Public bug reported:
I finally managed to get a working dualboot with Ubuntu 12.04 and
Windows 7. This has been a real struggle unfortunately. This process
should be improved and in my opinion this bug should be critical for
many PC's are shipped with windows installed on gpt partitions and UEFI
defaults to on in BIOS.
How i finally managed to install was:
- Problem 1
I donwloaded the 32-bit version of Ubuntu which does not support UEFI
install. I always install 32-bit due to better support for some
applications. The website does not tell that for UEFI i have to download
the 64 bit version.
- Problem 2
The installation medium (in my case USB) has to be started with the UEFI
prefix.
- Problem 3
Could not install Ubuntu for the installer did not see my windows installation
and existing gpt partitions. It wanted to install on the full hard drive space!
By doing so, i would have destroyed both my windows installation and recovery
partition! This is very serious for inexperienced users! I had to find a way to
let the installer see windows. After a lot of searching forums i found a (not
ideal) solution: Removing the recovery partition of windows. Apparantly the
last X blocks of a hard drive should be available for Ubuntu to see windows
installed. After i removed the recovery partition, in the windows partitioner,
Ubuntu installed just fine on a partition i wanted to use.
- Problem 4
Grub was installed and this is nice, but windows did not start up. I got
the message 'invalid EFI path'. After searching the forums i downloaded
an application called "boot-repair". This application took care of all
the, very complex, details of setting up the grub bootloader. I now
enjoy a dualboot with windows and Ubuntu. Both are working just fine.
It's a pity that installing Ubuntu next to windows is such a struggle.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity (not installed)
ProcVersionSignature: Ubuntu 3.5.0-10.10-generic 3.5.1
Uname: Linux 3.5.0-10-generic x86_64
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
Date: Thu Aug 16 01:30:40 2012
EcryptfsInUse: Yes
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed
boot=casper quiet splash --
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
ProcEnviron:
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubiquity (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise running-unity ubiquity-2.10.16
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https://bugs.launchpad.net/bugs/1037351
Title:
dual booting with UEFI (EFI) and windows and gpt partitions and grub
is a real struggle
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