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Thread: issues with dual boot after windows 8

  1. #1
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    [SOLVED] issues with dual boot after windows 8

    back story:
    -im using windows 7 right now, and wish to Dual Boot with Ubuntu
    -ive used ubuntu before through WUBI. but its off the machine as of now
    - i have a live/install cd with ubuntu on it that i just made
    -i had a dual boot of windows 8 and windows 7, windows 8 is now gone, as well as the partition for it
    -ive been on irc, they were not 100% sure how to resolve my issue

    after taking windows 8 off my machine and now ONLY running windows 7, i put the ubuntu disk in, and i get the following options "install ubuntu alongside of windows 8, replace windows 8, advanced options" we think its just a boot issue, but my question is this: if i choose "install alongside of windows 8, will i loose my current/only OS (windows 7) or is grub just calling windows 7, windows 8?

    i DO NOT want to loose my windows 7 OS and Data
    Last edited by rochford77; October 11th, 2012 at 02:33 PM.

  2. #2
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    Re: issues with dual boot after windows 8

    Ok, I'm guessing a bit, but I have seen several times where the Ubuntu side of things incorrectly identifies a windows install. On this machine, for instance, grub thinks that my Vista install is a windows recovery. I strongly suspect that what it is seeing as windows 8 is in fact your win7 installation.

    What I would do is to boot into the live environment from the CD and use the partitioning program gparted to have a good look at your drive. You could even post a screen shot here so that people can have a look at it and offer their advice.

    If you can boot into win7, and can only see one windows partition in gparted, then it is a pretty sure thing the the installer is just identifying it wrongly.

    I probably don't need to tell you that it is a good idea to back up anything really important before you do your install. That is a good idea in any case, but in your situation even more so.
    Michael

  3. #3
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    Re: issues with dual boot after windows 8

    "If you can boot into win7, and can only see one windows partition in gparted, then it is a pretty sure thing the the installer is just identifying it wrongly."

    assuming you are correct, i will be fine with the "boot alongside windows" yes?

    and im guessing "gparted" is in software center?

  4. #4
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    Re: issues with dual boot after windows 8

    Quote Originally Posted by rochford77 View Post
    "If you can boot into win7, and can only see one windows partition in gparted, then it is a pretty sure thing the the installer is just identifying it wrongly."

    assuming you are correct, i will be fine with the "boot alongside windows" yes?
    NO -- not if you (1) do not have some unallocated space on the drive in which to create partitions for Ubuntu or (2) use the Ubuntu installer to shrink the Win7 OS partition to make room.

    Shrinking using the installer can result in filesystem corruption in Win7, which can then render Win7 unbootable.

    So, BEFORE you attempt that, if you don't have some unallocated space, shrink the Win7 OS only using the Win7 Disk Management utility.

    Then, use the Win7 Backup feature to create and burn a Win7 Repair CD (if you don't already have one). This will provide you the tool needed to repair/restore the Win7 boot loader, should it become corrupted later due to your Ubuntu install.

    and im guessing "gparted" is in software center?
    Yes ... but ... you can't use GParted on a partition that is currently being used -- which is the case when you're running Ubuntu off your hard disk. IF you want to make changes to partitions that Ubuntu uses, you need to boot from a LiveCD or LiveUSB and run Gparted from there.
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  5. #5
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    Re: issues with dual boot after windows 8

    Quote Originally Posted by rochford77 View Post
    assuming you are correct, i will be fine with the "boot alongside windows" yes?
    Yes, if I am right, you can safely "install alongside", but do have a look for yourself

    and im guessing "gparted" is in software center?
    gparted is in the software center, and you can install it once you have Ubuntu installed.

    In the Live environment, i.e. when you boot from the CD into the "try without installing" option, it is already installed by default.
    Michael

  6. #6
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    Re: issues with dual boot after windows 8

    When you dual boot Windows the second install overwrites the boot files of the first. Only the partition with the boot flag has the Windows boot files & BCD.
    So it probably is correctly identified, its just the Windows 8 boot files are still in your Windows 7.

    Vista & XP but still the same:
    Multibooters, Pictures here worth 1000+ words
    http://www.multibooters.co.uk/multiboot.html
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  7. #7
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    Re: issues with dual boot after windows 8

    Quote Originally Posted by oldfred View Post

    Vista & XP but still the same:
    Multibooters, Pictures here worth 1000+ words
    http://www.multibooters.co.uk/multiboot.html
    This definitely needs to be read.

    Thanks oldfred
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  8. #8
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    Re: issues with dual boot after windows 8

    I have yet to see a post from oldfred that is not worth taking note of.

    Too late at night now, but I will look at it tomorrow. Thanks for that. I have been wondering why it turns up strange in the grub menu. The one on my netbook is wrong too.
    Michael

  9. #9
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    Re: issues with dual boot after windows 8

    Quote Originally Posted by Mark Phelps View Post
    NO -- not if you
    I've been away for a bit, so I didn't notice that Mark had posted at the same time I was posting. What he says is true. Use the Windows tool to shrink your windows partition.
    Michael

  10. #10
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    Re: issues with dual boot after windows 8

    Quote Originally Posted by Mark Phelps View Post
    NO -- not if you (1) do not have some unallocated space on the drive in which to create partitions for Ubuntu or (2) use the Ubuntu installer to shrink the Win7 OS partition to make room.

    Shrinking using the installer can result in filesystem corruption in Win7, which can then render Win7 unbootable.

    So, BEFORE you attempt that, if you don't have some unallocated space, shrink the Win7 OS only using the Win7 Disk Management utility.

    Then, use the Win7 Backup feature to create and burn a Win7 Repair CD (if you don't already have one). This will provide you the tool needed to repair/restore the Win7 boot loader, should it become corrupted later due to your Ubuntu install.

    Yes ... but ... you can't use GParted on a partition that is currently being used -- which is the case when you're running Ubuntu off your hard disk. IF you want to make changes to partitions that Ubuntu uses, you need to boot from a LiveCD or LiveUSB and run Gparted from there.
    so what your saying is yes, but not without risk.

    my original intent was to create a new partition using windows disk utility. i put in my ubuntu install disk and chose "advanced/other options" then i saw the 70Gb partition i made for ubuntu, selected it, hit "install now" and it gave me a (and im going off memory here) "no root system dected" or something along those lines. after looking further into it, it looked like i had to set up 3 or more disk partitions all formatted difffrently to install ubuntu. so i gave up and expanded driveC (windows 7) to swallow the partition i made for ununtu and then the OP issue began.

    i would not mind setting this all up manually using windows disk utility, but how many partitons do i need and about what size. i plan to use about 80GB total for ubuntu.

    so how many new partitions do i need to make using windows disk managment, how big should i make each one, (out of my 80GB im allocating for ubuntu).

    once i have the partitions made should i format them at all in windows disk managment or do that in the ubuntu installer? and how do i format them?

    if someone could walk me through manually setting this up id rather just do that

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