FileVault enabled, you have to connect your Mac to another Mac via Target Disk Mode in order to recover your files. If FileVault wasn't enabled on your Mac, you can try to delete some files using the Terminal app in macOS Recovery, which will allow macOS to complete the update process successfully.
Apple hasn't commented on this bug so far, but hopefully it will be fixed with the final release of macOS Big Sur 11.3. You can read more details about this problem on the Mr. Macintosh blog.
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