How do I select OS from GRUB menu?
You can get GRUB to show the menu even if the default GRUB_HIDDEN_TIMEOUT=0 setting is in effect:
- If your computer uses BIOS for booting, then hold down the Shift key while GRUB is loading to get the boot menu.
- If your computer uses UEFI for booting, press Esc several times while GRUB is loading to get the boot menu.
How do I switch to another operating system?
To change the default OS Setting in Windows:
- In Windows, choose Start > Control Panel.
- Open the Startup Disk control panel.
- Select the startup disk with the operating system you want to use by default.
- If you want to start up that operating system now, click Restart.
Why is grub not showing up in Windows 10?
If Windows loads then grub is working fine, but not being displayed. This can be resolved by using the ‘out-of-range’ option in the advanced section of boot repair or editing grub manually. According to lines 346 to 348 of the boot info script grub should be displayed.
Where is the Grub boot menu on Windows 10?
On Windows 10, go to the start menu. Search and open Recovery Options. The description for it should say System settings. Under Advanced startup click Restart now. Click Use a device; it’s description should say “Use a USB drive, network connection, or Windows recovery DVD”. Click Ubuntu and hopefully it should take you to the grub boot menu.
Why does dual boot grub not detect Windows 10?
If you have previously had a RAID installed that may be causing issues. In my case, I built my desktop in 2010, and I installed two 1.5 TB with a striped RAID. User gracemercy54 mentions here that this is left over metadata from the former RAID configuration.
How to reinstall Grub from an active system?
To reinstall Grub from an active (not liveCD/DVD/USB only) system – first you need to find the Ubuntu drive (example is sdb, but make sure to use your drive and not a partition). To find it, use From there press enter through the first pages, use spacebar to choose/unchoose the drive, and enter to accept.