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    • [Seek Help] Adding entrances to boot menu in deepin
    Community Discussion 1172 views · 5 replies ·
    Tofloor
    poster avatar
    le******ck@gmail.com
    deepin
    2021-12-26 11:08
    Author

    Hello.

    I have deepin installed in a hard drive and Windows 10 installed in another hard drive. I am trying to detect the Windows 10 installation so I can choose in the boot menu between deepin and Windows 10 but I can not detect it with grub (says permission denied for sda and deepin is installed in sdc), and I have tried somother things with os-prober but i still can't find the way.

    Could you help me, please?

    Thanks a lot.

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    正直笔尖
    deepin
    2021-12-26 16:39
    #1

    装两块硬盘，两个系统容易出问题​

    Reply View the author
    funicorn
    deepin
    2021-12-26 18:13
    #2 
    sudo fdisk -l
cat /etc/default/grub

    Add the output details.

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    ylov35
    deepin
    2021-12-26 18:28
    #3

    Hi le，

    Sorry I'm new here and I guess it could be the issue of boot. I'd like to translate your post into Chinese so that more people may understand your question.

    Also, there was a post about how to deal with installation issues, written in Chiness though. Here, 不管是先装Win10还是先装Deepin，启动问题轻松搞定- Community - Deepin Technology

    层主有两块硬盘，分别装了win10 和 deepin, 但他无法用 grub 检测到deepin的盘，（提示sda 的许可被拒绝，而 deepin 安装在 sdc 中）。层主已经用 os-prober 等方法，但还没能解决。

    Regards,

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    HualetWang
    deepin
    2021-12-26 19:52
    #4

    Maybe because windows fast boot cause the drive can't be mounted.

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    Juiceee
    deepin
    2022-02-14 04:28
    #5

    Adding solution despite being late so people with same issue in the future can refer here.

    Install os-prober with sudo apt install os-prober.

    Run sudo fdisk -l and note the boot partition. Now run lsblk and make sure the partition is mounted. It should be /boot/efi or /boot. If it is not mounted, mount it under /boot/efii.

    Now run sudo nano /etc/default/grub and add the following line at the end in a new line:

    GRUB_DISABLE_OS_PROBER=false

    Press Ctrl+O and Ctrl+X. Now run sudo update-grub. Now it should find your windows installation and add it to the entry. Nest time you boot, you should see an entry for Windows there.

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