[SOLVED] Dual boot in Mageia 5: cannot find Windows 8.1

[mystere88]

Hello,

I got Mageia 5 two weeks ago and it looks really great. My machine is a Lenovo with Windows 8.1 pre-installed.
The install process of Mageia 5 was quite straigtforward, but I do think have missed some steps regarding UEFI stuff I cannot understand really. When reading some posts on this forum, some preliminary steps are mentioned like
"Turned off Secure boot and fast start" : I don't know how to do this and did not done it....

So my problem is that Mageia works perfectly, but NO WINDOWS in the list of boot options after install. I have tried to use
drakconf->boot menu to set a Windows boot loader, but it seems wrong and when I click it, it says "cannot find Windows..."

So since 2 weeks I'm ignoring Windows 8.1... this is okay, but well it could be better to go into Windows 8.1 when I need it..

Basically, can you tell me how to enable Windows 8.1. on this Mageia install??

Below are some info on the system.

Code: Select all

[root@localhost ~]# uname -a
Linux localhost.localdomain 3.19.8-desktop-3.mga5 #1 SMP Sat Jun 13 17:05:48 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

[root@localhost ~]# 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: gpt
Disk identifier: CB95FB21-842D-4812-80D0-F99F3E404C11

Device          Start        End    Sectors   Size Type
/dev/sda1        2048    2050047    2048000  1000M Windows recovery environment
/dev/sda2     2050048    2582527     532480   260M EFI System
/dev/sda3     2582528    2844671     262144   128M Microsoft reserved
/dev/sda4     2844672  737217769  734373098 350.2G Microsoft basic data
/dev/sda5  1927331840 1953523711   26191872  12.5G Windows recovery environment
/dev/sda6   903331840 1927329791 1023997952 488.3G Linux filesystem
/dev/sda9   737218560  790003077   52784518  25.2G Linux filesystem
/dev/sda10  790003712  798391685    8387974     4G Linux swap
/dev/sda11  798392320  903331839  104939520    50G Linux filesystem

Partition table entries are not in disk order.
[root@localhost ~]# df -k
Filesystem     1K-blocks     Used Available Use% Mounted on
devtmpfs         3929168        0   3929168   0% /dev
tmpfs            3935292     1560   3933732   1% /dev/shm
tmpfs            3935292      832   3934460   1% /run
/dev/sda9       25846548  1207256  23303296   5% /
/dev/sda11      51513972  6908560  41965540  15% /usr
tmpfs            3935292        0   3935292   0% /sys/fs/cgroup
tmpfs            3935292       44   3935248   1% /tmp
/dev/sda2         262144    56224    205920  22% /boot/EFI
/dev/sda6      503832808 48912700 429303776  11% /home
tmpfs             787060       12    787048   1% /run/user/1001


Also a screenshot of Bootloader in Drakconf is attached.

Also a screenshot of Bootloader in Drakconf is attached.

boot-loader.jpeg (47.88 KiB) Viewed 682 times

[benmc]

"Turned off Secure boot and fast start" : I don't know how to do this and did not done it....

you must have turned off secure boot, otherwise you could not have booted to your Mageia install medium.
Turning off fast start is done from Windows when live, never have used win8 so anectdotal information, cant be sure.

from your screenshot you are attempting to use GRUB [legacy] which is not recommended for UEFI.
you need to used GRUB 2, which was the default for a UEFI install.

If all else fails, you can use your install media to re-install the window boot-loader from the rescue menu and re-start.
If that works ok, then you could try to re-install the boot-loader from the rescue menu and see if it then finds both systems

[mystere88]

I will give up Windows and just run Mageia. It's all fine. Thanks.

[Lebarhon]

Hello,
You can find some help here:
https://wiki.mageia.org/en/Mageia_in_du ... 8_and_over
Feel free to make comments here about this new page if there is something wrong or you don't understand.