Installation troubles

Questions about Grub, UEFI,the liveCD and the installer
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Installation troubles

Postby jfmanamtr on Wed Feb 03, 2010 12:41 pm

Ok. I am trying to install Linux Mint 8 & Windows 7 on a different PC. I have a 250 GB SATA HDD that I am partitioning it so that the 2 OSs are each on a 40 GB partition & have a 150 GB for the data. I installed Windows 7 first. I setup the 40 GB for the OS & the 150 GB for the data, leaving the 40 GB for Linux Mint 8. I then started up the LiveCD & installed Linux Mint 8. After the iinstall finishes, I reboot the PC, but the computer boots into Windows 7 without starting up GRUB. I open windows disk manager & it shows 2 partions that I am assuming are the Linux Mint 8 install (/ & swap). So, any ideas on how to get grub installed so that I can run both OSs?

~John
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Re: Installation troubles

Postby dwflo on Wed Feb 03, 2010 8:39 pm

Welcome John,

If you are using one disk with two partitions, and Mint is on the second one, it is possible grub may have been installed in that partition, and the system is booting to the Windows partition.
I have encountered this issue myself and learned some installs set grub to a default MBR, that may be incorrect for your setup.
Understanding how drives are mapped during an install, will help in recognizing the correct MBR location for grub.
Hope this will help somewhat, there are others who can explain it better than I.

Dave
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Re: Installation troubles

Postby breaker on Thu Feb 04, 2010 2:44 am

This boils down to the differences between your motherboard hardware order vs. BIOS vs the ACPI order Linux and grub uses. But yes, your grub is most likely not on the mbr of the hard drive Windows uses to boot. Some people just change their BIOS hdd boot order and all is well, give it a shot, also not one must hold down shift at boot to get a boot menu (grub menu).

EDIT: Hold up, this is on a single hard disk? Then I was wrong. Try holding down SHIFT like I said, if that doesn't work, you'll have to reinstall grub (2) with your Live CD: https://help.ubuntu.com/community/Grub2 ... 20GRUB%202

Make sure your device.map is correct before running the grub-install command.
rtfm - read the fine manual...
Boot info script: http://ubuntuforums.org/showthread.php?t=1291280
grub2 https://help.ubuntu.com/community/Grub2
PC-BIOS based booting, mbr, boot records; http://thestarman.pcministry.com/
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