Ubuntu Installation :: Grub2 Menu Not Showing New Entry For FreeBSD
Jan 11, 2011
I've just installed FreeBSD 8.1 on /dev/sda4 (FreeBSD slice), without installing the boot loader from FreeBSD (I've selected None when prompted for boot loader in sysinstall). Now I want to use my existing Grub2 from already installed Ubuntu 10.10 to boot FreeBSD also.
After some reading, I've added to the end of /etc/grub.d/40_custom:
After running sudo update-grub, grup.cfg file shows my new entry. The problem is that after restart, I don't see the new entry in the grub menu.
Another question, If i used chainloader +1, that means I need to have the FreeBSD bootloader installed also on /dev/sda4 right? For chainloading booloaders?
I didn't get to that step, I first want to see the entry in the menu.
Any idea what I might be missing/misdoing? (I also checked for blank spaces in the menuentry like the wiki for grub2 says)
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Mar 4, 2010
I recently upgraded grub -> grub2 on my karmic box. Grub2 worked when chainloaded from legacy grub, and also the first time I tried it standalone. Both times the grub2 menu came up.
I ran vbeinfo at a grub2 command prompt, and found my monitor's native res listed - 1280x1024. I added that to my /etc/defaults/grub and then ran update-grub, and rebooted. This time no menu appeared and the default entry booted straight away. I suspected that the resolution was not supported for some reason or that the way I entered it in the config file was wrong, so I commented it out again in /etc/default/grub, and ran update-grub again - to no avail.
I have since tried lots of different formats for the GRUB_GFXMODE, such as 1280x1024@24, 1280x1024x24, and the normal 640x480, but none of them give me a grub menu. I have even tried using GRUB_TERMINAL=console, to no avail. I have checked the /boot/grub/grub.cfg file each time to make sure my changes were put there correctly by update-grub. I have also made sure that timeout was set to 10, and the hidden timeout was set to 0. My GRUB_CMDLINE_LINUX_DEFAULT="quiet".
I have reinstalled grub2, grub-pc, and grub-common, and I have dpkg-reconfigured them all too. I have no idea what to do to get my grub menu showing up again.
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May 6, 2011
Having just upgraded to Ubuntu 11.04 from 10.10 I noticed that my Grub menu had not upgraded. The upgrade was not as straight forward as it should have been as the PC hung at the end of the installation resulting in a reboot and running dpkg in safe mode to get it all back up and running.
To fix the incorrect grub menu.lst file which was not updating, I renamed the original file and then ran sudo update-grub. It generated a new and correct file. However, my Windows partition was not listed as a Grub menu option.
[Code]...
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Nov 16, 2010
I'm experiencing an unusual problem. I have my grub2 configuration set to show no menu. However, sometimes it still shows and waits for input for no apparent reason. On a regular PC this wouldn't be much of a problem but on this particular machine I must make sure grub2 always loads Ubuntu without hanging.
I'm using Ubuntu 10.10 and the Grub2 installed package is 1.98+20100804-5ubuntu3.
My grub configuration is as follows (and I have ran update-grub after changing it):
Code:
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Nov 24, 2010
After upgrading to 10.10 the grub boot menu stopped showing up. I made a custom menu in grub.d and update grub finds everything, but when I restart my system the boot menu never shows. I should have two kernels. How do I get the boot menu to show every time I restart my system?
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Jan 24, 2010
When I originally installed Ubuntu 9.10 64 bit, I had the following operating systems already installed:
Kubuntu 9.04
Windows 7
Windows XP
Ubuntu automagically created a GRUB2 menu that offered all of these, plus of course itself, which was fine for a while.
Later on, I deleted and reformatted the partitions that had been dedicated to Kubuntu 9.04. GRUB2 has failed to keep up. Despite running "sudo update-grub" multiple times, the GRUB2 menu continues to show entries for Kubuntu 9.04.
How do I get rid of these obsolete entries? The partitions it was on simply do not exist any longer, so I don't know how GRUB2 is picking it up.
I had already edited my fstab file to reflect the new partitioning scheme, so I don't know where GRUB2 is getting the idea that I still have Kubuntu 9.04 installed.
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Jan 17, 2010
Here is my current setup. I have installed Windows 7 Home Premium 64-bit, Ubuntu 9.10 64-bit, and BackTrack 4 Final in that order. All operating systems are able to boot and all is working well. The only problem I'm faced with is really just an annoyance. Which is BackTrack is showing up with a "Ubuntu 8.10" entry name.
Now I did some research on this. I found out that BackTrack was based on the Ubuntu 8.10 OS so it makes sense why it would show up that way. I found several articles and topics explaining how to modify the GRUB programming files. I guess to change the entry name, but all of them don't seem fool proof to me nor the best way to go about doing things.
One thing I wasn't able to find info on is where GRUB2 actually gets these entry names from. My theory is if I can find out where GRUB gets this info from, I can simply log into the BackTrack partition and change where the "Ubuntu 8.10" entry is to "BackTrack 4" and then run the update-grub2 command within Ubuntu to update the entry names.
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Sep 5, 2010
I want to install FreeBSD (PC-BSD) alongside Ubuntu 10.04 and Windows 7. I do not have a CD or a DVD or a USB key to burn the .iso, so I was thinking instead of using Grub2 to launch it.
I created an empty partition where FreeBSD will be installed (see screnshot below).
Now, where should I locate the .iso file? On my root partition? On my home partition? On the new partition (ZFS formatted)? Does it matter?
How should I set up my Grub2? I was thinking of adding this to /etc/grub.d/40_custom (if the partition where the .iso is located is /Home):
Quote:
menuentry "FreeBSD" {
insmod loopback
insmod iso9660
set isofile="~/iso/PCBSD8.0-x86-DVD.iso"
loopback loop (hd0,1)$isofile
}
Is it correct... and enough info?
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Aug 17, 2010
Ive installed a fresh copy of ubuntu onto my laptop, dual boot with 7. Everything runs smoothly except the grub. So in grub i have an entry of vista loader. I have removed the ubuntu recovery mode and the memtest entry so now i have 3 entries
Ubuntu
vista loader
7 loader
How i can remove the vista loader? PS i have never had installed vista onto my system i bought it brandy new with 7 pre-installed.
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Jun 22, 2011
GRUB2 replaced the boot entry for Windows 7 when I installed Windows XP. I tried to create my own menu entry for Windows XP but it seamed to me that it was superseded by the Windows 7 boot loader. I have a brand new desktop PC - Core i7 processor, 2 TB hard drive, 6 GB RAM.
I don't know how to bring back a menu entry that was over written / Superseded by another OS being detected by update-grub; in this case Windows 7. I installed Ubuntu 11.04 at the end of many other Linux OS's. So it is a Multi-boot setup. Basically Windows XP has replaced the Windows 7 boot entry in the GRUB 2 Boot menu after running update-grub.
Then to get Windows 7 back I booted off the Windows 7 Install DVD and used the boot repair option. This then changed the working Windows XP Boot Loader to boot Windows 7 which I wanted but there was a catch. Windows XP didn't boot any more because it was replaced / Superseded. The Linux OS's boot fine.
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Jan 17, 2011
I'm having trouble configuring grub2 to boot freebsd. I know how to do it in grub, but grub2 is giving me grief.
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Jan 20, 2011
wanted to try out FreeBSD but I want to boot it from an ISO. I put my iso file on my first hd 3rd partition in /boot/iso/FreeBSD-8.1-RELEASE-amd64-dvd1.iso. But I can't seem find anything to boot freebsd this way. Is it possible and if so how. This is what I kinda got but its not working.
Code:
menuentry "FreeBSD1" {
insmod loopback
[code]...
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Nov 6, 2010
I have two partition in my netbook (plus swap):
/dev/sda4 with Ubuntu 10.4 /dev/sda5 with Centos 5.5
I use Ubuntu obviously. Centos is there because I need to run some test on that distro. The problem is Centos uses Grub and Ubuntu uses Grub2.
This is /boot/grub/menu.lst from Centos:
Code:
default=0 timeout=5 splashimage=(hd0,4)/boot/grub/splash.xpm.gz
title CentOS (2.6.18-194.17.4.el5xen)
root (hd0,4)
kernel /boot/xen.gz-2.6.18-194.17.4.el5
module /boot/vmlinuz-2.6.18-194.17.4.el5xen ro root=LABEL=/1 rhgb quiet
module /boot/initrd-2.6.18-194.17.4.el5xen.img .....
This was generated running update-grub2 and grub-install under Ubuntu. It's not working. It gives me something like bad magic number. How can I convert the grub1 entry in a grub2 shape?
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May 29, 2010
I have a working Ubuntu install with the Grub2 bootloader. I need to manually add an entry to boot Fedora 13 off of sda. Sda1 is the boot partition, sda2 is LVM. None of the examples I've tried work. I do also have F13 grub installed on sda, but chainloading to it didn't do anything other than a blinking cursor.
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Mar 10, 2010
Update Mgr got me a bunch of updates today, including a kernel (2.6.31-20). I was doing something else, and when it prompted me to do something with menu.lst, I accidentally accepted the default, which I think was to keep menu.lst unchanged.
As a result, the new kernel was installed but not added to menu.lst, so I guess I can't boot to it.
Is there a way to tell my computer, "make the entries into menu.lst automatically"
I guess I could put the entries in manually, but as a beginner, I'm pretty scared to be messing with that file...perhaps if someone has a link to an exceptionally understandable explanation...
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Apr 2, 2010
i just installed ubuntu 9.10 netbook remix, i made a partition (sda6) for it, first i had only opensuse, and when i was installing ubuntu, i put the bootloader in (sda6) the Opensuse bootloader is installed on MBR,
[code]...
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Feb 24, 2011
I could not seem to find any documentation on how to chage the X anf y coordinated of the grub 2 menu in order to place it in a differrent location on the screen and change is its size (not resolution), remove border.
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Feb 19, 2011
I have installed Sabayon 5.4 on my laptop besides Ubuntu 10.10. During installation of Sabayon I did not opt for a bootloader as I did not want to disturb the already existing Grub2 on MBR from my Ubuntu installation.After successful installation of Sabayon, I booted into Ubuntu and updated the Grub which detected Sabayon correctly. Then I rebooted and tried to boot into Sabayon but I could not do so. The booting process stopped with the following error -
Code:
Activating mdev
Detected real-root as md device. Setting up device node
Scanning for Volume Groups
[code]....
So evidently, Grub has wrongly taken the values of root as /dev/md0 and swap as /dev/sda2.I again went back to Grub2 screen edited the Sabayon entry by replacing /dev/md0- with /dev/sda4 and swap:/dev/sda2 with swap:/dev/sda8 and pressed Ctrl+x. Now I was able to boot into Sabayon. how do I make these changes permanent. Which files should I edit so that Grub correctly read root as /dev/sda4 and swap as /dev/sda8?
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Apr 29, 2010
I want to install more than on linux distribution on one computer (and the computer has Windows XP, too). How do you make a master grub2 installation that is in its own partition and that has entries that chainload different linux distributions that may have grub2 or grub?
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Jun 3, 2010
I have Koala with Grub 2, working fine. Just did some updates and now the boot menu is getting long, too many kernels. Want to reduce to the last two kernels plus Win XP, so got online and looked for instructions in English. News flash: Nobody seems to care about this issue, there is absolutely nothing to be found on it for Grub 2. There is a SIMPLE command for Grub, "howmany", in menulst. Menulst is not used in Grub 2, so that's out. OK I give up, after searching for over an hour for Grub 2's equivalent. Maybe someone here knows how it's done? IN ENGLISH please, not "sudo I am an intelligent BEGINNER. The Grub 2 page says: "GRUB 2 allows users to create customized menu selections which will be automatically added to the main menu when sudo update-grub is executed." Note the word ADDED. What about REMOVING? Does anyone want to bother themselves with addressing this issue? I read somewhere StartUpManager can do this. Application Finder doesn't show StartUpManager on my machine, and reading about it at [URL].. as it seems to be Grub-1 related. I don't get the impression it will do what I want for Grub 2. If it does, they should say so, right??
I could remove the older kernels, but would rather just edit the boot menu. I found this for removing kernels: Open synaptic, do a search for "linux-image" and then remove the older kernels from your computer. Removing them via synaptic will remove them from the boot menu as well. Keep the kernel you are currently using plus one older one you know works. To find your current kernel: uname -r OK so I open synaptic and do the search. It comes up with maybe 200 files, some of which start with linux-image, scattered throughout the list. Oh boy, let a newbie loose on this. Just select and delete them all, why not? I can't tell one from another, the only difference is a cryptic number that means not one whit to me. There has to be a better way!
I got brave after editing etc/default/grub and doing update-grub, which reported the kernels by number, which I had forgotten. Then went back into Synaptic and hit the 'Sort By Installed' divider, which brought all the installed kernels to the top, where they make sense. Then I selected the two lowest-numbered and shot them in the head. They are gone.
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Jun 25, 2010
I upgraded my main box to Ubuntu 10.04 and everything runs fine, except for a problem with grub: I can't modify the boot menu in any way, I'm stuck with what grub2 thought was the optimal setup at installation time (and it got it wrong, btw). The current boot menu lists:
- my older 9.10 install in sdb2 (one kernel)
- legacy windows XP install on sda1
- my even older 9.04 install in sdb1 (two kernel versions)
- my new install in sdb3, with only one kernel (the one coming with the distro CD)
I tried anything I could think of to modify this menu:
- modify the /etc grub config file then running sudo update-grub
- using a specific app (system manager? don't remember its name)
- upgrading to the latest kernel
- removing and reinstalling grub
to no avail: the menu is still there in the above form, and I have to manually select the 10.04 (old) kernel by hand every time I reboot.
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Oct 22, 2010
i have been running Kubuntu 10.04 on my primary hard drive, and i have a second 1.5TB HD that i use for storage. so shrunk the secondary HD partition and created a second 50GB partition and i installed Ubuntu 10.10 on it and told it to rewrite the mbr on my primary HD. Where i am at: i took the menu entry from my Kubuntu "grub.cfg" and the entry from my Ubuntu "grub.cfg" and put them in the 40_custom file. so now when i boot-up my computer, it shows both installations at the bottom of Grub2s menu list. with all the menu entries that Grub automatically adds.
What i would like to know is how do i make it so that the Grub2 menu only shows the entries that i add to the 40_Custom file and not the randomly generated list aswell.
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Dec 28, 2010
how I can setup the grub2 menu so that it does not timeout? What do I need to set in the configuration file? I did it once before on my old computer but forget now what I changed.
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Jan 29, 2011
I'd like have some text written on my grub2 boot menu.
In legacy grub you could just add: title Foobar and you'd get "Foobar" displayed.
I tried: menuitem "Foobar" {} grub2, but it doesn't work. Any ideas how do you do something like that?
(Yes, I know writing grub.cfg by hand is not very smart. But I have a special situation: I wrote my own grub.cfg on a dedicated boot partition from where I chainload to other grub on other partitions. Those secondary grubs generate their grub.cfgs on the fly, so everything is OK )
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Feb 28, 2011
I installed Win7 on a 2-disk RAID0 fakeraid. I then unplugged those drives and installed linux mint on a separate drive. I did it this way because if I left the drives plugged in, linux would jack up the fakeraid for those drives and make windows upbootable, and installing linux to the fakeraid itself is just too much of a PITA. So basically, this is the disk configuration, and there's no chance of me changing it.
Right now, I can boot into either win7 or mint by pressing F12 for the boot menu, and then selecting the drive the os is installed on. It would be nice if I could just add an entry to the grub menu for win7. I've used the menu.lst file before, but apparently all that has changed with grub2. I've checked out some of the grub2 docs and poked around in /etc/grub.d, but frankly, it seems to be orders of magnitude more complicated than it should be.
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May 18, 2011
GRUB2 does not show Windows-XP Pro in the menu anymore.
Probably already posted before; however each case usually is somehow different. I use Ubuntu only occasionally to learn how it works.
After the latest update using Update Manager, quite a few packages were installed without any problem. However GRUB2 does not show the Windows-XP(Prof) partition in the menu anymore. Now I can't boot Windows because I can't select what is not shown.
1. This what I get with command "sudo fdisk -l" (in the present situation)
georges@PC1:~$ sudo fdisk -l
[sudo] password for georges:
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
[Code]....
It is already the second time that GRUB2 changes the menu items as it pleases, messing up the bootmenu. How can I repair the bootmenu in order to be able to boot Windows-XP, as before the updates ?
The current Ubuntu version is now 10.4 LTS The current GRUB version is "GNU GRUB version 1.98 Ubuntu10"
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Jun 23, 2011
is it possible in grub2, that a temporary default entry. For example i have 2 menuentry in grub.cfg 0 & 1. my default is 0 but i want to automatically boot once to 1 and it changes back to 0.
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Sep 12, 2010
I have dual-booted Windows XP and Ubuntu. Because Ubuntu 10.04 doesn't have the required proprietary drivers for my system, I chose Ubuntu 8.04. The installation procedure went well, the drivers are there, everything's perfect but... there's a problem with the GRUB menu that appears just after launching my laptop.
When I first installed Ubuntu it showed Ubuntu (and some letters and numbers), another instance for recovery mode, some memory test lines (I guess there are two of them) and Windows XP.
But after I used the software updater in Ubuntu (to make it up-to-date), the grub bootloader shows two more lines - and those are the same as the first two - Ubuntu (with some letters and symbols) and Ubuntu recovery mode.
Why are those duplicates there? I've never installed another Ubuntu OS on my PC. Because at the moment I have two Ubuntu and two Ubuntu recovery mode lines .
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May 6, 2011
I just installed ubuntu 11.04 via wubi. the installation appears to have gone well but ubuntu doesnt appear as an OS choice when i boot up.
Its not a timeout issue as it is set to 30sec and i can see my other options (windows and a recovery option). the only thing i can think of is that my computer has a separate partition set up for recovery and i think that is screwing things up.
Here is my boot.ini:
My only guess is that since the recovery partition is the first partition that its causing problems.
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Feb 5, 2010
I have Ubuntu 9.10, PuppyLinux431 and Windows XP on a Toshiba laptop. I like Ubuntu, but the speed of PuppyLinux is addictive, so that was my default boot until I upgraded Ubuntu which included an upgrade to Grub2.
My problem: Grub2 doesn't recognise PuppyLinux. Using information from [url] I have made an executable file named 07_Puppy in /etc/grub.d and did update-grub from root. Still no luck. I can boot PuppyLinux from the grub command line using the following commands:
Just before grub displays the boot menu, I think I see a very brief message about a syntax error, but it's gone before I can read it.
Here is the contents of my grub.cfg:
Quote:
Why Grub2 doesn't see Puppy and let me boot it from the menu?
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