[Bug 486499] Re: Grub2: Windows 7 infinite reboot loop

[En]

*** This bug is a duplicate of bug 475881 ***
    https://bugs.launchpad.net/bugs/475881

None of above solutions worked for me. With these solutions Windows7 boots once, then i have to redo update-grub to make the menuentry work again.
I registered an account here only for comunicate you that I found a definitive solution. I use ubuntu 10.04 but I think that it's ok for all distros.

http://erickoo.wordpress.com/2009/06/14/how-to-add-vista-partition-to-
grub-2-ubuntu-9-10-karmic-koala/

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https://bugs.launchpad.net/bugs/486499

Title:
  Grub2: Windows 7 infinite reboot loop

Status in “grub2” package in Ubuntu:
  Fix Released

Bug description:
  NOTE: This only fixed Windows 7 booting up once. I rebooted after
  reporting this bug and the same problem still persisted. So not even
  this fixes the problem!

  Binary package hint: grub2

  This bug is one of the most annoying I've ever run into. There is a
  work around that I found on Ubuntu. However obviously nothing has been
  done to fix this problem; so I'm reporting it today so it can be fixed
  soon :)

  This bug is ALWAYS repeatable. If you want to confirm it install
  Windows 7 (Vista will work) update grub and reboot. Windows will try
  to start and it'll fail.

  NO THE GRUB2 WORKAROUND LISTED IN THE WIKI DOES NOT WORK!
  (https://wiki.ubuntu.com/Grub2)

  The solution can be found in this thread:

  http://ubuntuforums.org/showthread.php?p=8363434#post8363434

  menuentry "Windows 7 (on /dev/sdb1)" {
        insmod ntfs
        set root=(hd1,1)
        chainloader +1
  }
  (obviously has to be adjusted according to your Windows partition)

  ALSO:

  It IS possible to completely remove grub via Synaptic. Reinstall grub
  add that entry to 40_custom. Update-grub. Then reboot and choose the
  custom boot menu and Windows 7 will reboot fine. However it booting up
  fine only occurs one time.

  ProblemType: Bug
  Architecture: i386
  Date: Sat Nov 21 20:26:31 2009
  DistroRelease: Ubuntu 9.10
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
  NonfreeKernelModules: nvidia
  Package: grub2 1.97~beta4-1ubuntu4
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
  SourcePackage: grub2
  Uname: Linux 2.6.31-14-generic i686
  XsessionErrors:
   (gnome-settings-daemon:1715): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
   (gnome-settings-daemon:1715): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
   (polkit-gnome-authentication-agent-1:1840): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
   (nautilus:1813): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed

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