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There is so much going on with your operating system and in the comments, I would take the USB drive to another computer to test it. Then you can have possibly two follow on questions. One to address erasing a USB or knowing it is flakey. A second question where you ask how to get your Mac in a desired state. (Like how to erase install macOS.)


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OS X El Capitan has a recovery partition which is used to reinstall OS X on your Mac should you need it. Instead of using the .pkg, You can try copying the entire contents of your recovery partition to your USB. After formatting the USB as macOS Extended, go to OS X Recovery by pressing Command + R. Then, unmount all volumes except the Recovery partition and ...


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I also had this issue until I looked into the Speakers Properties > Advanced tab and saw that it was set to a 24 bit quality, changed it to my macOS default (32 bit 44100Hz) and it ran just like on macOS


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That 715.8 GB "Macintosh SSD - Data" looks to be a remnant of Catalina. Catalina creates a System disk and a Data disk and uses firmlinks to make them appear as one drive in Finder. But the System disk is read only. Meanwhile your macOS High Sierra volume is using only that volume for everything. I think if you delete the APFS Volume Macintosh SSD ...


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Open Terminal diskutil list to find the device /dev/diskXX (/dev/disk3, etc) diskutil eject /dev/disk3 sudo dd if=/dev/urandom of=/dev/rdisk3 bs=10m Be patient it may take a while. This should write random data to the Flash drive, effectively wiping it. You should then be able to remove it and re-insert and re-format it however you wish. Some Flash ...


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My issue turned out to be Fusion drive issues that necessitated doing a diskutil resetFusion and blowing EVERYTHING away, recreate the APFS container, and reload. Painful, but I now have a Windows partition running. And yes, Bootcamp Assistant totally ignored everything but the APFS container. Closest thing I could find to my issue: https://support.apple.com/...


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Did you try all the sdcards after a full power cycle on/off/on? On many Macbook models, it's a known bug that it's not accessable after Windows goes to sleep without fully powering off. https://discussions.apple.com/thread/8038937 I recommend you fully reboot the laptop before trying to read the sdcard.


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Your guess is correct. The 2017 model Macs can only EFI boot Windows. Since the first partition on the external drive starts at sector 2, the drive does not have the space to convert from a MBR partition table scheme to a GUID partition table (GPT) scheme. This means you would need to restart the installation process. When installing Windows 10, I would ...


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I finally found a way to solve this issue: First in OSX, I installed the "Latest Windows support software from Apple" on a USB flash drive via Utilities -> Boot Camp Assistant. Then in Windows, I reinstalled the missing audio driver using the BootCamp.msi installation file located in WindowsSupport/BootCamp/Drivers/Apple in said USB flash drive. ...


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The instructions, you have linked to, install Windows to EFI boot. The Boot Camp drivers provide by Apple were designed for a BIOS booting Windows. In other words, you need to hybrid partition the drive and the instructions explicitly insure the drive is using a fully protected MBR. If you can select EFI Boot of the Windows 10 installation flash drive from ...


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The problem was the file system. (Thanks to @MatthewBarclay for the hint) It seems that one need to use APFS. I installed a fresh copy of OSX and then everything worked fine


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I solved it by following the instructions in the link below, but in my case I used: sudo diskutil apfs resizeContainer disk1s2 0 Lost space after removing bootcamp


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You should be able to install to an external drive. There are two popular methods to install Ubuntu on your Mac's external drive. The first one is to use default Ubuntu installer option where you use the entire drive. This method does not use rEFInd, unetbootin or the ubiquity -b option. Basically, you use the Mac Startup Manager, Etcher, and Grub. The ...


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I was trying to install Boot Camp using macOS Big Sur. For some reason, Beta 1 installed some Snapshots on the Macintosh HD volume that prevented the disk from being partitioned. I did eventually get it working, but the solution did not come from me. Credit goes to user tomadimitrie on the Mac Rumors forums who found the solution. First I booted into macOS ...


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