Debian Installation :: Grub Not Seeing Windows Even After Update
Sep 14, 2014
I installed Windows Xp 64bit(in a partition called d:) with dual boot with Debian Wheezy. Installed first Windows Xp and after Debian Wheezy, but grub is not seeing Windows!
Look at my "fdisk -l".
root@robgeek:/home/rob# fdisk -l
Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe274e274
[Code] ....
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Jul 21, 2010
I have been phenomenally unlucky with Ubuntu as seen my my post history and decided to dual boot.
I set it all up with a clean install, when I tried to load Windows from Grub the computer restarted. After much headache I managed to set it up correctly (when it wouldn't load from Grub I booted from the Windows CD and clicked on "Repair computer" and it finally worked).
Now I am having the same problem as before--I think my installed all the updates from Update Manager and it included a grub one. Now I can't load Windows from the grub menu: It goes to the Starting Windows screen and then reboots my computer. If I do it again it gives me an error message and an option to perform "Startup repair". When I try to do Startup Repair, the computer reboots after a few loading screens.
So I tried what worked before and put in my Windows 7 CD, and clicked on Repair Computer. BUT NOW it gives me an error message somewhere along the lines of system restore is not compatible with my installation of Windows, and to insert a compatible recovery CD. This is the ONLY Windows CD I have (legitimate copy).
Over the course of this migration experiment I have installed and reinstalled both operating systems 7-10 times total. I'd rather not do it again. My poor laptop is probably wondering what the heck.
I can't stick with Ubuntu alone because my wireless doesn't work with it, my grad school files are not completely compatible with open source software, and I can't play the games I'd like to. So I must have the option to at least dual boot into Windows.
When selecting Windows it restarts the computer entirely to the Compaq screen, not just to the Grub menu, if that matters.
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Jul 9, 2010
Ubuntu's update manager recently updated the Grub menu.lst file. It let me decide if I wanted to keep my old menu.lst or the new one. After deciding that I was fine with the new one, I found out that I can no longer boot into Windows 7. I had previously edited menu.lst so that Windows would be at the top of the list, however, I didn't notice that this had put it into the automagic update area, and I realize now that I should have just edited what the default number was instead of moving around the entries.
Anyways, I can no longer access my Windows 7 OS via Grub, and I was wondering what sort of fix I can have for this. I've tried running update-grub, but it hasn't fixed the problem. The Windows bootloader is on the first partition of the only hard drive, as far as I can remember.
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Oct 23, 2010
With a bit of help from this forum I managed to install 10.04. The solution was to add i915.modeset=1 to the options when booting up from CD.Now I need to do the same in order to boot up from HD. I've opened /etc/default/grub and changed the relevant line to include the above option. But I need to run "update-grub" and it comes back with an error to the effect that it 'can't find a device for / (is /dev mounted?)Also, the boot menu only has ubuntu - no sign of windows in my intended dual-boot. What can I do?
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Nov 29, 2010
I am running Ubuntu 10.10. Normally when I boot, I get the choice to run Ubuntu or the Windows loader, where I choose between 7 or XP. I have just noticed that when I boot now, I do not have the choice of going into windows. This has happened on two of my PC's just in the last few days. I assume one of the updates has overwritten the grub configuration file as I still get the grub menu but not the windows option. I have tried sudo update-grub but this did not solve the problem.
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Nov 8, 2010
I had windows 7 and i installed ubuntu both on primary partitions. They were running normally and the dual boot was working well. After that I installed debian on a third different logical partition of my disk and then only debian was running and windows and ubuntu didn't. Ubuntu does not seem even when the computer starts! Then i reinstalled ubuntu over the debian so i can run only ubuntu. I cannot see windows 7 at all when grub starts
command sudo fdisk -l gives me:
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
[Code]....
Partition table entries are not in disk order
Why i have two * in boot column? I have tried some methods i found on the internet but didn't work.
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Sep 4, 2015
i have installed debian but during installation my installed windows 10 was not found by the grubloader. i have installed windows 10 on my ssd and the debian on my hdd. nevertheless i installed the grub loader on the master boot record, because it said i could still configure it so it can boot both the windows and the debian.The debian installation is running fine. But i now want to boot the windows too. The problem is i have never worked with the grub loader yet and i am little scared that i will do something wrong.How can i get grub to load my windows ?
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May 2, 2011
I've installed Debian on another partition aside with Windows XP: and when I restart the machine it only list the Debian instalation.
When I do fdisk-l, I see this
/dev/sda1 1 12749 102406311 7 HPFS/NTFS
/dev/sda2 12750 38914 210164507 f W95 Ext'd (LBA)
[code]....
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Jul 29, 2015
My computer's recent history in chronological order:
1. debian jessie is installed using netinstall iso to sda.
2. windows 8.1 is installed to sdc.
Now "lsblk" returns:
Code: Select allNAMEÂ Â Â Â Â Â Â Â Â MAJ:MIN RMÂ Â SIZE RO TYPEÂ MOUNTPOINT
sda           8:0  0 111.8G 0 diskÂ
├─sda1         8:1  0  512M 0 part /boot/efi
├─sda2         8:2  0  244M 0 part /boot
└─sda3         8:3  0 111.1G 0 partÂ
 └─sda3_crypt    254:0  0 111.1G 0 crypt
 Â
[code]....
Result: My computer boots directly to Windows 8.1. If I press F7 during first seconds of boot and choose "debian" as the boot device (via blue bios screen, not grub), debian boots.
My purpose:
1. To use debian grub screen to choose between debian and Windows. (To avoid pressing F7 during boot to use debian)
2. Set debian as default OS in grub and boot to debian unless I choose otherwise in for example 10 seconds.
I guess that I should update grub to fix this but I don't want to take risk.
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Feb 3, 2016
I've been using Debian for a few years but always on dedicated boxes and/or VMs.
Finally decided to dual boot Debian and Windows on my main Desktop PC.
Installed as I normally would using, however this time using a seperate drive (one for the existing Windows 10 install and the other for Debian), Debian install detects that windows has an EFI partition and sticks an entry in there, which is fair enough, and everything working fine. Then I spent some time configuring all my software and set it all up just the way I like it. I've rebooted Debian a few times to check it's working correctly and it is.
The issue arrives when I reboot and load into Windows 10. It boots fine.
However after a further reboot GRUB no longer loads... and the machine just boots directly into Windows 10.
After doing some further digging into my EFI partition (and reinstalling various times) it would appear that after a reboot Windows 10 deletes the entry GRUB creates in my EFI partition after EVERY reboot.
Done some googling and most people advise turning off 'fast boot' in Windows as it locks certain partitions to facilitate the machine going into hibernation, only to find that it's always been turned off on my machine (I recall due to a driver issue with my graphics card this had to be turned off when I installed Windows 10).
I've found this article on the Ubuntu forums : [URL] .... however I've tried their steps and windows is still doing a hostile takeover of my EFI partion after a reboot!
Any way to stop Windows 10 from interfering with my EFI files after a reboot? (without doing the obvious thing and kill Windows off).
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Nov 4, 2010
I'm running Debian Squeeze AMD64 with full disk encryption and LVM. After reinstalling Windows 7 I lost GRUB from the MBR. I managed to install GRUB after following this guide and using an Ubuntu 10.04 graphical installation disc, but I only get to a GRUB CLI when booting, so I can't actually choose an OS there.
I tried following this guide but I'm stuck after "# Mount the partitions to /mnt/root" and don't know what to do.
Does anyone know how I can fix GRUB so I get to choose between Debian and Windows 7 there?
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May 9, 2010
My current situation is I have two physical hard disks, one with Windows 7 (sda) and another where I recently installed Ubuntu 9.1 (sdb). At this time there were no issues.
Now after getting used to 9.1 I selected to upgrade to 10.04 from the update manager. During this install I was told I needed to upgrade GRUB which I understand is the bootloader and was told to choose where to install it.Now at this time I had no knowledge of drive naming conventions in Linux and there was no option to cancel the upgrade to look for help, so instead I followed the advice in the help box to simply select every device listed
The result was a fully working Ubuntu installation but at the cost of an unbootable Windows 7.Windows is showing on the GRUB menu but selecting it gives only a blank screen with a flashing cursor and no ability to do anything besides ctrl-alt-delete.
After a few hours of googling solutions including downgrading GRUB, there was no change and it seems that I actually have a version of GRUB on both drives. The one on the windows drive (sda) is the default loaded GRUB that shows Windows 7 but cannot boot it. The second GRUB install on the Ubuntu drive (sdb) is the one I am able to configure through Ubuntu but does not list Windows 7 on its boot list even after using "sudo update-grub"
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Apr 7, 2010
after doing an upgrade to 10.4 and updating grub I get this message. how do I address this
[Code]...
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Mar 4, 2011
I have 2 hard disks. sda,sdb
In sda, I have 4 partitions, and I have windows 7 in one of the extended partitions [not in the primary partition].
In sdb, I have 3 partitions. 2 for storage, and 1 10GB drive for Ubuntu. Again, Ubuntu is not of a primary partition.
I had ubuntu 10.04 running on that for a long time. However, I wanted to reinstall ubuntu and use 10.10.This is what I did EXACTLY:Booted from Ubuntu install CD
Chose advanced istall
Selected sdb3 for Ubuntu
I installed GRUB2 on the SAME partition as Ubuntu aka sdb3 Installed then rebooted
I can boot into Ubuntu fine, but whenever I select Windows 7 bootloader from the GRUB menu, the screen goes black, and my PC reboots.
Boot Info:
Code:
Boot Info Script 0.55 dated February 15th, 2010 [code]....
ls: reading directory sda6/: Input/output error
I have tried the testdisk/update-grub method, but it didn't work.
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Jul 14, 2011
I just started using Ubuntu 10.04 for development reasons and installed Ubuntu on a seperate harddrive with dualboot option with Windows 7.Today Win 7 got an update and I mysteriously got bumped back to the grub screen after selecting Windows boot option, but my Ubuntu was ok. After that I probably did the worst I could, and googled the problem and tried out some years-old advices which messed up my ubuntu boot as well.I am currently using my computer through Ubuntu Live Usb.
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Jan 12, 2010
I'm running a dual boot Vista/Ubuntu Jaunty. I made some changes to the grab menu so that my windows OS would appear at the top of the list .I know I could have changed the default so that Vista would have been highlighted instead of Jaunty. But the reason I moved it to the top is because when I do a kernel update, I would still want Vista to be the default booting OS. Anyways, after the update my Vista OS disappeared from grub. It didn't get deleted because the Vista partition is still accessible from Jaunty. Can anyone help me boot into Vista and preferably make it the default OS even after a Kernel update? I attached part of my menu.lst .
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Apr 15, 2010
I need to add my windows installations to the grub menu.I have windows 7 and windows xp on hd0 and windows xp on hd1.Using 'sudo update-grub' doesn't seem to help.So how do i fix this?
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Jan 25, 2010
I have a vista/ubuntu 9.10 duel boot laptop. Last week the screen was broken so it went back to the manufacture. Before that I rename the /etc/grub.d/10_linux file and ran grub-update so that Grub will only show windows boot menu (in case it confuses the repairman) now I have the laptop back and I am eating my own medicine.how to restore my ubuntu boot menus? I can now only boot into windows, although it seems like I can go to my ubuntu partition and change back my grub.cfg (which I did not backup!)but I can't remember the menuentry details.Is there any way, other than manually change my grub.cfg, so that I can boot into ubuntu again?
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Jun 20, 2010
After doing my weekly update, I discovered that I am not able to access Windows.
My windows entry still shows in my grub list on the boot menu The windows partition is still there
However, when I select windows as the os from the boot menu, i get a black screen with a white cursor in the top left corner.
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Apr 22, 2010
installed windows 7..then tried restoring grub using live cd....mounted partition somewhere else....then installed ubuntu again where it was installed previously and now grub is not detecting windows 7 but i am able use my windows files
used sudo update-grub2.
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May 24, 2010
I do not know what to do, i cannot load windows partition. it just loads grub again. this must have been something that happened when i upgraded to the 10.04 or w/e. can someoen help me out with what i can do to stop this or fix it. maybe i can reinstall but i want to know what will work first, i do not have a lot of time to fool with my computer like this again. i spent a week getting ubuntu on my computer the first time so i do not ever want to spend that much time again especially in finals week. !
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Jan 20, 2011
I have two partitions with Debian on them. One is straight Debian and I installed Grub to the MBR. Another is Linux Mint LMDE and I installed (or so I think) grub to the root partition. Mint is not listed when Debian boots up and there's no entry for it. What did I do wrong? I'm not familiar with Grub 2. Is there some 'update grub' command that I need to use? Why doesn't this get configured when the other OS is installed? Or is this just how it works? I suppose grub will work for the other OS. If I 'update' Grub with my Debian system, it will "detect" the new OS, maybe? I wanted the current Grub in my Debian install to handle everything since the Mint install isn't my main system and just experimental for me.
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Oct 7, 2010
I am actually facing a vague problem here. I was previously running Windows XP and Ubuntu . Ubuntu was installed Windows XP The problem is
1. First I tried to do some disk partitioning. That ended up with some error.
2. Ignoring that, I went to install Windows 7 over Windows XP but I was not able to proceed with Windows 7 , because the partitions were corrupted.
3. So I used Ubuntu LIVE CD (Grub was lost at this point )and used 'testdisk' and recovered the partitions.
4. Now installed the Windows 7 successfully.
5. Now again I moved to Ubuntu Live CD to write the GRUB. After which I tried restarting
6. Now Ubuntu is booting perfectly as before. But the problem is with Windows
7. The GRUB loader instead of showing Windows 7, it shows Windows XP !!! . and there is no other entry for windows. When I tried opening it, it says "error, cant read file" and further inout moves back to the grub loader list again.
"How do I change the entry to Windows 7 from Windows XP and boot Windows7 successfully " I tried it a couple of times, same thing happens . So how to change the entry?
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May 7, 2010
I had 9.10 installed and I did an upgrade to 10.04. However I cannot see anymore my Windows Vista partition with grub.. I have a Toshiba laptop Satellite p305.This is my boot script output:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
=> Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in [code].......
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Mar 5, 2011
how to be able to add windows 7 to my grub menu or to even be able to boot to windows 7. I am currently unable to do it and my system just automatically goes straight to ubuntu. I've tried holding down SHIFT during startup and all that appears in my list is ubuntu entries and a memtest entry. My windows 7 files are still intact because I can see the drive through ubuntu and see all my files. I am trying to have Windows 7 on one hard disk that is 640GB and ubuntu on a second hard disk that is 160GB
[Code]...
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Aug 5, 2011
Ive been running windows 7/Ubuntu dualboot for some years now and never had any problems.Some months ago I got a new Patriot Inferno ssd. Ofc the first thing I did was to installl windows 7, it had no problems, ran fast and smooth. Then when I reinstalled grub I started to get error when trying to start windows, the logo never apeared and all I got was the message "Windows failed to start. A recent hardware or software"Status: 0x00.00F" "Info: The boot selection failed because a required device was inaccessible.". It does not matter what order I install windows and ubuntu in, or how many times Ive tried to reinstall grub. Windows 7 will not work while I have grub/windows installed. Right now Ive got them installed on separate drives, ubuntu on the ssd and windows on a partition on a 1tb hdd. Unfortunately I need to have windows for .net programing and gaming..
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Oct 2, 2010
I have a Lenny inside a xp. I changed my installation and make a boot partition , a home directory, and a system directory. now I reinstall my xp and do this:
find /grub/stage1
root (hd0,6)
setup (hd0,6)
and grub menu found! but when I clicked on debian, can't boot and I have a message about can't boot from this vmlinuz ( or any thing similar!) , click on any key and then it come back to grub menu. my debian is on (hd0,9) and (hd0,6) is my boot partition.
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Sep 5, 2010
I have installed Windows 7 on my laptop . Now, it directly boot from Windows 7 . I think the MBR overwrote my grub . I have found two methods by google , but still does work .
1: boot from debian install CD, Alt +F2 switch to the console. "grub " "root (hd0,0)" "setup (hd0,0)".
2:boot from CD, mount /dev/scsi/host0/bus0/target0/lun0/part1 /mnt ; chroot /mnt ; grub-install /dev/sda.
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May 18, 2010
Last nigth I upgrade my system to squeeze and it whent well except for grub-pc and udev. If i try to upgrade now udev will not install do to problems with the kernel version and grub-pc can't seem to find the boot image.
[Code].....
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Jul 22, 2011
yesterday I updated my squeeze amd64 on my Phenom X4 and now it is not booting anymore. Have you experienced the same problem?
After that I noticed the shutdown was not working anymore, it just restarted instead of powering down. This morning it wouldn't boot squeeze anymore, when grub starts and prints "Welcome to grub" (or something like that) the list of operating systems is not shown.
I noticed the updated also included grub and I saw it correctly detected my operating systems.
I am planning to boot knoppix soon and try to reinstall grub from chroot, but currently I am at work.
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