Ubuntu Installation :: MBR - Replace GNU Grub With NTLDR
Feb 23, 2010
I have installed Ubuntu 9.10 on my system. At the time I wasn't very familiar with boot loaders and I just left everything default at installation. Now I have the following setup on the hard drive:
- MBR: GNU GRUB
- Partition 1 (dev/sda1) Sony Vaio Recovery Partition
- Partition 2 (dev/sda2) Windows XP Home Edition
- Partition 3 (dev/sda3) Extended Partition
- (dev/sda5) Ubuntu 9.10
- (dev/sda6) Swap Space
I want to replace GNU GRUB in the MBR with NTLDR and add Linux to the NTLDR boot menu but from what I understand I have to install GNU GRUB to the Linux Partition first so NTLDR can chain load it to boot Ubuntu. I have heard of using the ' grub-install ' command in which from what I understand I should use it like this ' grub-install /dev/sda5 ' but I'm not sure.
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Jun 2, 2011
I had Fedora 14 (x86) and Windows XP with Grub Legacy (Grub) for dual boot in my desktop.
I installed Debian and Grub 2 replaced Grub in the MBR.
Must I reinstall F14 to recover Grub as bootloader or is there another lighter way to do it?
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Mar 11, 2011
I wanna install GRUB-1.98 in my UBUNTU9.10, you know 9.10 comes included with GRUB 1.97 beta... but I wanna do a grub-mkpasswd-pbkdf2 and I can't. Due it I want to install GRUB 1.98. Well, the case is I already installed GRUB1.98 and I could do grub-mkpasswd-pbkdf2 but it doesn't work. Cuz when I'm gonna enter WITH "E" just appear a screen when I can write but my login user and my pass doesnt appear..!
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Jul 20, 2010
i don't remember what i did with this old lap top of my, i remember i installed linux on it, then reformatted the HD to NTFS trying to installed windows. I believed it was successfully installed and never used it since. just recently, i brought it out and want to install ubuntu. now when i turn it on, it just give me NTLDR is missing error message.i have tried putting the window XP cd in, using the ubuntu live cd, tried the "ultimate boot cd" trying to erase the whole drive and repartition.
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Jan 14, 2010
I first installed 9.10 from 9.10 Live CD to my Thinkpad X200 selecting not to install its bootloader thinking I could use NTLDR. That did not work at all. Tried bootpart, starting 9.10 from LiveCD to reinstall grup... I gave up and in WinXP, deleted the 9.10 partition and its SWAP partition.
I reinstall 9.10 again into the now freed space.This time I selected to install the bootloader but to /dev/sda5.After completing the installation,I rebooted to WinXP and used bootpart to create the necessart ubuntu.bin and instructions in boot.ini.That did not work. I went into 9.10 live CD again and use dd command to extract the fir 512bytes from /dev/sda5 and place it in a USB drive as ubuntu.bin.Rebooted into WinXP and put this new ubuntu.bin into C:. All I get when booting into Ubuntu is a blank screen...
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Mar 22, 2010
Finally got Ubuntu installed on my machine and now I can not get windows to boot from GRUB.My windows partition is located at /dev/sda2 and here is my menu.lst file.When I reboot my computer GRUB will not load. It always gives me Error 21. The only way to get it to run is to turn the computer off and then back on.When selecting Windows 7 from the boot list the first time or two it will just send me back to the list after a brief blank screen then around the 3rd time I select it, it tells me NTLDR is missing.
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Jan 20, 2011
I need to know how to get fix my windows xp system without messing with Ubuntu. I can get inti Ubuntu but on windows it says NTLDR is missing dose anyone know what I can do because I still use windows once in awhile so it needs to work.
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Dec 27, 2010
Six months ago I installed Ubuntu 10.04 to my otherwise Win XP work laptop. I decided to continue to use Windows' boot loader as primary: I told the Ubuntu installer to put grub2 onto a separate partition, then used dd to copy the first 512 bytes into a file in my Windows C partition, then edited boot.ini to link to it - its a common technique that is described in many support forums and blogs. This worked fine, and continued to work until a few weeks ago. One day I chose the Ubuntu option at the Windows boot loader and got a blinking cursor at top left of screen and no grub2 menu. I was able to use SuperGrub2Disk to discover and boot from my grub2 install - so that didn't appear to be broken. I finally fixed it by dd'ing a fresh copy of the first 512 bytes of my /boot partition over to the Windows C partition. So somehow the Windows boot loader decided it no longer liked my original dd'ed file.
The only things I can think of that might have changed and caused this to happen are (on Ubuntu) an update to security packages using the graphical update manager that pops up (I rarely do a command line apt-get upgrade/dist-upgrade and certainly not in this time frame) and (on Windows) a Windows Update - as it is a work laptop I tend to take whatever essential updates it suggests. As you can see I managed to fix the problem. However does anybody have any similar experience or any explanation why this may have happened? Could an over-zealous Windows Update have caused it?
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Jul 19, 2010
how to replace grub2 with grub-legacy hassle-free? I mean, is there any danger in doing the following procedure: purging grub2 and installing the legacy version after that? I'm using Squeeze system with ext4.
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Aug 23, 2010
I dual booted Ubuntu with Win XP, and decided to upgrade XP to Win7. Thought I knew how to do it, so excuse my dumbness. Here's where I'm at: I booted GParted, and deleted the /, /home and swap partitions, making unallocated space. I expanded Win XP partition and tried to re-boot, expecting only Windows to show. Instead, I got the Error 22 error when Grub was the first thing to load. So, back to GParted, deleted the primary partition, created a new bootable partition, formatted it NTFS, and put the Win7 disk and rebooted. This time I got a Windows error "can't load NTLdr".
Rebooted the computer without the disk, and got the Error 22 again. So it seems (?) that I'm not able to change/remove or otherwise, the Grub boot file. So the drive is currently useless, unless someone can tell me how to get the disk back to a bootable state where I can load Win7, after which I can create Ubuntu as a dual boot again.
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Jun 20, 2010
I have seen grub2 wreck the system console screen display, be dependant on files in /etc/default and /etc/grub.d and be exteamely hard to configure. Even worse Grub2 settings are distribution dependent and distribution specific.
Something single like vga=nnnn in grub2 involves something akin to these commands in grub2 "set gfxmode=1280x800 set gfxpayload=keep insmod gfxterm insmod vbe" and editing far too many files. I have a steady flickering screen loaded during boot because Ubuntu's usplash image is larger than 640x480 and the vga size is 640x480. Grub2 is reluctant to be anything but user friendly.
Practical question: Does anyone know of a guide that could change grub2 back into the useful and user friendly grub (menu.lst).
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Jan 28, 2010
To understand, I have two partitions in my hard disk laptop, one for data and the other one for windows xp and I also have a extern usb hard disk, this one for ubuntu. What I want to do is to boot Windows with GRUB starter without having to connect the USB hard disk (the hard disk where is ubuntu installed) to laptop. Because when I try to do it without USB hard disk connected, my laptop say "ERROR" and I would like don't be changing from grub starter to windows starter and from windows starter to grub starter each time I want to be with linux or windows isn't the usb disk. Is there any way to relocate the grub files to the internal disk laptop and start up Windows without the external USB hard disk (that has Ubuntu installed). Can I do that all necessary to carry out when I'll start up my laptop (for start up with linux and windows) be found in the data partition laptop hard disk and don't be found in the usb disk? How can I do that replace?
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Mar 1, 2010
I am also wanting to install on a laptop which is about 2 years old. I get the error message "ntldr is missing" when it boots up and doesnt recognise the disc even though it is set to boot from cd first!
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Aug 4, 2010
I can't access my grub menu (by pressing space bar on boot) to select a kernel to boot from, and I need to boot into 2.6.31 to fix an intel chip issue. How can I replace the current 2.6.32x kernel with 2.6.31, so it is the ONLY option grub can boot up with?
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Aug 5, 2010
My CPU is i5 760, motherboard is GA-P55A-UD3R, and VGA is GTX460. I installed the WINXP as my first OS with no problem and the performance is nice. Then it turn to CentOS5.4, everything seem good during installation. However, when the installation done and first reboot, I meet problems like "NTLDR missing", so both of WINXP and CentOS can't boot.
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Jun 21, 2011
I have used the following
Code: #Don't change this comment - YaST2 identifier: Original name: none# title Ubuntu 10.04 booting via symlinks kernel (hd0,6)/vmlinuz root=/dev/disk/by-id/ata-ST9500325AS_6VE3ZHX6-part7 ro quiet splash initrd (hd0,6)/initrd.img for Ubuntu for some time. Can this symlinks-booting technique (with the appropriate partition numbers/names) be used for LinuxMint and/or Fedora ?
Currently, I have one PC with Ubuntu's GRUB2 managing multiple distros (openSUSE 11.3 and 11.4, Ubuntu, Linux Mint and Fedora) with Windows 7. I would like to replace it with the openSUSE GRUB, and the Ubuntu, LinuxMint and Fedora are rarely used.
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May 28, 2010
I recently replaced a failed graphics card w/ a GT 240. Next thing I know, Fedora 11 won't boot up properly. I guess it was a driver issue. I can tell you I went about fixing it all wrong because I wiped the FC11 partition (intending to install FC13) and now I can't boot anything up. My system consists of: sda1 vista, sdb1 XP, sdb5 extended, sdb6 Fedora. I thought grub was on the fedora partition, but reinstalling fedora with grub on that partition didn't fix the boot up problem. Do I need to replace the windows boot loader on sda1 with grub when installing fedora?
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May 1, 2010
I am brand new to Ubuntu and i tried to dual boot winxp and unbuntu 10.04 and the first time failed so i had to reinstall Ubuntu both times thouh i got an error when trying to boot xp that said NTLDR is missing press ctrl alt delete to restart and now i cant access windows
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Mar 10, 2010
Recently upgraded to latest ubuntu release, dual booting windows and ubuntu. Got the gist of ubuntu quickly, thought to go ahead and delete the windows data in my partition. Evidentally didnt have it partitioned correctly, as the next time I rebooted, I recieved an "NTLDR is missing Ctrl+Alt+Del." message. I cannot reboot from a bootpatch usb/cd, as I took out everything pertaining to windows allready. However, I know that this can't be a hardware problem. Is there a way to fix BIOS to operate from ubuntu? Or did I pretty much hose myself?
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Jul 11, 2011
I recently installed Ubuntu and wanted to remove the Windows XP installation is was dual booted with (I used Wubi to install Ubuntu), but I ended up just editing boot.ini to remove it from the boot menu and automatically boot in to Ubuntu. But then, Ubuntu started playing up and keeps on popping up with the Critical Temperature warning, saying it's 80-100C although it's the first time it's been turned on in 14 hours... But to add to my confusion, when I try to boot from ANY disk, it comes up with "NTLDR is missing" and a restart message.
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Jul 29, 2011
I am trying to install ubuntu 11.04 from a live cd on a recently formatted 80gb hard drive. Ubuntu seemed to hang and become unresponsive after waits exceeding 40 minutes. As I had some difficulty creating the media, burning the iso to disc, I attempted to install a couple other distros, mint and xubuntu, to see if they worked. These displayed the NTLDR missing message and prompted me to restart.
PC: pentium 4 2.93 ghz processor
80 gb hd
512mb RAM
lite on dvd/cd burner
There is a working 150gb hd with xp on it set as the #2 hd in bios. I would like to install a linux-based os on the smaller drive, preferably ubuntu, but am growing a little impatient. Is there a bootloader or anything I will need to install, and what should be the final configuration of the two hard drives once I get another os installed on the hd dedicated to it?
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Jul 2, 2010
My internal is sda windows = sda1 recovery = sda2 my external is sdb storage = sdb1 linux sdb2 GRUB is on sdb2's first sector. I tried coping it to grub.mbr on sda1 and added C:grub.mbr="ubuntu linux" all I get when selecting it is _ blinking and no booting. USB booting from BIOS works but I don't want family to have to mess with unplugging and replugging it when they want to boot to Windows. I also tried installing GRUB2 to MBR of sdb and copying same problem.
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Aug 8, 2010
I got this message today after cleaning out the inside of my computer. Didn't really mess with anything. Booted into Windows XP just fine, had to restart for an update. Burg loaded, I selected Windows and I get:
"NTLDR is missing. Press CTRL-ALT-DEL to restart." WTF? Windows breaks itself. Great. My ubuntu install works just fine. I have 2 separate hard drives, with one OS on each. I can't access the other drive from ubuntu. It says
Unable to mount location Error mounting: mount exited with exit code 13: Index entry out of bounds in directory inode 5. Failed to mount '/dev/sda1': Input/output error NTFS is either inconsistent, or there is a hardware fault, or it's a SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows then reboot into Windows twice. The usage of the /f parameter is very important! If the device is a SoftRAID/FakeRAID then first activate it and mount a different device under the /dev/mapper/ directory, (e.g. /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation for more details.
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Jan 18, 2010
I have a machine which i have to test with a live version of ubuntu 9.10. I used a usb pendrive for some time but it failed after rebooting a few times. Now i try to install a live version on a external HD of 160 GB.
I installed the ubuntu 9.10 with unetbootin on the external HD. When I boot from the HD I get the error: NTLDR is Missing. Is it possible to install of load the ubuntu 9.10 version on a external HD. I found some stuff about
- using another USB stick with the live version and install from that USB to the external HD.
- using the live cd to install. But I don't have a CD drive on the machine.
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Jul 15, 2009
I am trying to load RHEL 5.2 into VMWare 6.5 running on (dare i say it) XP SP2 As soon as it boots from DVD I get "NTLDR is Missing".Does anyone know if this a RHEL related problem, a VMWare problem, or an XP problem? I just need pointed in right direction.
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Apr 23, 2011
Can the Replace function replace more than one word with the same character(s)?
Also, do you know how to access the plugins provided by the gedit-plugins package?
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Jul 1, 2010
In my dual boot system , I am not able to boot for windos XP and getting the following message.
Booting 'XP'
rootnoverify (hd0,0)
chainloader +1
NTLDR missing
Press any Key to restart
System has redhat Linux and windows XP installed.
Quote:
/boot/grub/device.map
/boot/grub/grub.conf
/boot/grub/menu.lst
[code]....
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Mar 13, 2011
I have vista and ubuntu 10.04 LTS loaded on my disk. i upgraded to ubuntu 10.04 LTS from the earlier version, after that i started using MTS Mblaze usb broadband stick as wired connections were not available. In order to get my usb stick working i messed up the ubuntu settings and now even wired connections are not working. i am frustrated and would like to replace it with 10.10 as it has MTS Mblaze default settings. In any case i never like the look and feel of 10.04 as compared to earlier versions. I have made the bootable CD for 10.10, but now how do i go about installation so as to replace 10.04. I do not want to disturb my vista as there is lot of crucial data.
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Jan 11, 2010
I have ububtu install via wubi. i want to change the install and TOTALLY replace it still using wubi. Is there anything special i have to do so that i don't end up with 2 wubi installs or 3 options on my boot list?
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May 20, 2010
Posting this thread using the DEMO variant of 10.04, congrats to the developers that it didn't fail like that of 9.10 for all those who have configured their Modems & Routers to work in 'Bridge Mode'!
Here's my concern:::
I wish to immediately replace my 12GB partition, currently kept aside for 9.04 with 10.04.How to accomplish the same? Installation screen does comes up with 'Manual' preference, but it is confusing & am unable to make any decision owing to great excitement!?
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