Thanks for your answer. I could start the 64 bit Ubuntu on sda1 thanks SuperGrub. I made some further updating on the 64 version and now everything wirks properly.
I guess that, when I installed the 64 bit version, and was required to restart the system, The 64 bit version was expecting to be reactivated (this is often the cas with OSes), but, because of the bug in Grub, the restart activated the 32 bit version. I am sorry not to be more precise on the solution. Best regards 2010/1/29 Steve Langasek <steve.langa...@canonical.com> > Reassigning to grub2, since you say that's the version you have > installed now. > > > There is no menu.lst on sda1. Is it normal ? > > Yes, menu.lst is a config file for grub1. In grub2, grub.cfg supersedes > it. > > ** Package changed: grub (Ubuntu) => grub2 (Ubuntu) > > -- > At boot time, OS are displayed, but no way to select one > https://bugs.launchpad.net/bugs/513854 > You received this bug notification because you are a direct subscriber > of the bug. > > Status in “grub2” package in Ubuntu: New > > Bug description: > Binary package hint: grub > > Hi. > On sdb1 I have Ubuntu 9.10 32 bit upgraded from 9.04. This system is up to > date (updated today as usual) > On sda1, a newly added disk, I installed Ubuntu 9.10 64 bit, from a > downloaded CD > I could not "see" the 64 bit version when rebooting. > I then discovered the problem of grub-legacy and grub2 > I upgraded the 32 bit version to grub 2 > I had the "error 15" problem, but solved it. > > Now, when I boot, I see the list of OS I could select, but I cannot choose > one, because the first one is immediately selected by the system and I have > no time to change it. > > Here below is my grub config: > > # If you change this file, run 'update-grub' afterwards to update > # /boot/grub/grub.cfg. > > GRUB_DEFAULT=0 > #GRUB_HIDDEN_TIMEOUT=0 > GRUB_HIDDEN_TIMEOUT_QUIET=false > GRUB_TIMEOUT=10 > GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` > GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" > GRUB_CMDLINE_LINUX="" > > # Uncomment to disable graphical terminal (grub-pc only) > #GRUB_TERMINAL=console > > # The resolution used on graphical terminal > # note that you can use only modes which your graphic card supports via VBE > # you can see them in real GRUB with the command `vbeinfo' > #GRUB_GFXMODE=640x480 > > # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to > Linux > #GRUB_DISABLE_LINUX_UUID=true > > # Uncomment to disable generation of recovery mode menu entrys > #GRUB_DISABLE_LINUX_RECOVERY="true" > > Thanks for your help > > To unsubscribe from this bug, go to: > https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/513854/+subscribe > -- Jean-Antoine -- At boot time, OS are displayed, but no way to select one https://bugs.launchpad.net/bugs/513854 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
