Ubuntu :: Grub2 Boot After Deleting Non-boot Partition?
Aug 14, 2010
I'm as big a fan of Linux as Linus Torvalds himself but it's things like this that help to keep Linux from becoming mainstream. I mean, how would I ever explain the need for the following procedure to a non-techie type, recent or prospective Ubuntu convert? The following is not a question, as I have finally resolved the issue but is more of a rant, I guess you could say. The reasons that I decided to post it are:
1) To hopefully help someone else experiencing this issue.
2) To point out the need for significant improvement in the area of editing partitions under Ubuntu Linux.
3) To vent my spleen.
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Feb 15, 2010
After installing karmic with Grub2 I am unable to boot into Archlinux partition. Grub2 has removed the last line of the Archlinux boot stanza! It used to read:-
[Code]....
Following the Grub2 tutorials I have tried editing /etc/grub.d/40_custom as follows:-
[Code]....
But no luck. Only way into Archlinux is to get into the edit shell and manually add the missing line and remove other stuff not needed. I have spent hours trying to resolve this issue and I am fairly p----d off
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Oct 17, 2009
I have my hard drive partitioned into 3 partitions with one operating system on each partition, as follows:Windows XP
Windows 7
Slackware 13.0
I want to delete the Windows XP partition to free up space on my hard drive, but I'm afraid that it will corrupt or delete the LILO bootloader and prevent me from loading either of the other 2 operating systems.What should I do? Can I save and restore the bootloader and its configuration somehow?
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Sep 2, 2010
I have just bought a new computer and I want to partition it to be dual booting as I have done a few times in the past.
Currently (alternatively, see attached screenshot):
There are three partitions:
/dev/sda1: FAT16 DellUtility (takes very little space and is of no concern)
/dev/sda2: ntfs RECOVERY (takes up 17.58GB and is marked boot)
/dev/sda3: ntfs OS (the rest of the computer, on which windows is currently installed)
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it is safe to delete the current boot partition. I am also not quite clear on when the recovery partition would be used and whether it is really all that necessary (18GB doing nothing seems like a lot to me). Should I make a system recovery media for windows before repartitioning? Also, I am not sure which type of ext partition to use. Finally, I am not sure how big to make the swap space. I think I recall the normal rule being twice the RAM (6GB RAM in my case), but 12GB swap space seems like a lot. Although I do sometimes run memory intensive programs (simulations for research). I normally use other computers for such simulations since they have far more RAM than my computer can possibly have even with a large swap space.
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Oct 29, 2010
I was dual booting windows 7 with opensuse 11.3 and then realized I wasn't ever using Opensuse. I then deleted the partition it was in and now I cannot boot into windows. Grub immediately takes over upon booting but doesn't detect any partitions. I tried booting from an opensuse cd and changing the boot order priority, but grub still comes up. I don't have a windows 7 installation disc
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Aug 30, 2011
I am currently running a dual boot machine with Ubuntu 11.04 and Windows Vista.Is there any way I can delete the Linux partition and Grub boot loader without affecting the Windows partition at all?I would also like to be able to repartition all of the space that was previously occupied by Linux.
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Feb 10, 2010
I recently got a netbook and setup as dual boot between win7 starter and 9.10 (64bit). Win 7 starter is not impressive so i want to nuke it and give the space all to my /USR partion. I am comfortable working with Gparted and assume that i can launch using my gparted live usb and delete the windows partion and then resize the /usr partion.
what changes do i need to make w/ Grub2? I would prefer not to see the Grub menu at all and have it load right the main kernel if possible. Also, if this is possible is there a way to get to the Grub menu during boot should i need to select a different kernel?
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Mar 6, 2011
I was yesterday evening experimenting inserting a script into /boot/grub/grub.cfg. Well I broke grub.cfg and had to try to boot from a grub2 prompt.I have separate /boot and / partitions on /dev/sda1 and /dev/sda2 respectively.Working out the correct syntax for the boot to work was a little complicated, so I thought it would be useful to post the correct procedure here, in case anyone else has the same set up that I do (separate /boot and / partitions)At the grub prompt code:
grub> set prefix=(hd0,1)/grub
grub> insmod linux
grub> set root=(hd0,2)
[code].....
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Mar 7, 2010
i initilally installed ubuntu 9.10 then installed windows 7 ,then i recovered grub2 using livecd as told in the post [URL] i did "sudo update-grub" and got windows 7 menu entry but when i select that entry windows 7 does not load but the grub2 is reloaded again.
i cant boot to windows 7.
Windows 7 have 100 mb partition "System Reserved" the grub2 points to that partition but still windows 7 not loaded.
sudo fdisk -l
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x3c3a81f5
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May 17, 2010
I went through so many post but I haven't found the proper answer yet hope you have an Idea1. Grub2 saves only Linux OS as last selected no Windows OS2.It is possible to boot into a cdrom (drive)?
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Sep 11, 2010
I'm using Truecrypt to encrypt my Windows 7 OS. I also have unencrypted Ubuntu 10.04 installed on /dev/sda6 on the same hard drive. Since Truecrypt bootloader must be installed in MBR, I have GRUB2 installed on /dev/sda6, so I can use TC bootloader to load GRUB2. When I first install GRUB2 on /dev/sda6, I can use TC bootloader to load Ubuntu. But, if I boot into Windows via TC bootloader, and then later try to boot into Ubuntu, I get the message "no bootable partition found". I have to reinstall GRUB2 onto /dev/sda6, every time after I use windows in order to be able to boot into Ubuntu. It seems that starting Windows somehow overwrites GRUB2. Is there a fix for this?
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Apr 14, 2010
I've set up a triple boot system (Ubuntu Karmic, Windows Vista and OSX86 -- a patched OS X which works on a PC) on a Dell 9200 (C2D 2.13 GHz, 4GB RAM, nVidia G210). I sue Grub2 as the bootloader and update-grub picks up OS X and it boots without any problem.
However, although when booting OS X using its own Darwin bootloader, I can apply the boot option "Graphics Mode"="1680x1050x32" to ensure that I get the screen resolution that I want, when OS X boots from Grub2, the only resolution available is 1024x768 which is disappointing. I have tried adding gfxmode=1650x1050x32 to the OS X section of /boot/grub/grub.cfg in Ubuntu but this does nothing.
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May 21, 2010
I am trying to install a box here where my /storage partition is about 2.5T.I had setup the partitioning with suse, while testing, and all worked well.Now when trying to install CentOs 5.5 it gives me an error, that my boot partition is on a gpt partition and this machine cannot boot that.Also I don't see the option to create XFS partitions from the installer.Can 5.5 support GPT @ install time?
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May 10, 2011
i recently removed the Ubuntu partition in Windows 7. When I try to reboot I am faced with the the grub rescue error where it says no such partition.. I have tried booting Windows 7 from disc and I have even went into my BIOS and it says CD-ROM boot priority.. boot ready then says the grub rescue error again, stating that there is no such partition.
This is really annoying as all the tutorials on the internet say insert Windows 7 then use the recovery tools but I can't even boot any operating system. I have set the BIOS to boot from my CD drive..
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Feb 2, 2011
It seems each time I select 'restart later' after downloading updates I get extra lines on my boot screen.The top line works correctly to get me into Ubuntu & the bottom Win. How do I delete the unnecessary lines?
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Mar 7, 2010
I'm running 9.10 off of a 4 GiB CF card. I keep running into space issues with updates, so I purchased an 8 GiB replacement card. I've cloned the 4 GiB card to a .IMG file using DD.I've then copied the 4 GiB image back to the 8 GiB card using the Ubuntu startup disk creator program. Once done, I'm able to properly boot off of the new 8 GiB clone.Unfortunately, the clone ends up with 3.67 GiB of unallocated space at the end *see attached). I tried deleting the "extended" partition that the swap is located at after booting from a Live CD and the system was unable to boot after this. I was thinking that I would delete the swap entirely and create a swap file after I merged the existing partitions, but I was unable to do this.
best way to do this (e.g. get one large 8 GiB partition with my old image on it)? I still have the original untouched 4 GiB card and also have an external CF drive if I need to redo the cloning. I've also used Clonezilla before, so perhaps there's a way to do this that allow me to grow the image as it's being cloned.
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Dec 6, 2010
I am building a 10.04.1LTS server. I am putting the /root filesystem into a Software RAID1 partition. I want to keeo my /boot partition outside of RAID.Is there a way to have a boot partition on both sda and sdb so if one drive fails the second boot partition will work away - or should this be kept in with RAID also.
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Nov 9, 2010
My laptop can't boot from cdrom becouse it is broken and it can't boot from USB becouse it has never been able. Ubuntu 8.10 now run in my laptop withgrub 1.I've just try the following trick.1) I put grub4dos in /boot2) I put iso image in /boot3) I add the follwing entrt in source.list
Code:
# =========== GRUB4GOS ===================================
title == Use grub4dos for the following entries: ==
[code]....
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Jan 5, 2011
if having a boot partition is recommended for dual boot installation of Ubuntu 10.04 and Windows 7 and why?
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Jun 2, 2010
I have my laptop NC6910p from HP with windows 7 and Ubuntu lucid as dual boot managed by grub loader.
Yesterday I made a mistake and formated the ubuntu partition as ntfs with a windows media because I needed to do a test in that partition. Now, off course, when I boot the computer is not finding GRUB and naturally not booting to windows.
I tried to boot with ubuntu live cd and did the apt-get install ms-sys but it just does not find the package. I can browse the windows files and all of that.
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Jul 25, 2011
I received an alarm on a server stating that the /boot partition was 90% used. The partition contains several old kernels so I removed all but the current and previous 2 known stable versions using apt. This did not purge the files from the /boot partition.The /boot partition still contains the kernel files for 12 old versions. Is it safe to delete these files after the kernel has been removed using apt? Below is the output of the /boot partition.
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Feb 14, 2010
GNU GRUB 0.97
Ubuntu 8.04.4
2.6.24-26
Added an SSD (dev/sdc) and decided to move some less often changed directories there. Started with /usr and /boot, leaving / on a primary in the first drive, for now. All started ok, and my changed fstab mounted the right ones, and the system works.
However, grub is actually using the original /boot on / on sda1. I cannot see any way to change this. (Which makes it sorta hard to update the kernel
From grub:
Okay, since it has two choices, I tried to tell it which one to use. But, grub> root (hd2,5) does nothing.
Disk /dev/sda:
what I seem to recall, grub doesn't care about the boot flag on the disk. Nor does it care about primary vs. logical (except GNU doc says "makeactive" only works on a primary?).
The GNU doc also indicates that it looks for a directory /boot on the partition, so if you're mounting a partition as /boot, it also needs to contain a /boot directory under it. Tried that, but no change.
Is my problem the logical partition? Does that prevent "grub> root" from changing it? I'm afraid to wipe out the old /boot and find that I can't start up.
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Mar 13, 2010
My most recent F11 -> F12 was a near-fiasco, because I had the bad luck of foolishly having two distinct physical drives in the same system, where the /(root) partition on each drive had exact same UUID (result of partition cloning and neglect to change the UUID on the copy)
BUT! the UUID redundancy was not the initial trigger of my problems (its near-disastrousness played itself out only while I was REMEDYING the initial problem). The initial trigger: insufficient space on my /boot partition. "preupgrade" neglected to properly assess the space and/or warn me about it before proceeding.
In addition, the automatic cycling out of grub kernel entries came to bite me (part of many factors of the near-fiasco) because after the unfinished upgrade i had only one working kernel left to boot into, until I messed up that remaining one (too long a story), and then grub-install messed up my booting because of duplicate UUID. At any rate, at the end of what looked like a good preupgrade-reboot-upgrade-package-install process the post-install phase lingered a looong time, then I found myself booted into the old Fedora 11 kernel with absolutely NO modules (corresponding /lib/modules had been erased by the upgrade!) Somehow the system ran, but no USB, no wifi, no ethernet, no way to easily place the right kernel rpm onto the hard drive (had to unscrew the drive,etc., to copy over the correct kernel rpm). (Plus, file /boot/preupgrade/vmlinuz, left over from the arrested upgrade, was NOT the right target upgrade kernel version (2.6.32.9-70.fc12), so it didn't help either because it didn't have its modules either. The target /lib/modules (version 2.6.32.9-70.fc12) WERE there, but the kernel itself was NOT, due to upgrade running out of space on the /boot partition).
(Oh, and the preupgrade/upgrade had deleted my /var/cache/yum/preupgrade/ packages; hence my inability to quickly (re)install the 2.6.32.9-70.fc12 kernel rpm -- why!? it hadn't successfully finished the process!)
(Also, FWIW, i ended up rescuing the system through "rpm -i --force <kernel>", many an F12 rescue boot, chrooting, /boot/grub/grub.conf & fstab edits, tune2fs/uuidgen, running grub on command-line ("setup (hd0)"), etc., etc.)
So, any tips out there on phasing out the old-school /boot partition scheme, the safest and easiest way (without destroying a working system, of course)?
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Jun 27, 2011
I meet a problem about "Your boot partition is on a disk using the GPT partitioning Scheme but this machines cannot boot using GPT." in installation. Does GRUB-0.97 on CentOS 5.4 support GPT?
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May 19, 2011
I just did a fresh install of 11.4 and I LOVE IT!!! One of the little issues I am having though, is that there is no login screen. No matter what settings I change it still auto-logs me in.
I am using GRUB and the Boot Loader Location has both "Boot from MBR" and "Boot from Root Partition". Is this right? I would think that I should just boot from the MBR.
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Mar 10, 2010
I have Intel Pentium3 motherboard model 845GVSR with 40 GB Hard Drive, DVD/CD ROM and 4 USB slots but no Floppy Drive.My PC was working fine until I deleted the contents of hard drive accidentally using trial version of killer software.I ried to install Linux by making a boot-able CD, but it did not work.Then i tried to make a boot-able USB using Universal Notebook Installer, it did not work either. I just get the Error " Error loading operating system.Then I tried a free software from net by the name James Format Tools - DOS on USB. Using this computer did boot but DOS did not install and I got the error message "invalid drive specification".I understand that now I will have to write boot sector afresh and will have to Format the hard drive,, but how to do this as all my attempts to get to the hard drive failed
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Feb 17, 2010
i had ubuntu 9.04 on my netbook, and i tossed windows XP on an empty partition, and now i cant quite figure out what to add to the boot.ini to give me the option to boot from the the ubuntu partition.
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Mar 7, 2011
I'm currently having a problem trying to remove the black screen that appears at Start-Up that asks me which operating system I want to run...I've already deleted wubi but this screen keeps appearing every time my computer starts up...How do I remove or disable this feature?
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May 6, 2010
I'm having an odd dual-boot problem. Briefly, I can't boot Windows XP from its entry on the GRUB2 menu. If I set the disk order in BIOS so that the machine boots off the drive with Windows XP, XP starts normally. However, if I boot off the Ubuntu drive, which brings up the GRUB2 menu, choosing the "Windows 7 loader" option (why it says Windows 7 when there's only Windows XP is another question!) just makes my system reboot.
It appears there's some problem with the way GRUB2 attempts to start Windows XP. I'm also wondering why GRUB2 thinks it sees the Windows 7 loader. There shouldn't be any Windows 7 anything anywhere. I once had a Windows 7 RC install on the same disk as Windows XP, but I wiped the Windows 7 system partition and reallocated its space as just another NTFS partition. FWIW, GRUB2 is installed on the MBR of the disk containing my Ubuntu install. Windows XP has a different drive all to itself.
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Oct 27, 2010
I upgraded a while back to Windows 7. I run two separate HDDs, with debian on sda and windows on sdb.Everything worked fine, up until i upgraded to windows 7. The installer forced me to unplug sda and make sdb primary. After installing I repositioned the HDDs and was stuck with a "NTLDR is Missing" messageAfter removing the search -fs--uuid tag from grub.cfg, Windows 7 booted for a good 0.5 sec and then rebooted. All that flashed was the "Starting Windows" page. I see similar bugs reported in the launchpad, but nothing that directly parallels this Here's my windows entry in grub.cfg:
Code:
menuentry "Microsoft Windows 7 Ultimate (on /dev/sdb1)" {
insmod ntfs
[code]....
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