(The hyperlinks are pictures I took)

I had Windows10 installed in my computer (which is a Lenovo Z70) and I installed ElementaryOS but Grub2 is not recognizing the OS, actually none of them. If I type exit then I get to the Boot Manager and I can find Windows but not Linux.

For the installation I created a swap area (2GB) and an Ext4 file system.

  • first boot into Windows 10 and disable Fast startup/hybird shutdown and also disable secure boot from BIOS, the repair grub – Edward Torvalds Jan 18 '16 at 19:40
  • @edwardtorvalds, fast startup and secure boot were already disabled. You say I need to repair grub now? Any good tutorial on how is it done? – André Santos Jan 18 '16 at 20:07
  • follow this link, install the Boot Repair follow the recommended repair way. this way your boot will be repaired and report back here. NOTE: I have same computer :D – Edward Torvalds Jan 18 '16 at 20:14
  • @edwardtorvalds I dowloaded it and ran recommended repair after my 2nd installation and I got the results into pastebin (paste2.org/BdmVXexk). Yet I don't understand this results... – André Santos Jan 18 '16 at 20:22
  • on which partition you have installed Elementary OS? I cant see any ext4 formatted partition all are ntfs... this means Elementary OS isnt installed. the report says 1 disks with OS, 1 OS : 0 Linux, 0 MacOS, 1 Windows, 0 unknown type OS. – Edward Torvalds Jan 18 '16 at 20:26

After the discussion we had in our chat I think you should check whether the ISO you downloaded is complete and not corrupt which you can do it from here

In your case following things didn't work:

  1. Disabling Secure boot in BIOS and Hybrid shut-down in Windows 10
  2. Reinstalling Elementary OS
  3. Repairing GRUB

The only thing you should do now is check whether your ISO for corruption, if it is corrupted then download the ISO again; which what worked for you

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