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Thread: Upgrade Ubuntu on an already Partioned Drive

  1. #11
    Join Date
    Mar 2010
    Ubuntu Mate 16.04 Xenial Xerus

    Re: Upgrade Ubuntu on an already Partioned Drive

    Looks like 6 partitions to me. Incorrect information is a good way to end up with a destroyed system.

    fdisk -l (filtered): ___________________________________________________________
    Disk sda: 465.8 GiB, 500107862016 bytes, 976773168 sectors
    Disk identifier: 0xcbba9623
          Boot     Start       End   Sectors   Size Id Type
    sda1  *         2048   1026047   1024000   500M  7 HPFS/NTFS/exFAT
    sda2         1026048 169371647 168345600  80.3G  7 HPFS/NTFS/exFAT
    sda3       169371648 358197247 188825600    90G 83 Linux
    sda4       358199294 976771071 618571778   295G  5 Extended
    sda5       358199296 381634559  23435264  11.2G 82 Linux swap / Solaris
    sda6       381636608 976771071 595134464 283.8G  7 HPFS/NTFS/exFAT
    The disk is MBR, not GPT, so that means Windows is installed in legacy mode. The flash drive you booted to run boot-info booted in UEFI mode, so your hardware is capable, but since everything is legacy BIOS mode, I'd keep it that way. You'll miss out on some good stuff that EFI provides, but it isn't worth the hassle for most people to reinstall Windows.

    At the very bottom of the output in the URL, it says that. Boot-repair is pretty good at handling non-UEFI, legacy boot on MBR partition tables. It says:
    Suggested repair: ______________________________________________________________
    The default repair of the Boot-Repair utility would reinstall the grub2 of
    sda3 into the MBR of sda.
    Additional repair would be performed: unhide-bootmenu-10s win-legacy-basic-fix     
    Confirmation request before suggested repair: __________________________________
    LegacyWindows detected. The boot of your PC is in EFI mode. You may want to retry after changing it to BIOS-compatibility/CSM/Legacy mode.
    Are you sure you want to continue anyway?
    Final advice in case of suggested repair: ______________________________________
    Please set your BIOS in Legacy mode in order to start your Ubuntu 18.04.4 LTS, then type command [sudo update-grub] in order to add the Windows entry to your GRUB menu.
    That's what I would suggest too, but oldfred is really the expert here. Wait for his response, if you can. I haven't dual booted in about 15 yrs. Got tired of MSFT trashing my Linux boot.

  2. #12
    Join Date
    Jun 2009
    SW Forida

    Re: Upgrade Ubuntu on an already Partioned Drive

    You show BIOS/MBR, but have UEFI hardware.
    So you have to be careful to select BIOS boot on installer or it may try to install in UEFI boot mode.

    Besides good backups, make sure you have a Windows repair/recovery disk or the installer with repair console.
    Windows 10 is not as easy to dual boot in BIOS mode.
    Grub only boots working Windows, so when it updates & turns on fast start up or needs chkdsk grub will not boot it. You then have to temporarily install a Windows boot loader, fix Windows, and then reinstall grub. Or use Windows flash drive & Ubuntu live installer to restore MBR's.

    With UEFI, it is like having two MBR as each boot loader is in separate folders & UEFI will offer to boot any install. So when grub does not boot Windows, you can directly boot from UEFI menu and often then just turn off fast start up or f8 into repair console and fix Windows. Or UEFI has a lot less hassle dual booting with Windows 10.
    For more info on UEFI boot install & repair - Regularly Updated :
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #13
    Join Date
    Apr 2019

    Re: Upgrade Ubuntu on an already Partioned Drive

    So what would you suggest the best option is ?

    Backup all my files and do a fresh install of Ubuntu and Windows on UEFI mode ?

    The reason i have installed BIOS/MBR versions is that when I installed UEFI version of windows and then tried to partition the drive so that I could install Ubuntu , after the installation of Ubuntu the system kept crashing the whole time. Giving me blue screens etc.

    I tried all the walkthrough solutions i could find on the internet but none of them helped me solve the problem.

    Guys once again thank you very much for taking the time and answering my questions , you are all very helpfull !!
    Last edited by sabbarth; 2 Weeks Ago at 08:35 PM.

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