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Thread: GRUB Ubuntu, ParrotOS and Windows

  1. #1
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    Nov 2016
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    GRUB Ubuntu, ParrotOS and Windows

    Hello,
    i have an encrypted lvm of ubuntu and one of parrot os. I just installed Parrot OS and i chose my Ubuntu boot partition for Parrot too. Now my grub is overwritten and i dont know how to boot into Ubuntu.

    Any help is appreciated.

  2. #2
    Join Date
    Jun 2014
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    5,470

    Re: GRUB Ubuntu, ParrotOS and Windows

    I just installed Parrot OS and i chose my Ubuntu boot partition for Parrot too. Now my grub is overwritten and i dont know how to boot into Ubuntu.
    Any help is appreciated.
    You will need to clarify the above comment because as stated, if you chose to install Parrot OS to the same partition on which you had Ubuntu, you will have overwritten the Ubuntu install and it is not there to boot. Can you boot Parrot? If so, open a terminal and run this command and post the output here:

    Code:
    sudo parted -l

  3. #3
    Join Date
    Jul 2005
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    I think I'm here! Maybe?
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    Re: GRUB Ubuntu, ParrotOS and Windows

    With an lvm installation of Ubuntu you will have had, as you implied, a separate /boot partition so you may not have overwritten your Ubuntu root partition as feared by yancek.

    However, let's see exactly where you've got to at the moment.

    See Boot-Repair in my signature below and follow the instructions there just to run the Boot-Info-Script.
    Do not run the default repair just yet but simply copy back here the pastebin link you get which will show us a lot more about your system and its current setup.
    DISTRO: Xubuntu 18.04-64bit --- Code-tags --- Boot-Repair --- Grub2 wiki & Grub2 Basics --- RootSudo --- Wireless-Info --- SolvedThreads

  4. #4
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    Jun 2014
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    Re: GRUB Ubuntu, ParrotOS and Windows

    I think I misread the original post. Question is, now that you have installed Parrot, can you boot it? If so, you should be able to run grub-mkconfig to update grub to include Ubuntu. Best to post the boot repair output if you have not resolved this issue.

  5. #5
    Join Date
    Apr 2008
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    Ubuntu Mate

    Re: GRUB Ubuntu, ParrotOS and Windows

    I make two / partitions, and install each OS on one of them. Set it to boot from the first partition, and you'll get a menu on boot, from which you can select one or the other. That's how I dual-boot Manjaro and Ubuntu; each has some features the other doesn't.

    It's pretty easy to do.

    There are 2 kinds of people: Three Stooges fans, and women.
    There are 10 kinds of people: Those who understand binary, and those who don't.

    I drink my Ubuntu black, no sugar.
    Ubuntu user 28819

  6. #6
    Join Date
    Nov 2016
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    5

    Re: GRUB Ubuntu, ParrotOS and Windows

    Hello, i already used Boot Repair, but here's my Boot Info Summary: https://paste.ubuntu.com/p/SCxbpFVmDS/

    Thanks for the replies

  7. #7
    Join Date
    Jun 2014
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    Re: GRUB Ubuntu, ParrotOS and Windows

    Look at lines 559-561 in boot repair shown below, specifically the line beginning with search which shows the UUID for the Ubuntu partition, beginning with e355...:

    menuentry "Ubuntu du Fotze" {
    search --fs-uuid --no-floppy --set=root e3554851-1997-4e4b-8388-343ab08dce99
    chainloader (${root})/efi/EFI/ubuntu/grubx64.efi
    Then look at any of the grub.cfg menuentry lines for Parrot OS, beginning with line 325. On lines 333 and 335, you see the UUID above which was the Ubuntu partition as the UUID for the install of Parrot. That is /dev/sdc2 on the 238GB drive and you have installed Parrot over the previous Ubuntu install. The only sign of Ubuntu in the boot repair output is lines 543-549, the EFI entry info which is on the EFI partition and will remain there but can't be used as Ubuntu no longer exists.

  8. #8
    Join Date
    Nov 2016
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    5

    Re: GRUB Ubuntu, ParrotOS and Windows

    So what can i do now?

  9. #9
    Join Date
    Jun 2014
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    5,470

    Re: GRUB Ubuntu, ParrotOS and Windows

    So what can i do now?
    You need to reinstall Ubuntu completely as it is gone, overwritten by your Parrot install which is using the entire drive. You need to resize/shrink one of the partitions to create space on which to install Ubuntu if you want to use the same drive. You are using encryption, LVM and RAID, none of which I am familiar with so wait for someone else to post or start a new thread on installing Ubuntu on the same drive with another Linux OS and LVM, or keep searching online.

  10. #10
    Join Date
    Nov 2016
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    5

    Re: GRUB Ubuntu, ParrotOS and Windows

    It is not the same drive, I think you misunderstood

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