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Thread: dual boot 2 versions of opensuse

  1. #1
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    Default dual boot 2 versions of opensuse

    since im not 100% sure of the boot sequence and files.. is it possible to have 2 versions of opensuse e.g. TW and 15 or even 2*TW?
    i ask this since if i look in /boot/efi/EFI/ i see TW registerd as opensuse which suggests non uniqueness?
    if anyone could clarify the relation between /boot/efi and the efi partition that would be appreciated.

  2. #2
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    Default Re: dual boot 2 versions of opensuse

    The EFI partition is used by the system "firmware" during boot.

    The partition is mounted on /boot/efi on your running openSUSE to have it available for consulting it's contents, changing it's contents, etc.
    Henk van Velden

  3. #3
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    Default Re: dual boot 2 versions of opensuse

    so the efi partition is mounted on /boot/efi.
    so if TW is designated simply as 'opensuse' (and assuming the same for leap) then how can 2 different version of opensuse be installed on the same machine without overwriting each other?

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    Default Re: dual boot 2 versions of opensuse

    Quote Originally Posted by ndc33 View Post
    since im not 100% sure of the boot sequence and files.. is it possible to have 2 versions of opensuse e.g. TW and 15 or even 2*TW?
    Yes, it is possible.

    I currently have:
    • openSUSE Leap 42.3]
    • openSUSE Tumbleweed
    • openSUSE Leap 15.0 Beta

    on three different computers. And one of those also has a second install of Tumbleweed.

    One of those computers is for legacy booting. The others use UEFI booting.

    I recently (December) blogged about how I am handling that with UEFI:
    Handling multiple openSUSE version with UEFI
    Perhaps you might find that useful.
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

  5. #5
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    Default Re: dual boot 2 versions of opensuse

    > nrickert
    thanks! but after reading, changing GRUB_DISTRIBUTOR actually sounds much easier? and since i could then set grub to boot disto by name rather than the first in the list, the default would not change after an update. what is the downside of this method?

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    Default Re: dual boot 2 versions of opensuse

    Quote Originally Posted by ndc33 View Post
    what is the downside of this method?
    It depends on your UEFI firmware (otherwise known as BIOS).

    On one of my UEFI boxes, that works well. On the other, the BIOS thinks that I have too many UEFI system names, and deletes one of them.
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

  7. #7
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    Default Re: dual boot 2 versions of opensuse

    Quote Originally Posted by nrickert View Post
    Yes, it is possible.

    I currently have:
    • openSUSE Leap 42.3]
    • openSUSE Tumbleweed
    • openSUSE Leap 15.0 Beta

    on three different computers. And one of those also has a second install of Tumbleweed.

    One of those computers is for legacy booting. The others use UEFI booting.

    I recently (December) blogged about how I am handling that with UEFI:
    Handling multiple openSUSE version with UEFI
    Perhaps you might find that useful.
    Why use UEFI booting? My disks are:

    Code:
    erlangen:~ # parted -l
    Model: ATA WDC WD40EZRX-22S (scsi)
    Disk /dev/sda: 4001GB
    Sector size (logical/physical): 512B/4096B
    Partition Table: gpt
    Disk Flags: pmbr_boot
    
    Number  Start   End     Size    File system     Name     Flags
     1      1049kB  8389kB  7340kB                  primary  bios_grub
     2      8389kB  34.4GB  34.4GB  linux-swap(v1)  primary  msftdata
     3      34.4GB  68.7GB  34.4GB  ext4            primary  legacy_boot, msftdata
     4      68.7GB  4001GB  3932GB  ext4            primary  msftdata
    
    
    Model: ATA KINGSTON SV300S3 (scsi)
    Disk /dev/sdb: 60.0GB
    Sector size (logical/physical): 512B/512B
    Partition Table: msdos
    Disk Flags: 
    
    Number  Start   End     Size    Type     File system  Flags
     1      1049kB  30.1GB  30.1GB  primary  ext4         boot, type=83
     2      30.1GB  60.0GB  30.0GB  primary               type=83
    
    
    Model: NVMe Device (nvme)
    Disk /dev/nvme0n1: 512GB
    Sector size (logical/physical): 512B/512B
    Partition Table: msdos
    Disk Flags: 
    
    Number  Start   End     Size    Type     File system     Flags
     1      1049kB  34.4GB  34.4GB  primary  linux-swap(v1)  type=82
     2      34.4GB  68.7GB  34.4GB  primary  ext4            boot, type=83
     3      68.7GB  512GB   443GB   primary  ext4            type=83
    
    
    erlangen:~ #
    Grub creates a nice boot menu with the following entries:
    Code:
    erlangen:~ # grep menuentry /boot/grub2/grub.cfg | cut -f 2 -d \'
    ...
    
     openSUSE Tumbleweed
    Erweiterte Optionen für openSUSE Tumbleweed
    openSUSE Tumbleweed, mit Linux 4.15.4-1-default
    openSUSE Tumbleweed, mit Linux 4.15.4-1-default (Wiederherstellungsmodus)
    openSUSE Tumbleweed, mit Linux 4.15.3-1-default
    openSUSE Tumbleweed, mit Linux 4.15.3-1-default (Wiederherstellungsmodus)
    
     openSUSE Tumbleweed (auf /dev/sda3)
    Erweiterte Optionen für openSUSE Tumbleweed (auf /dev/sda3)
    openSUSE Tumbleweed (auf /dev/sda3)
    openSUSE Tumbleweed, mit Linux 4.14.5-1-default (auf /dev/sda3)
    openSUSE Tumbleweed, mit Linux 4.4.79-19-default (auf /dev/sda3)
    
     openSUSE Tumbleweed (auf /dev/sdb1)
    Erweiterte Optionen für openSUSE Tumbleweed (auf /dev/sdb1)
    openSUSE Tumbleweed (auf /dev/sdb1)
    openSUSE Tumbleweed, mit Linux 4.15.3-1-default (auf /dev/sdb1)
    openSUSE Tumbleweed, mit Linux 4.14.12-1-default (auf /dev/sdb1)
    erlangen:~ #
    AMD Athlon 4850e (2009), openSUSE 13.1, KDE 4, Intel i3-4130 (2014), i7-6700K (2016), i5-8250U (2018), AMD Ryzen 5 3400G (2020), openSUSE Tumbleweed, KDE Plasma 5

  8. #8
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    Default Re: dual boot 2 versions of opensuse

    Quote Originally Posted by karlmistelberger View Post
    Why use UEFI booting?
    Why not?

    Yes, I agree that grub2 does a pretty good job of creating a boot menu. And GPT partitioning seems to work well, even on machines with a legacy BIOS. But UEFI is the future.
    openSUSE Leap 15.3; KDE Plasma 5.18.6;

  9. #9
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    Default Re: dual boot 2 versions of opensuse

    Quote Originally Posted by ndc33 View Post
    since im not 100% sure of the boot sequence and files.. is it possible to have 2 versions of opensuse e.g. TW and 15 or even 2*TW?
    i ask this since if i look in /boot/efi/EFI/ i see TW registerd as opensuse which suggests non uniqueness?
    if anyone could clarify the relation between /boot/efi and the efi partition that would be appreciated.
    As you probably have heard by now: Yes, of course you can dual boot two versions of openSUSE.

    I currently have on laptop that is Quadra-Booting openSUSE 13.2, openSUSE 42.2, openSUSE 42.3, and AV Linux (a Debian-GNU-based Music/Media Production specialty distro with a Zero Latency kernel).

    Other machines are various combinations, and the one I am typing this message on is going to be Quadra-Booting with test installs of Tumbleweed and the testing phases of Leap 15 starting within the next day or two, along with the already-installed and running 42.3 and AV Linux.

    ... so, I think it is possible.
    "Take a Walk on a Sunny Day, Greet everyone along the way, and Make Somebody Smile, Today"
    Gerry Jack Macks"Walk On A Sunny Day" GerryJackMacks.net

  10. #10
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    Default Re: dual boot 2 versions of opensuse

    Quote Originally Posted by nrickert View Post
    Why not?

    Yes, I agree that grub2 does a pretty good job of creating a boot menu. And GPT partitioning seems to work well, even on machines with a legacy BIOS. But UEFI is the future.
    Ooooh! Scary!!!

    ... unless, of course, the hardware manufacturers can get their act together and co-operate to follow a good, solid standard.

    Something they have not been able to do in more than 50 years, BTW.
    "Take a Walk on a Sunny Day, Greet everyone along the way, and Make Somebody Smile, Today"
    Gerry Jack Macks"Walk On A Sunny Day" GerryJackMacks.net

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