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Thread: dual boot to single boot, removing windows

  1. #1
    Join Date
    Mar 2006
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    38
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    Ubuntu 10.10 Maverick Meerkat

    dual boot to single boot, removing windows

    Hi all

    I've got a win7/ubuntu 10.04 dual boot running on my system. I did the usual of installing 7 first, then ubuntu and using it as the default boot option.

    I now want to get rid of win 7 and expand the ubuntu installation into the free space. My current hdd structure is in the attachment. If I just boot a live cd and gparted to remove the win 7 partitions and expand the ubuntu installation into the free space, will that work or will it have a massive panic?

    Also, how to I get grub to silently boot after without offering me any boot options?
    Attached Images Attached Images

  2. #2
    Join Date
    Oct 2007
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    Australia
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    Re: dual boot to single boot, removing windows

    Quote Originally Posted by jiggling_john View Post
    If I just boot a live cd and gparted to remove the win 7 partitions and expand the ubuntu installation into the free space, will that work or will it have a massive panic?
    I would imagine it should work fine. You may need to do a 2 step process to extend your Ubuntu partition, first move the start of the extended partition (after deleting sda1&2) then grow the size of your ext4 partition.

    To be on the safe side always backup data you want to keep prior to any disk intensive stuff like that! (Just in case something goes wrong).

    Quote Originally Posted by jiggling_john View Post
    Also, how to I get grub to silently boot after without offering me any boot options?
    Once you reboot, updating GRUB should fix that - assuming its GRUB2 (not sure about GRUB legacy - you may need to manually edit the config file).

  3. #3
    Join Date
    Mar 2006
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    38
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: dual boot to single boot, removing windows

    right o, i'll give that a bash now then. How do I update grub? *stupid question mode* :-p

  4. #4
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    Jawja
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    Ubuntu 13.04 Raring Ringtail

    Re: dual boot to single boot, removing windows


  5. #5
    Join Date
    Mar 2006
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    38
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: dual boot to single boot, removing windows

    ok so i totally broke it...

    I rebooted, did a gparted, deleted win partition, moved everything across and resized.

    All seemed well

    i had

    sda3
    -sda5 system
    -swap


    After that it wouldn't boot, just a flashing cursor so I rebooted into live usb and tried to reinstall grub.

    I mounted /dev/sda5 and installed grub to there.

    oh dear... this now seems to have killed my partition table? If i go into gparted now it says "invalid partition table on dev/sda - wrong signature 820"

    any ideas how to rescue me?

  6. #6
    Join Date
    Mar 2006
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    38
    Distro
    Ubuntu 10.10 Maverick Meerkat

    Re: dual boot to single boot, removing windows

    did it!

    right, i dunno what i did wrong! I think when I resized the partitions there was no longer an active/boot partition. I ended up doing the following...

    read this
    https://help.ubuntu.com/community/DataRecovery

    then i downloaded and ran TestDisk

    This is a bit of genius, it recovered my partition and re-wrote the partition table. I selected at this point to turn it into a boot partition.

    The swap space disappeared somewhere...

    I then followed instructions to reinstall grub

    This worked!

    After booting into my rescued installation, i used gparted to create a swap space where it used to be, used mkswap to set it and then edited my fstab to replicate the changes.

    bit of a bugger all that but im back now and going to buy a back up hdd!

  7. #7
    Join Date
    Jun 2009
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    SW Forida
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    Hidden!
    Distro
    Ubuntu

    Re: dual boot to single boot, removing windows

    You are too quick. But I am glad you got it worked out.

    I generally recommend that you do not move partitions left as that has slightly more risk as you are copying/moving all the data. I prefer that you use the space for /home or for a /data partition and leave / (root) where it is.

    Just for future info:

    To move /home uses rsync
    https://help.ubuntu.com/community/Pa...ng/Home/Moving
    Uses cp -ax
    http://www.ivankuznetsov.com/2008/04...partition.html
    http://ubuntuforums.org/showthread.php?t=46866

    Partitioning basics with some info on /data older but still relevant
    http://ubuntuforums.org/showthread.p...data+partition

    I like to keep a small system partition(s) and have data on separate partitions. Then it is easily to do full new installs to another system partition (keeping old for a while). I have several 20-25GB system partitons for new versions or testing.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  8. #8
    Join Date
    Oct 2007
    Location
    Australia
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    136

    Re: dual boot to single boot, removing windows

    Glad you got it all sorted in the end. And sorry if my "no worries" attitude lead you astray. Ah yes boot partition. I overlooked that. I would imagine that GParted should have been able to sort all that and while booted from a live CD/USB you should've been able to fix GRUB at the same time. GRUB should've warned about that at the time. Anyway, alls well that ends well I guess.

    PS I've would've got the backup drive first! Better late than never though!

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