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Yesterday I installed Ubuntu onto my 2nd drive (the main drive has Windows 10 on it) but there is no way for me to boot it from it. I tried changing the boot order but that didn't work. Then I tried unplugging my SSD with Windows and only leaving the other disk but it wouldn't boot anything.

Solved!

Boot repair helped me. I removed grub from the system and then installed in on both disks and now I get into the grub menu when booting.

Thank you all for help!

Zanna
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Jakub Michálek
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    What is the brand/model of your computer? – GNULinuxOnboard Sep 18 '19 at 15:09
  • @Jakub Michálek Please collect the model number from the sticker which also has the serial number (don't want serial #, just model#). Please also run lshw | grep -v "loop" in a terminal window. Then, click [edit] and add that with the make and model# to your original question. Please don't use Add Comment, but instead use [edit]. – K7AAY Sep 18 '19 at 15:29
  • May be best to see details, use ppa version with your live installer (2nd option) or any working install, not older Boot-Repair ISO: Please copy & paste link to the Boot-info summary report ( do not post report), the auto fix sometimes can create more issues. https://help.ubuntu.com/community/Boot-Repair Post link above in your original question. – oldfred Sep 18 '19 at 19:40
  • See this answer to work around a possible bug. – user68186 Sep 18 '19 at 20:21
  • @Jakub Please remove what you have done from your question and post an answer instead. – Kulfy Sep 20 '19 at 04:12

2 Answers2

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Have you tried to disable the Windows Fast Startup function?
This has caused me the same problem in the past. Try running this command from the Windows cmd Prompt:

Shutdown.exe -s -t 00

It will shutdown windows completely and if you still don't get the grub menu, then try setting grub as the boot manager for Windows with this cmd:

bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi
zx485
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wraith3690 001
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Try disabling secure boot in your computer’s BIOS. If you didn’t install Ubuntu with an EFI partition, you may need to enable the legacy boot option in BIOS.

GNULinuxOnboard
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