Arch Linux

kgavionics

Member

Registered: 2020-04-02

Posts: 31

Os-prober not detecting windows 10 installation!

Hello
I had to reinstall Archlinux today on a dual boot machine. Windows 10 is installed  on dev/sda2 and the grub was showing it correctly!
this is the output of lsblk

lsblk -f
NAME FSTYPE FSVER LABEL UUID                                 FSAVAIL FSUSE% MOUNTPOINT
sda                                                                         
├─sda1
│    ext4   1.0         5cef5b6e-ae14-4f63-9814-4eccc0b9fdc2                
├─sda2
│    ntfs               1AB8CF12B8CEEB79                                    
└─sda3
     ntfs         New Volume
                        E8ACD4A2ACD46C96                                    
sdb                                                                         
├─sdb1
│    vfat   FAT32       8786-DC86                             448.2M    12% /boot
└─sdb2
     ext4   1.0         2c9af281-8a18-4a07-94e0-c873e44cc251  411.5G     1% /
sdc                                                                         
├─sdc1
│                                                                           
└─sdc2
     ntfs         Crucial
                        CA8E15F88E15DDAF                                    
sdd                                                                         
├─sdd1
│    ntfs               2644E3E644E3B6A9                        1.4T     1% /mnt/Data1
└─sdd2
     ntfs               27944CC70E020DFB             

After installing Arch, I installed ntfs-3g, but os-prober is not detecting windows installation!
What I find weird, there are no windows efi partition  on the /dev/sda ! But,  grub was still detecting Windows 10, before the archlinux install this morning!
Someone has an idea please?

Last edited by kgavionics (2021-04-09 17:50:51)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,527

Re: Os-prober not detecting windows 10 installation!

Please post the output of "lsblk -f" and please use "code" tags instead of some random colorization, https://bbs.archlinux.org/help.php#bbcode

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Roken

Member

From: South Wales, UK

Registered: 2012-01-16

Posts: 1,366

Re: Os-prober not detecting windows 10 installation!

Check /etc/default/grub and look for:

GRUB_DISABLE_OS_PROBER="true"

If it's set to "true" change it and try grub-mkconfig again. They changed the default.

Last edited by Roken (2021-04-09 17:51:46)

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kgavionics

Member

Registered: 2020-04-02

Posts: 31

Re: Os-prober not detecting windows 10 installation!

Check /etc/default/grub and look for:

GRUB_DISABLE_OS_PROBER="true"

If it's set to "true" change it and try grub-mkconfig again. They changed the default.

Thank you for your input, but there's not such option in my /etc/default/grub

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 77,527

Re: Os-prober not detecting windows 10 installation!

Why is sda1 extfs and for clarification: does os-prober not detect windows (when explicitly called) or does the system just not get added to your grub.cfg wen running grub-mkconfig?

Last edited by seth (2021-04-09 18:08:42)

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