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So I've been trying everything from Boot-Repair to TestDisk to try and fix boot errors after trying to install an older version of Ubuntu. I had both Windows 10 and Ubuntu 18.04 and using grub bootloader before everything went kaboosh, and now they both don't boot.

I'm linking Pastebin info here.

karel
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Karan Vadde
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  • Your boot info indicates it's a UEFI system apparently with all the entries correctly installed in the ESP. So, you should be able to boot either one - Windows alone or Grub with options for Ubuntu and Windows - by selecting the proper options in the boot order at the firmware (UEFI). –  Apr 29 '19 at 12:14
  • You used full drive LVM install which erased Windows.With LVM (and encryption?) you need to mount an encrypted install before running Boot-Repair. You are showing some issues and may need dosfsck on ESP and fsck on your LVM, if it is not just mount issue. https://askubuntu.com/questions/862724/grub2-failed-to-install/865872#865872 & this shows running fsck on LVM, just skip resize commands. https://askubuntu.com/questions/262211/how-do-i-resize-an-encrypted-lvm-to-install-another-copy-of-ubuntu – oldfred Apr 29 '19 at 14:19

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