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I have a 1TB HDD which I partitioned into sda1 and sda2. I then installed Windows 10 pro on sda1. After that I installed Arch Linux on sda2 by parititioning it as follows
sda2 -> Linux (with boot flag)
sda3 -> swap
sda4 -> files
After installing Arch linux, I only get Arch Linux and Advanced options for arch linux in the grub menu. I've tried running update-grub but I still don't get Windows 10 option. I also made sure I properly shut down (i.e. without quick boot) Windows 10 before installing Arch. When I run fdisk -l, it shows a boot flag in the Windows partition(sda1). How can I make Windows 10 option appear at the grub menu?
Last edited by iambrj (2018-01-29 00:27:27)
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Did you try adding a menu entry for windows? It won't appear to grub automatically.
https://wiki.archlinux.org/index.php/GR … menu_entry
Last edited by ooo (2018-01-28 22:54:33)
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iambrj please post the output of fdisk -l. If I understand correctly the system is MBR/BIOS based. Is the package os-prober installed?
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loqs output of fdisk -l
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x5fcdadc2
Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 921602047 921600000 439.5G 7 HPFS/NTFS/exFAT
/dev/sda2 * 921602048 1026459647 104857600 50G 83 Linux
/dev/sda3 1026459648 1030653951 4194304 2G 8 Linux
/dev/sda4 1030653952 1953525167 922871216 440.1G 83 Linux
Is there any way to know if I'm using GPT or MBR? Obviously, I cannot boot into Windows, so is there any way to know which one I'm using from Arch?
Last edited by iambrj (2018-01-28 23:13:33)
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Please use code tags from commands plus their outputs
Disklabel type: dos
Indicates MBR. The command you used to partition the disk initially would determine if it was MBR or GPT Partitioning
Is os-prober installed? Please also read GRUB#Windows_installed_in_BIOS-MBR_mode
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Yes, os-prober is installed. I have gone through the mentioned article and updated
/boot/grub/custom.cfg
I'm new to this fourm, therefore I don't know the norms here. Thanks for the information.
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Did os-prober detect the Windows installation? Did you regernate grub.cfg after creating custom.cfg? Here is the Code_of_conduct.
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Thank you very much! It all worked fine (I edited the custom.cfg and updated grub then rebooted) and I am in fact writing this reply from Windows. I was stuck with this issue for over a week now. I almost want to throw you a party!
Last edited by iambrj (2018-01-28 23:49:22)
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Please remember to mark your thread as solved by editing the first post and prepending [SOLVED] to the title. And don't forget the tacos at that party
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