[SOLVED] Multiboot Grub mix up windows entries

[Gorštak]

I have a multiboot machine for testing purposes (read: fun) with dozen linux distros along with 3 win versions. When choose win7 from grub menu, it starts win 10 instead of win7. Same happens with grub from other debian based distros (debian itself included). I can boot into win 7 using grub from opensuse, manjaro (arch based) and calculate (gentoo based). I cant find the difference between win7 entries in nonworking debian grub and working calculate grub. Id appreciate any insights :), im no expert, but not a beginner neither.
I posted the same problem on debian forum, but ill post it on forums of all other distros, hoping someone will find the way to fix this.

debian boot info
https://justpaste.it/6huzo

[fehlix]

I have a multiboot machine for testing purposes (read: fun) with dozen linux distros along with 3 win versions.
When choose win7 from grub menu, it starts win 10 instead of win7.

From which grub does this happen?
Please post

Code: Select all

lsblk -f

Hope you have labeled the partitions to easier get visualy identified.
Which one of those grubs you wan to get have fixed first

[Gorštak]

Im rechecking all grubs, it will take some time. But it happens with debian, ubuntu, mint and mx for sure.

Code: Select all

lsblk -f
[судо] лозинка за корисника sloter: 
NAME    FSTYPE LABEL      UUID                                 MOUNTPOINT
sda                                                            
├─sda1  ntfs   w10        CE4E7B084E7AE91B                     
├─sda2  ext4   mint       00b84654-0f33-4d5b-aa67-ba8236b56638 
├─sda3  ext4   serbian    1c33aff6-9f2c-487b-94d4-c622698e08f4 
├─sda4                                                         
├─sda5  ext4   elementary c2d310b8-15d1-46aa-aa96-e45cfea85483 
└─sda6  swap              454cf4a6-a0c9-414c-91ea-1c3c810b6f08 
sdb                                                            
├─sdb1  ntfs   w7         CE7612AF76129873                     
├─sdb2  ext4   fedora     ed22565e-1ee7-4b5a-913b-411428747907 
├─sdb3  ext4   manjaro    928fb127-4289-446f-8f5a-a9e0612b21b8 
├─sdb4                                                         
├─sdb5  swap              cd4c18a3-f09a-4cb1-8f8c-63d04cc077bf 
├─sdb6  ext4   solus      dd0ed7db-4387-442a-a6af-ae1cb81f8b58 
├─sdb7  ext4   slackware  c587e87a-830c-47aa-8831-66e999bfd2aa 
├─sdb8  ext4   opensuse   22a015a6-9b11-4071-8460-a690b87773cd 
├─sdb9  ext4   mageia     e934ebb6-9d19-41b7-ba9e-c3881a95e88f 
├─sdb10 ext4   calculate  48fccc2b-60da-4cb8-9b03-ff8e42f6d23b 
└─sdb11 ntfs   wd         7234121A1B5C0515                     
sdc                                                            
├─sdc1  ntfs   xp         38208A61208A264A                     
├─sdc2  ext4   ubuntu     45295061-d1fb-46f3-8f79-00f09509a5e0 
├─sdc3  ext4   kali       c4e17b36-4ede-4529-96b3-d518e6d634fb 
├─sdc4                                                         
├─sdc5  swap              6484ff0b-13fa-4d17-85e0-2bc615ef54bd [SWAP]
├─sdc6  ext4   debian     b3518023-78a7-40b8-8a7e-3dbf0e655bee 
├─sdc7  ext4   mx         15cd3966-5f18-403c-87dd-a3197ae8b5ae /
├─sdc8  ntfs   hitachi    6864AAC47EFA0462                     
└─sdc9  ntfs   1T         29BF50452249AB8D                     
sr0 

Which one of those grubs you wan to get have fixed first

Im pretty sure the same problem is on all of them, so if you can help me fix the mx grub, ill probably do the same for all others

[fehlix]

Im rechecking all grubs, it will take some time. But it happens with debian, ubuntu, mint and mx for sure.

Please also indicate which one of those is the so called "controling" grub, which is
the one when you select to boot from sda,sdb or sdc, you would see first.

[Gorštak]

Please also indicate which one of those is the so called "controling" grub,

sda - mint
sdb - opensuse
sdc - debian

currentlly

[fehlix]

I've looked into those grub's you send. They all look similar in regards to those three OS's entries.
Suggest you try the attached menuentries for booting into you W10 , W7 an XP.
The difference to the generated ones, is that the attached entries do not use the PBR (partion boot record) to boot
into the bootloader but loading directly the window-bootloader through grub.
At least in my test this type of "chainloading" appears to more reliable compared to the PBR boot method.
Find attached the file custom.cfg, with three grub-menuentries.
Please save as or attached to this file:

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/boot/grub/custom.cfg 

of any of you controlling grubs's (partitions).
Preferable in to the MX Linux as controling grub as this GRUB version I have do similar menuentries working.
After reboot those three menuentries shall be visible at the end/bottom of the GRUB-menu.
Good Luck

[Gorštak]

Find attached the file custom.cfg, with three grub-menuentries.
Please save as or attached to this file:

Code: Select all

/boot/grub/custom.cfg 

of any of you controlling grubs's (partitions).

It worked! I can boot all three of them. Thanks a lot!
I'll try this fix on other grubs. I'll also try http://forums.debian.net/viewtopic.php? ... 78#p694277 to see if that can help and I'll post the results.

EDIT:
Solution from Debian forum works too :)