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I had to install windows for my sister, and I had a 20gb partition there for backup ( /data/ ), and well, that's where I was going for. After reformatting ...
  1. #1
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    Question Restoring grub after installing windows

    I had to install windows for my sister, and I had a 20gb partition there for backup ( /data/ ), and well, that's where I was going for. After reformatting and installing Windows, I try restoring grub and this is what I get:

    Code:
    grub> root (hd0,5)
    grub> setup (hd0)
    Checking if "/boot/grub/stage1" exists... yes
    Checking if "/boot/grub/stage2" exists... yes
    Checking if "/boot/grub/reiserfs_stage1_5" exists... yes
    Running "embed /boot/grub/reiserfs_stage1_5 (hd0)"... 20 sectors are embedded
    .
    succeeded
    Running "install /boot/grub/stage1 (hd0) (hd0)1+20 p (hd0,5)/boot/grub/stage2
    /boot/grub/menu.lst"... failed
    Error 12: Invalid device requested
    Well, afterward I tried using grub-install:

    Code:
    sudo grub-install --recheck /dev/hda
    Probing devices to guess BIOS drives. This may take a long time.
    /dev/hda: Not found or not a block device.
    Searching for an alternative way to install it, I found that if I 'installed' Ubuntu over my Ubuntu partition, it would automatically restore grub. But when I get to the partition tables, I get a message saying that "The computer has no operating systems on it" and it considers my hard drive as empty. (as you can see on the attachments)

    Uhm, help?
    Attached Images Attached Images

  2. #2
    Linux Enthusiast L4Linux's Avatar
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    Try with Super Grub Disk.

  3. #3
    Super Moderator devils casper's Avatar
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    In case SuperGRUB disk doesn't work, boot up from LiveCD and post the contents of /boot/grub/menu.lst file here. Post the output of fdisk -l command too.

    Code:
    sudo fdisk -l
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

  4. #4
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    Indeed it did not work.

    /boot/grub/menu.lst
    Code:
    # menu.lst - See: grub(8), info grub, update-grub(8)
    #            grub-install(8), grub-floppy(8),
    #            grub-md5-crypt, /usr/share/doc/grub
    #            and /usr/share/doc/grub-doc/.
    
    ## default num
    # Set the default entry to the entry number NUM. Numbering starts from 0, and
    # the entry number 0 is the default if the command is not used.
    #
    # You can specify 'saved' instead of a number. In this case, the default entry
    # is the entry saved with the command 'savedefault'.
    # WARNING: If you are using dmraid do not use 'savedefault' or your
    # array will desync and will not let you boot your system.
    default		0
    
    ## timeout sec
    # Set a timeout, in SEC seconds, before automatically booting the default entry
    # (normally the first entry defined).
    timeout		10
    
    ## hiddenmenu
    # Hides the menu by default (press ESC to see the menu)
    #hiddenmenu
    
    # Pretty colours
    #color cyan/blue white/blue
    
    ## password ['--md5'] passwd
    # If used in the first section of a menu file, disable all interactive editing
    # control (menu entry editor and command-line)  and entries protected by the
    # command 'lock'
    # e.g. password topsecret
    ## password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
    # password topsecret
    
    #
    # examples
    #
    # title		Windows 95/98/NT/2000
    # root		(hd0,0)
    # makeactive
    # chainloader	+1
    #
    # title		Linux
    # root		(hd0,1)
    # kernel	/vmlinuz root=/dev/hda2 ro
    #
    
    #
    # Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
    
    ### BEGIN AUTOMAGIC KERNELS LIST
    ## lines between the AUTOMAGIC KERNELS LIST markers will be modified
    ## by the debian update-grub script except for the default options below
    
    ## DO NOT UNCOMMENT THEM, Just edit them to your needs
    
    ## ## Start Default Options ##
    ## default kernel options
    ## default kernel options for automagic boot options
    ## If you want special options for specific kernels use kopt_x_y_z
    ## where x.y.z is kernel version. Minor versions can be omitted.
    ## e.g. kopt=root=/dev/hda1 ro
    ##      kopt_2_6_8=root=/dev/hdc1 ro
    ##      kopt_2_6_8_2_686=root=/dev/hdc2 ro
    # kopt=root=UUID=a99bdf92-a210-4ce6-a586-919d3a21a2ac ro
    
    ## default grub root device
    ## e.g. groot=(hd0,0)
    # groot=a99bdf92-a210-4ce6-a586-919d3a21a2ac
    
    ## should update-grub create alternative automagic boot options
    ## e.g. alternative=true
    ##      alternative=false
    # alternative=true
    
    ## should update-grub lock alternative automagic boot options
    ## e.g. lockalternative=true
    ##      lockalternative=false
    # lockalternative=false
    
    ## additional options to use with the default boot option, but not with the
    ## alternatives
    ## e.g. defoptions=vga=791 resume=/dev/hda5
    # defoptions=quiet splash vga=792
    
    ## should update-grub lock old automagic boot options
    ## e.g. lockold=false
    ##      lockold=true
    # lockold=false
    
    ## Xen hypervisor options to use with the default Xen boot option
    # xenhopt=
    
    ## Xen Linux kernel options to use with the default Xen boot option
    # xenkopt=console=tty0
    
    ## altoption boot targets option
    ## multiple altoptions lines are allowed
    ## e.g. altoptions=(extra menu suffix) extra boot options
    ##      altoptions=(recovery) single
    # altoptions=(recovery mode) single
    
    ## controls how many kernels should be put into the menu.lst
    ## only counts the first occurence of a kernel, not the
    ## alternative kernel options
    ## e.g. howmany=all
    ##      howmany=7
    # howmany=1
    
    ## specify if running in Xen domU or have grub detect automatically
    ## update-grub will ignore non-xen kernels when running in domU and vice versa
    ## e.g. indomU=detect
    ##      indomU=true
    ##      indomU=false
    # indomU=detect
    
    ## should update-grub create memtest86 boot option
    ## e.g. memtest86=true
    ##      memtest86=false
    # memtest86=true
    
    ## should update-grub adjust the value of the default booted system
    ## can be true or false
    # updatedefaultentry=false
    
    ## should update-grub add savedefault to the default options
    ## can be true or false
    # savedefault=false
    
    ## ## End Default Options ##
    
    title		Ubuntu 9.04, kernel 2.6.28-13-generic
    uuid		a99bdf92-a210-4ce6-a586-919d3a21a2ac
    kernel		/boot/vmlinuz-2.6.28-13-generic root=UUID=a99bdf92-a210-4ce6-a586-919d3a21a2ac ro quiet splash vga=792 
    initrd		/boot/initrd.img-2.6.28-13-generic
    quiet
    
    title		Ubuntu 9.04, kernel 2.6.28-13-generic (recovery mode)
    uuid		a99bdf92-a210-4ce6-a586-919d3a21a2ac
    kernel		/boot/vmlinuz-2.6.28-13-generic root=UUID=a99bdf92-a210-4ce6-a586-919d3a21a2ac ro  single
    initrd		/boot/initrd.img-2.6.28-13-generic
    
    title		Ubuntu 9.04, memtest86+
    uuid		a99bdf92-a210-4ce6-a586-919d3a21a2ac
    kernel		/boot/memtest86+.bin
    quiet
    
    ### END DEBIAN AUTOMAGIC KERNELS LIST
    
    # This is a divider, added to separate the menu items below from the Debian
    # ones.
    title		Other operating systems:
    root
    
    
    # This entry automatically added by the Debian installer for a non-linux OS
    # on /dev/sda1
    title		Windows Vista (loader)
    rootnoverify	(hd0,0)
    savedefault
    makeactive
    chainloader	+1
    fdisk -l output:
    Code:
    ubuntu@ubuntu:~$ sudo fdisk -l
    omitting empty partition (5)
    
    Disk /dev/sda: 250.0 GB, 250059350016 bytes
    255 heads, 63 sectors/track, 30401 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0xee23ee23
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1         653     5245191    7  HPFS/NTFS
    /dev/sda2             654       30400   238942777+   f  W95 Ext'd (LBA)
    /dev/sda3           11095       18924    62894443+   7  HPFS/NTFS
    /dev/sda5             654        8355    61866252   83  Linux
    /dev/sda6            8356       11094    22000986    7  HPFS/NTFS
    /dev/sda7           18925       21535    20972826    7  HPFS/NTFS
    /dev/sda8           21536       25451    31455238+   7  HPFS/NTFS
    /dev/sda9           25452       30142    37680426    7  HPFS/NTFS
    /dev/sda10          30143       30400     2072353+  82  Linux swap / Solaris

  5. #5
    Super Moderator devils casper's Avatar
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    sudo grub-install --recheck /dev/hda
    Probing devices to guess BIOS drives. This may take a long time.
    /dev/hda: Not found or not a block device.
    Its /dev/sda instead of /dev/hda.

    Try this :

    Boot up from Ubuntu LiveCD, open Terminal and execute this
    Code:
    sudo grub
    You will get a grub prompt, grub>
    Execute this:
    Code:
    root (hd0,4)
    setup (hd0)
    quit
    Reboot machine.

    In case it doesn't work, post the contents of /etc/fstab file here.
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

  6. #6
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    Code:
    grub> root (hd0,4)
    
    grub> setup (hd0)
    
    Error 17: Cannot mount selected partition
    /etc/fstab:
    Code:
    # /etc/fstab: static file system information.
    #
    # Use 'vol_id --uuid' to print the universally unique identifier for a
    # device; this may be used with UUID= as a more robust way to name devices
    # that works even if disks are added and removed. See fstab(5).
    #
    # <file system> <mount point>   <type>  <options>       <dump>  <pass>
    proc            /proc           proc    defaults        0       0
    # / was on /dev/sda10 during installation
    UUID=a99bdf92-a210-4ce6-a586-919d3a21a2ac /               reiserfs notail,relatime 0       1
    # /data was on /dev/sda11 during installation
    UUID=44f8ba27-0f00-4c05-a4f0-99abe27faa90 /data           reiserfs relatime        0       2
    # swap was on /dev/sda9 during installation
    UUID=8dfab8dc-eaea-4821-a562-c0e887767402 none            swap    sw              0       0
    /dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
    /dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0       0
    edit - A second try with Super Grub, I got it to load but it crashed on start:
    Code:
    *Checking file systems
    139
    fsck 1.41.4(27-jan-2009)
    failed to open device 'UUID=44f8ba27-0f00-4c05-a4f0-99abe27faa90'. No such file or directory.
    fsck died with exit status 8
    *File system check fails.
    Please repair the file system manually
    Then I opened fstab commented all that referred to that /data (uuid itself and the line below it)
    ctrl+alt+del loaded Gnome. I ran StartUp-Manager -> Advanced -> Restore original settings... and.. problem solved.

    Thanks both of you (L4Linux and Devils Casper) for your time and help. =]

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