Think about if you have any kind of security policies on this machine to prevent writing to external drives (thumb drives, optical drives, etc). Hdiutil: attach failed - no mountable file systems 21:10:17.499 diskimages-helper -remountReturningDictionary: detaching because no mountable filesystems. Here's an example of the end of hdiutil attach -verbose output that shows an APFS error due to an older version of macOS: Mounting… So if you're on macOS Sierra (10.12) or earlier and you ran hdiutil and see references to Apple_APFS or error 112, the issue is likely legitimate incompatibility, and this disk image won't open on this Mac without an update to the operating system. MacOS Sierra (10.12) and earlier is not able to mount the new Apple File System (APFS). This will fill in the location of the dmg file into your Terminal window. Add a space at the end, but don't press enter yet.ĭrag the dmg file from your Finder window onto the Terminal window and let go. Type hdiutil attach -verbose into the terminal. Open Terminal: In Spotlight, the search magnifying glass at the upper right corner of your screen, search for Terminal, and press enter to open the Terminal app. We will at least get some sort of useful error message to go on if it still fails: Try mounting the DMG on the command line in Terminal. Apparently there is an issue sometimes after opening too many dmg files, that is fixed with a reboot. Reboot your Mac if you haven't already tried that. (There's an example of that in my screenshot below.) Or if you don't need to be logged in to the site to download the file and you want to be fancy, you can try curl -O url in Terminal to download the file. You can try downloading the file in a different browser as well. If possible, try downloading the dmg again, turning off any download assistant plug-ins you may have. In most cases, the downloaded dmg file is actually corrupt or had an error downloading. If you see the "no mountable file systems error" while opening a dmg, here's what you should try: The error was as the screenshot above shows trying to open a dmg (disk image), macOS showed the error "no mountable file systems". I didn't find a lot of good search results addressing the issue, so I decided to write up a post about it myself. Make sure that WiFi is set to Native-Plus and Boot Plist patching is enabled.I ran into an interesting macOS error while working with a customer.Once it's done, go back to the Advanced Patches screen.Press Start Unpatch Kexts and let it go.Change the mode from Patch Kexts to Unpatch Kexts.Click Advanced Patches and enter your password.Open Patched Sur and go to the Patch Kexts section.If you update to 11.6.5, the new patch will be used by default.Make sure you've made a new installer usb, you'll get errors if you neither the usb nor the pre-downloaded patches (obtained whenever you update or make a usb) isn't using the latest version.Non-metal Macs can no longer go past the verify stage (instead of just a warning, it just stops them there), not like they were ever supported anyway.You can no longer use the beta track, not enough people use it for me to justify keeping it (I haven't seen any recently), you can still download the beta installers on your own and tell Patched Sur to use those if you want.(It actually looks like it's doing something now) Added a fix to the terrible downloading screen when making an installer.There was many dead links in the patcher that should have been fixed in v1.0.1, but they're fixed now.Possible fix for the big patch kexts error (1x127).New WiFi Patch! Native-Plus is now the new default WiFi patch, the same one from Mini Monterey.You'll have to right click on the app then press open or use System Preferences to launch it.
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