Fix Windows MBR without Removing Grub
location: ubuntuforums.com - date: November 22, 2009
I have a Vista/Ubuntu dual boot on my laptop. The first time I installed Ubuntu, I couldn't boot into Vista. I fixed that by using the Vista Recovery disk to repair the MBR. When I rebooted, grub disappeared. My friend fixed it and all was well.
Five days later, I'm using Ubuntu and I was prompted to update some parts of it by the Update Manager. When I rebooted, grub wouldn't let me boot into Vista. So here's my question: Is there a way to fix the Windows MBR in the Ubuntu terminal without removing Grub?
Thanks in advance.
Removing Grub from MBR, Windows RE not working
location: ubuntuforums.com - date: March 21, 2014
I posted this in a windows 7 forum, but the only response told me to ask those experienced with linux on how to restore the mbr using the backup of the MBR that ubuntu makes.
The original post:
"So, my original issue was that after installing an ubuntu partition on my computer, windows 7 would not go to sleep. After research I presumed this was caused by GRUB being installed in the windows MBR. I then made a system repair disk to run the fix boot and fix mbr commands. However, when I boot from the repair disk no operating systems are listed under the recovery option. If I try and proceed anyway to the command prompt, it won't let me type in the command prompt. I am unsure of what I should try next. I can still access my regular Windows 7 partition fine though."
I also tried using the F8 option when booting Windows and that had the same problem. Is there any way to restore the original MBR through ubuntu? Thanks for any help.
[SOLVED] Fedora: Need help removing GRUB from the mbr from within Linux
location: linuxquestions.com - date: November 23, 2009
I have a dual-boot system with XP and Fedora, and recently applied updates to WinXP, which caused XP to give the BSOD on startup. I would like to wipe XP and reload from scratch, but the reload image is on a separate partition that I cannot access with GRUB installed. I don't have a DOS startup disk, and cannot get far enough into windows to use the fdisk /mbr option. I found a suggestion to use:
$ dd if=/dev/null of=/dev/hda bs=446 count=1
but when I use it, I get 0 Bytes copied, and no joy on reboot. I just need to disable GRUB long enough to get access to my restore partition and re-install windows. I'm a rank newbie with linux (and just switched over to Fedora from Mandriva), and would really appreciate as much detail as possible.
removing grub from MBR of a flash drive
location: linuxquestions.com - date: November 29, 2009
I have a flash drive that i used on my old netbook to temporally hold a copy of ubuntu as the netbooks internal drive was dead.
i have since got a new netbook and wanted to return the flash drive to simple removable storage
ive re-partitioned it back to 14gb fat32 2gb ext2 and everything is working fine
except that if i try to boot with the key inserted grub loads then errors imminently (sort of obious if grub is still in the MBR but there is no menu.lst file anymore...)
googleing for removal of GRUB just gives me loads of hits for how to restore windows mbrs when you dont want to keep linux anymore...
none of these methods seem to have any targeting.
i need to remove grub from sdb while keeping it intact in sda
sdb shouldn't even be bootable, so that when boot from usb is higher in the bios than boot from hdd the usb key is ingnored and the hdd is booted as normal.
removing GRUB from MBR
location: linuxquestions.com - date: July 25, 2005
I currently have a my computer set up to dual-boot Windows XP and Fedora Core 3. Each OS is on its own hdd(XP on the master and fedora on the slave). I am in the process of building a new computer w/ a single SATA drive. The cd that came w/ the SATA drive has a utility to copy everything from my old hdd onto the SATA drive. I would like to do this, since reinstalling everything would take some time. However I would need to use the "fixmbr" command to restore the MBR. The hard drive that contains XP has 2 partitions. My questions are:
a) would "fixmbr" mess up my partitions?
b) would I use "fixmbr" on both partitions?
c) is Fedora Core 3 compatible w/ SATA?
Hopefully somebody can answer these questions. I would appreciate any feedback, comments, or questions
[SOLVED] Fedora: Need help removing GRUB from the mbr from within Linux Page 2
location: linuxquestions.com - date: January 20, 2010
Google led me to this thread. After booting from a Debian-based live USB, I "sudo -s" to root before running "dd if=/dev/null of=/dev/sda bs=440 count=1" to remove the Master Boot Code while leaving the Partition Table alone, but this command did nothing ("0 bytes copied").
Has someone seen this, knows the cause, and some possible cure?
Removing GRUB and restorung MBR
location: linuxquestions.com - date: April 4, 2003
I have a problem I need to know if it is possible to remove GRUB and restore the master boot record from the GRUB command line itself.
I know there are other ways to fix this, but my situation is a bit odd. The machine this is all happenning on has a broken CD-Rom (just happened) so I can not use my WindowsXP CD to run the recovery console to restore the MBR. The Linux partitions have been deleted, so now GRUB is booting directly into it's command line. Runnint the boot command tells me that the kernel must be loaded first
Believe it or not, there is also no flopply drive on this machine So, I know I can get my machine back by taking the time to either replace the CDrom ot Installing a floppy, but I am hoping there is a way to avoid this and GRUB itself will let me do it.
Thanks in advance
Removing grub from MBR
location: linuxquestions.com - date: April 20, 2007
I have grub on MBR on my laptop, y want to pass my laptop to my mother, she uses win. I dont know how to erase MBR. My laptop only has cd, no disket, I use to boot with a system disk and format it. How can I do it now?
problems with formatting second disc after removing grub from mbr
location: linuxquestions.com - date: August 2, 2003
i have uninstalled grub from mbr (via xpīs recovery console), and now i canīt format my second harddrive (the one which i had linux mandrake on).
i did see the warning of course, in windows xp recovery console - that overwriting the "non-standard" functioning mbr might lead to accessproblems, but i chose to ignore that...
my problem is that i want to format my second drive into ntfs-file system, and now i wonder: do i have to reinstall grub in order to do that - to make it accessible from xp, and then format it before i remove grub? or is there any other way around this? thanx for help
Help removing grub from ubuntu live "cd"
location: ubuntuforums.com - date: February 6, 2011
So here's the thing, I installed ubuntu from a usb, it installed ubuntu good, but i had some problems with drivers ATI and I tought that maybe was because of the usb, so I've decided to wait to get my dvd-burner back, because I have an original cd of ubuntu 10.04 and I was going to use it, so I uninstalled ubuntu from windows 7 (... I just deleted the partition for ubuntu) now I'm having problems at the boot because the grub still there, for the moment I don't have dvd-burner and because of that I can't repair windows 7
What I can do maybe: Install ubuntu again from the usb, that should fix the grub giving me the ability of select OS but, there is nothing that I can do in ubuntu to uninstall the grub?
sorry for the engrish and thanks for any help
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