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    • Upgrade kills GRUB on UEFI/gpt system triple boot
    Community Discussion 1268 views · 3 replies ·
    Tofloor
    poster avatar
    Platypus
    deepin
    2017-01-11 23:54
    Author
    Hi there,

    I'm writing to give notice to a problem that is not new (possibly a bug but I think not) but I feel needs bringing to developers attention.This has happened to me at least 3 times now.

    My partition is set up on UEFI/gpt so I can run DI alongside another LINUX os and a Windows 10 partition. It's triple boot. Each time there is a kernel upgrade or a significant upgrade of Deepin  that requires a GRUB refresh, I lose my GRUB menu and cannot boot into DI at all.

    The problem seems to be that a GRUB update only defaults to legacy mode. It doesn't seem to recognise the UEFI/gpt partitioning at all.

    The first time I found this I simply reinstalled DI, but it is a lot of work to get things back to where they were. Over past months I have blocked kernel updates to avoid the problem.

    After a lot of reading and failed attempts to reinstall the GRUB-efi-amd64, I simply went to my BIOS and reset it to read legacy parittions. BUT I now don't have Windows 10.

    (I can still get into Windows via the BIOS boot menu - but I miss the convenience of having it listed in GRUB).

    Just thought I should mention this. I have noticed a thread where someone had a similar problem some time ago.
    Cheers
    Platypus



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    stevex
    deepin
    2017-01-12 05:47
    #1
    Hi. This worked for me to get W10 back in grub menu: you can install synaptic package manager to Deepin "sudo apt-get install synaptic"  and then find grub packages using synaptic and mark them for "reinstallation". Then reboot and see if W10 is in boot menu. Hope it works for you.
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    Platypus
    deepin
    2017-01-22 19:59
    #2
    First thing I always install after new Deepin is Synaptic. Can't live without it. I'll give it a go - although I think I've tried before. I'll give it another try.

    Cheers
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    stevex
    deepin
    2017-01-23 08:46
    #3
    https://bbs.deepin.org/post/134051
    First thing I always install after new Deepin is Synaptic. Can't live without it. I'll give it a go  ...

    If reinstalling grub packages doesn't work, you can try installing "grub customizer" and "supergrubdisk":  http://www.supergrubdisk.org/  is always a handy tool to have at hand. Good luck.
    Reply View the author