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<blockquote data-quote="VindictiveRabbi" data-source="post: 1762329" data-attributes="member: 393799">Hi there,A few weeks back I dual booted linux and macOS on my macbook (pro mid 2012), and I decided that I did not want linux anymore, then proceeded to uninstall the grub loader and linux. Booted fine the first time back into Sierra, but after another restart a cancel sign started showing up and I wasnt able to get back in the macOS. I tried again and again, and then decided to try and reinstall the OS.My recovery partition did not work so I used internet recovery. I tried to reinstall, I erased my ssd and tried downloading the OS, but much to my despair, it simply would not download. Eventually I created a bootable usb image of Sierra from a friends Mac. Did a fresh reinstall successfully, but when it rebooted: same thing: cancel sign. Tried it again. This time I got to the desktop, then after a day my mac ran out of battery, charged it, rebooted and BAM cancel sign. I believe its an issue with the bootloader, no matter how many times I reinstall the same sign comes up. I have tried first aid on disk util, tried resetting PRAM and NVRAM, tried just about everything. I need a suggestion, getting fed up. Last resort is a firmware reinstallation?Thanks</blockquote>

[QUOTE="VindictiveRabbi, post: 1762329, member: 393799"] Hi there, A few weeks back I dual booted linux and macOS on my macbook (pro mid 2012), and I decided that I did not want linux anymore, then proceeded to uninstall the grub loader and linux. Booted fine the first time back into Sierra, but after another restart a cancel sign started showing up and I wasnt able to get back in the macOS. I tried again and again, and then decided to try and reinstall the OS. My recovery partition did not work so I used internet recovery. I tried to reinstall, I erased my ssd and tried downloading the OS, but much to my despair, it simply would not download. Eventually I created a bootable usb image of Sierra from a friends Mac. Did a fresh reinstall successfully, but when it rebooted: same thing: cancel sign. Tried it again. This time I got to the desktop, then after a day my mac ran out of battery, charged it, rebooted and BAM cancel sign. I believe its an issue with the bootloader, no matter how many times I reinstall the same sign comes up. I have tried first aid on disk util, tried resetting PRAM and NVRAM, tried just about everything. I need a suggestion, getting fed up. Last resort is a firmware reinstallation? Thanks [/QUOTE]

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