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Thread: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

  1. #1
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    Default Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    I installed Windows 7 on one SSD and once that was working, I connected the second SSD and installed OpenSUSE 13.1 to that SSD. Both OSes are working fine, but the only way I can boot into one OS or the other is to change settings in BIOS. Can someone walk me through the process of getting a grub menu or something when I turn on the machine? I am absolutely new to OpenSUSE, so I need step-by-step instructions, and I certainly do not want to clobber my Win7 install, since it is now fairly well customized.
    I did not see any prompt during the setup of OpenSUSE to "install alongside Windows" or anything, so I'm hoping there is some way I can get a bootloader option to boot to one drive and one OS or the other.

  2. #2
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    I think the best way would be to st the boot to the openSUSE disk and set a menu item to the Windows.

    You should be able to do that in Yast -boot section. Just be sure that prob for other OS's is checked and then reinstall the grub the Windows should be picked up. Note if that does not work come back since there are manual ways of doing it also

  3. #3
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    Could you break that down for me in a bit more detail? I found something in the Yast Control Center called Boot Loader - that seemed promising. It says I have GRUB2-EFI enabled. I looked into the Boot Loader options, but I'm not sure how to explicitly tell it about Windows 7 on the other drive. The 'Probe Foreign OS' box is checked, but it seems like I need to add a line somewhere to include Windows 7 in the list of boot options. I literally just installed OpenSUSE this afternoon, so I'm not up to speed on where everything is yet. But hopefully we are on the right path here.

  4. #4
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    no you don't add a line you need to uncheck and check the box to make a change and accept. the system should be probed and hope fully found. You may need to turn of secure boot in the EFI for things to link up??? Afterward you can turn it back on

    Note you are using UFI BIOS so things are still a little iffy with that type. You may need to edit the /boot/efi files and how to do that is above my paygrade. Someone else needs to jump in

  5. #5
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    Ok, so I unchecked and rechecked the "probe" box. The secure boot box was already unchecked. The system processes all the data and completes ok, but when I reboot, all I get are options for 13.1 and 13.1 recovery. It is not finding Win7 on the other SSD. Not sure how to proceed.

  6. #6
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    On EFI machine I'm not sure either.

    From the command line as root try

    os-prober

    show use the result

  7. #7
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    Maybe you should show us also as root

    fdisk -l

    note that is a lower case L not a one

  8. #8
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    Doesn't look like os-prober shows much, but here is the output from fdisk -l:

    linux-12nl:~ # os-prober
    No volume groups found
    linux-12nl:~ # fdisk -l

    Disk /dev/sda: 250.1 GB, 250059350016 bytes, 488397168 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk label type: dos
    Disk identifier: 0x6e90e1a7

    Device Boot Start End Blocks Id System
    /dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
    /dev/sda2 206848 488394751 244093952 7 HPFS/NTFS/exFAT
    WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.

    Disk /dev/sdb: 120.0 GB, 120034123776 bytes, 234441648 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk label type: gpt


    # Start End Size Type Name
    1 2048 321535 156M EFI System primary
    2 321536 17108991 8G Microsoft basic primary
    3 17108992 59054079 20G Microsoft basic primary
    4 59054080 234440703 83.6G Microsoft basic primary

    Disk /dev/sdc: 500.1 GB, 500106780160 bytes, 976771055 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk label type: dos
    Disk identifier: 0xe32a7afb

    Device Boot Start End Blocks Id System
    /dev/sdc1 2048 976768064 488383008+ 7 HPFS/NTFS/exFAT

    Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 4096 bytes
    I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    Disk label type: dos
    Disk identifier: 0x0cabd99a

    Device Boot Start End Blocks Id System
    /dev/sdd1 2048 1953521663 976759808 7 HPFS/NTFS/exFAT

    Disk /dev/sde: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    Disk label type: dos
    Disk identifier: 0xe8900690

    Device Boot Start End Blocks Id System
    /dev/sde1 63 1953520064 976760001 7 HPFS/NTFS/exFAT


    So, sda is where Win7 is and sdb is where OpenSUSE is. I have also tried to use the EasyBCD tool from the Win7 side. While I can get it to present a boot menu, I can't get the Linux option to boot me to the sdb (OpenSUSE) partition. So I am working this from both angles. A bit surprising that this is such a difficult task...

  9. #9
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    Would it be helpful (or necessary) to try to reinstall OpenSUSE 13.1 using different install options? I essentially followed the defaults and really didn't understand the implications of UEFI BIOS on the dual-boot process. The Win7 side is now fairly well set up and established, so I definitely don't want to clobber that side or reinstall. But OpenSUSE is still just a clean install, so I don't mind doing it again if it can fix the boot loader problem.

  10. #10
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    Default Re: Dual Boot OpenSUSE 13.1 and Windows 7 from Two SSDs

    Here is the output from efibootmgr -v:

    Code:
    Matrix2:~ # efibootmgr -v
    BootCurrent: 0000
    Timeout: 1 seconds
    BootOrder: 0000,0001,0002
    Boot0000* opensuse      HD(1,800,4e000,05791fba-769d-487e-a662-8d79908f4ae4)File(\EFI\opensuse\grubx64.efi)
    Boot0001* Hard Drive    BIOS(2,0,00)
    Boot0002* CD/DVD Drive  BIOS(3,0,00)P0 DVD DC 16X8X5
    Perhaps this helps?

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