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    • Grub doesn't see Windows 10 even on other disk
    Community Discussion 668 views · 2 replies ·
    Tofloor
    poster avatar
    m9_
    deepin
    2019-01-14 19:00
    Author
    Edited by m9_ at 2019-1-14 11:05

    Hi guys, I have a problem i'm dealing with for last 48 hours. The GRUB doesn't Windows. I tried dual-boot after giving up on it (I read GRUB doesn't like dual-boot). I reinstall a literally new copy of Windows 10 on separate disk and reinstall a clean copy of Deepin 15.8 on SSD and vualá - it didn't work. I start to think this GRUB 2 hates me
    I checked in grub command-line it seems that grub doesn't even see other disks because when I did 'ls' it showed (hd0) (hd0,gpt1) (hd0,gpt2) which is SSD with Deepin. Could be because I booted the hard disk in UEFI as 1st option? I don't have a GRUB option there only Windows Boot Manager and drives. But when  I did grub-mkdevicemap it says that SSD with Deepin is hd2 and HDD with Windows is hd0. And same when I typed blkid. It showed HDD as sda and SSD as sdc.
    I tried different 40_customs entries. See the file below. And I confirmed that it indeed thinks that SSD is hd0 because when I chose custom entry with root hd0,gpt3 and hd0,gpt4 it said partiotion is not found.

    AGAIN I installed clean Windows 10 on HDD sda and clean Deepin 15.8 on SSD sdc.


    lsblk:
    1. NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
    2. sda      8:0    0 698.7G  0 disk
    3. ├─sda1   8:1    0   499M  0 part
    4. ├─sda2   8:2    0   100M  0 part
    5. ├─sda3   8:3    0    16M  0 part
    6. └─sda4   8:4    0   698G  0 part /media/m9/303C04E93C04ABC2
    7. sdb      8:16   0 931.5G  0 disk
    8. └─sdb1   8:17   0 931.5G  0 part /media/m9/Data
    9. sdc      8:32   0 238.5G  0 disk
    10. ├─sdc1   8:33   0 100.1G  0 part /
    11. └─sdc2   8:34   0 138.4G  0 part /media/m9/GTA Online
    Copy the Code

    blkid:
    1. /dev/sda1: LABEL="M-PM-^RM-PM->M-QM-^AM-QM-^AM-QM-^BM-PM-0M-PM-=M-PM->M-PM-2M-PM-8M-QM-^BM-QM-^L" UUID="0E3EE8203EE80297" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="b85fb38c-6034-480a-9c52-7b9081adf1ac"
    2. /dev/sda2: UUID="1EEC-7E0B" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="ea4f2616-56d6-4495-8035-b527e811df5b"
    3. /dev/sda4: UUID="303C04E93C04ABC2" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="d8a14bbe-57b5-4339-9dd3-4345bf39261a"
    4. /dev/sdb1: LABEL="Data" UUID="A822E1B422E18820" TYPE="ntfs" PTTYPE="atari" PARTUUID="8c90457f-01"
    5. /dev/sdc1: UUID="04a4143a-953a-4d4f-9a1c-76256148b323" TYPE="ext4" PARTLABEL="Basic data partition" PARTUUID="a9f174d4-3385-44e5-90ab-2b2b1ad42e36"
    6. /dev/sdc2: LABEL="GTA Online" UUID="38BA99ACBA9966E2" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="19681373-4e3c-4693-812e-e9232f8c998a"
    7. /dev/sda3: PARTLABEL="Microsoft reserved partition" PARTUUID="3e8fcaa9-de39-41f6-8b1c-bff4a35aa4c1"https://pastebin.com/btTPtzPu
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    grub-mkdevicemap:
    1. (hd0)        /dev/disk/by-id/ata-ST750LM022_HN-M750MBB_S2RRJ9CC601691
    2. (hd1)        /dev/disk/by-id/ata-ST1000LM024_HN-M101MBB_S318J9BH305071
    3. (hd2)        /dev/disk/by-id/ata-Samsung_SSD_840_PRO_Series_S1ATNEAD700951A
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    40_custom
    1. #!/bin/sh
    2. exec tail -n +3 $0
    3. # This file provides an easy way to add custom menu entries.  Simply type the
    4. # menu entries you want to add after this comment.  Be careful not to change
    5. # the 'exec tail' line above.

    7. menuentry 'Windows 10 (gpt1)' --class windows {
    8.     insmod part_gpt
    9.     insmod fat
    10.     set root=(hd0,gpt1)
    11.     chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    12. }

    14. menuentry 'Windows 10 (gpt2)' --class windows {
    15.     insmod part_gpt
    16.     insmod fat
    17.     set root=(hd0,gpt2)
    18.     chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    19. }

    21. menuentry 'Windows 10 (gpt3)' --class windows {
    22.     insmod part_gpt
    23.     insmod fat
    24.     set root=(hd0,gpt3)
    25.     chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    26. }


    29. menuentry 'Windows 10 (gpt4)' --class windows {
    30.     insmod part_gpt
    31.     insmod fat
    32.     set root=(hd0,gpt4)
    33.     chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    34. }

    36. menuentry 'Windows 10 (1)' --class windows {
    37.     set root=(hd0,1)
    38.     chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    39. }

    41. menuentry 'Windows 10 (2)' --class windows {
    42.     set root=(hd0,2)
    43.     chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    44. }
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    Boot Info Script: https://pastebin.com/btTPtzPu
    I put it in pastebin, because it's long. It's shows what GRUB 'suppose' to see.

    I tried the following 40_custom it didn't work either so it's not in my 40 custom: https://bbs.deepin.org/post/130491#=1
    Please help. I'm literally dying I felt like last 48 hours I was in pornhub video rated as rape and I was who was raped by GRUB.
    Reply Favorite View the author
    All Replies
    kitwalz09
    deepin
    2019-01-15 14:32
    #1
    Have you tried sudo os-prober
    Reply View the author
    m9_
    deepin
    2019-01-15 15:42
    #2
    Edited by m9_ at 2019-1-16 13:39
    https://bbs.deepin.org/post/173693
    Have you tried sudo os-prober

    Yes. Os-prober shows nothing. Any ideas?
    Reply View the author