I'm trying to install openSUSE Leap 42.3 on my Lenovo Y600 laptop, dual boot with windows 10. It insists on booting windows, even after trying to re-install grub2. Perhaps the complicating factor is that I have a small SSD as the primary boot for windows, and Linux is installed on the hard drive.
Details:
1. Fiddle with bios to allow boot from DVD.
- Boot mode: UEFI
- Fast Boot: Disabled
- USB Boot: Enabled
- Move USB boot to occur before hard drive.
2. Install openSUSE (windows boots, no grub appears)
3. Follow guides at section 16.6.2.3 to boot the system, and 16.6.2.4 to re-install grub.
When Linux is booted, I see that the SSD entries in /dev are nvme0, nvme0n1, and nvme0n1p1 through nvme0n1p4. The hard drive is the standard sda1 through sda7, with the root at sda7. Thus, I believe the correct command to install grub is
grub2-install /dev/nvme0n1
Doing this, windows boots after I exit.
If I boot the installation DVD and select "Boot from Hard Disk", I get
error: not a valid boot device.
What next?
Edit: uefi boot not showing ubuntu / GRUB seemed like it might be helpful, but no. efibootmgr seemed to create a new entry, but it did nothing. And the entry was gone next time I booted to Linux.
Edit: I gave up. To install and boot Linux, I modify the bios to turn off UEFI. To get back to windows, I modify the bios again to enable UEFI.
4 Reset to default
