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#1 2020-09-10 21:52:13

Burner
Member
Registered: 2017-03-26
Posts: 17

Dual boot to windows not working (HP ProBook 455 G7)

Hi,
I'm running Arch on a HP ProBook 455 G7 with a dual boot setup for starting Windows 10.
When starting Windows via grub I get the following message:

Error: not a valid root device.

Press any key to continue ...

The grub config has been created automatically via "sudo grub-mkconfig -o /boot/grub/grub.cfg" and having "os-prober" installed.
I found a workaround to start Windows by using the grub command line and entering "exit" which leads to an exit of the grub boot selection and a booting of Windows.
Is there any way I can achieve this via the grub selection menu directly or what am I doing wrong ending up with the error above?


fdisk -l

sudo fdisk -l
Festplatte /dev/nvme0n1: 476,94 GiB, 512110190592 Bytes, 1000215216 Sektoren
Festplattenmodell: -                     
Einheiten: Sektoren von 1 * 512 = 512 Bytes
Sektorgröße (logisch/physikalisch): 512 Bytes / 512 Bytes
E/A-Größe (minimal/optimal): 512 Bytes / 512 Bytes
Festplattenbezeichnungstyp: gpt
Festplattenbezeichner: -

Gerät             Anfang       Ende  Sektoren  Größe Typ
/dev/nvme0n1p1      2048    2099199   2097152     1G Microsoft Basisdaten
/dev/nvme0n1p2   2099200   84019199  81920000  39,1G Linux-Dateisystem
/dev/nvme0n1p3  84019200  983437311 899418112 428,9G Linux-Dateisystem
/dev/nvme0n1p4 983437312 1000214527  16777216     8G Linux Swap


Festplatte /dev/sda: 232,89 GiB, 250059350016 Bytes, 488397168 Sektoren
Festplattenmodell: - 
Einheiten: Sektoren von 1 * 512 = 512 Bytes
Sektorgröße (logisch/physikalisch): 512 Bytes / 512 Bytes
E/A-Größe (minimal/optimal): 512 Bytes / 512 Bytes
Festplattenbezeichnungstyp: gpt
Festplattenbezeichner: -

Gerät         Anfang      Ende  Sektoren  Größe Typ
/dev/sda1       2048   1085439   1083392   529M Windows-Wiederherstellungsumgebung
/dev/sda2    1085440   1290239    204800   100M EFI-System
/dev/sda3    1290240   1323007     32768    16M Microsoft reserviert
/dev/sda4    1323008 103723007 102400000  48,8G Microsoft Basisdaten
/dev/sda5  243222528 488396799 245174272 116,9G Microsoft Basisdaten
/dev/sda6  103723008 243222527 139499520  66,5G Microsoft Basisdaten

Last edited by Burner (2020-09-14 21:22:15)

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#2 2020-09-16 16:36:32

Burner
Member
Registered: 2017-03-26
Posts: 17

Re: Dual boot to windows not working (HP ProBook 455 G7)

It seems to be a special problem. Does anyone know if this is hardware/BIOS related or GRUB related?

Maybe I have to ask somewhere else depending on the source of the issue.

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#3 2020-09-16 17:44:07

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 10,416

Re: Dual boot to windows not working (HP ProBook 455 G7)

Post

lsblk -f

and the generated grub.cfg

Where is the actual GRUB binary installed?

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