I've installed two instances of Windows 11 and one instance of Ubuntu 23.10 on my laptop with a single SSD.
After install my file system looks like this
sudo lsblk -o NAME,FSTYPE,SIZE,MOUNTPOINT,LABEL
nvme0n1 953.9G
├─nvme0n1p1 vfat 100M /boot/efi
├─nvme0n1p2 16M
├─nvme0n1p3 ntfs 149.5G
├─nvme0n1p4 ntfs 604M
├─nvme0n1p5 ntfs 200G
├─nvme0n1p6 ntfs 310.7G Shared
└─nvme0n1p7 ext4 293G /
sudo fdisk -l
Disk /dev/nvme0n1: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors
Disk model: SAMSUNG MZVL21T0HCLR-00BL2
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 245C7941-919B-4473-8B05-92AA2608EB88
Device Start End Sectors Size Type
/dev/nvme0n1p1 2048 206847 204800 100M EFI System
/dev/nvme0n1p2 206848 239615 32768 16M Microsoft reserved
/dev/nvme0n1p3 239616 313743359 313503744 149.5G Microsoft basic data
/dev/nvme0n1p4 313743360 314980351 1236992 604M Windows recovery environment
/dev/nvme0n1p5 314980352 734410751 419430400 200G Microsoft basic data
/dev/nvme0n1p6 734410752 1386008575 651597824 310.7G Microsoft basic data
/dev/nvme0n1p7 1386008576 2000406527 614397952 293G Linux filesystem
I ended up having a GRUB2 menu with following options:
* Windows Boot Manager
* Ubuntu 23.10
* Additional Ubuntu Options
* . . . . .
If I want to run one of the instances of Windows 11, I have to do next
- Select Windows Boot Manager on first boot
- Then select desired Windows 11 instance
- PC reboots
- Then again select Windows Boot Manager on second boot
- Desired Windows 11 instance is loaded
I find this very lame, and further I come with with following question
QUESTION is it possible to reconfigure GRUB that way that it is possible to load windows instances directly without the Windows Boot Manager?
Additional information:
bcdedit
C:\Windows\System32>bcdedit
Windows Boot Manager
identifier {bootmgr}
device partition=\Device\HarddiskVolume1
path \EFI\Microsoft\Boot\bootmgfw.efi
description Windows Boot Manager
locale en-us
inherit {globalsettings}
default {default}
resumeobject {2ac3aa28-69bf-11ee-b9c2-cbeab994cd57}
displayorder {default}
{current}
toolsdisplayorder {memdiag}
timeout 30
Windows Boot Loader
identifier {default}
device partition=D:
path \Windows\system32\winload.efi
description WINDOWS 11 (1)
locale en-us
inherit {bootloadersettings}
isolatedcontext Yes
allowedinmemorysettings 0x15000075
osdevice partition=D:
systemroot \Windows
resumeobject {2ac3aa28-69bf-11ee-b9c2-cbeab994cd57}
nx OptIn
bootmenupolicy Standard
quietboot No
usefirmwarepcisettings No
sos No
Windows Boot Loader
identifier {current}
device partition=C:
path \Windows\system32\winload.efi
description WINDOWS 11 (2)
locale en-GB
inherit {bootloadersettings}
recoverysequence {2ac3aa26-69bf-11ee-b9c2-cbeab994cd57}
displaymessageoverride Recovery
recoveryenabled Yes
isolatedcontext Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \Windows
resumeobject {2ac3aa24-69bf-11ee-b9c2-cbeab994cd57}
nx OptIn
bootmenupolicy Standard
diskpart
DISKPART> list partition
Partition ### Type Size Offset
Partition 1 System 100 MB 1024 KB
Partition 2 Reserved 16 MB 101 MB
Partition 3 Primary 149 GB 117 MB
Partition 4 Recovery 604 MB 149 GB
Partition 5 Primary 200 GB 150 GB
Partition 6 Primary 310 GB 350 GB
Partition 7 Unknown 292 GB 660 GB
DISKPART> list volume
Volume ### Ltr Label Fs Type Size Status Info
Volume 0 D NTFS Partition 149 GB Healthy
Volume 1 C NTFS Partition 200 GB Healthy Boot
Volume 2 E Shared NTFS Partition 310 GB Healthy
Volume 3 FAT32 Partition 100 MB Healthy System
Volume 4 NTFS Partition 604 MB Healthy Hidden
bcdedit /enum firmware
C:\Windows\System32>bcdedit /enum firmware
Firmware Boot Manager
identifier {fwbootmgr}
displayorder {839d692b-6ccf-11ee-aba5-7404f1de8473}
{bootmgr}
{e8d05f83-69b3-11ee-a0d6-c8f52e4e3bd7}
{e8d05f84-69b3-11ee-a0d6-c8f52e4e3bd7}
{e8d05f85-69b3-11ee-a0d6-c8f52e4e3bd7}
timeout 0
Windows Boot Manager
identifier {bootmgr}
device partition=\Device\HarddiskVolume1
path \EFI\Microsoft\Boot\bootmgfw.efi
description Windows Boot Manager
locale en-us
inherit {globalsettings}
default {default}
resumeobject {2ac3aa28-69bf-11ee-b9c2-cbeab994cd57}
displayorder {default}
{current}
toolsdisplayorder {memdiag}
timeout 30
Firmware Application (101fffff)
identifier {839d692b-6ccf-11ee-aba5-7404f1de8473}
device partition=\Device\HarddiskVolume1
path \EFI\ubuntu\shimx64.efi
description ubuntu
Firmware Application (101fffff)
identifier {e8d05f83-69b3-11ee-a0d6-c8f52e4e3bd7}
description EFI USB Device
Firmware Application (101fffff)
identifier {e8d05f84-69b3-11ee-a0d6-c8f52e4e3bd7}
description EFI DVD/CDROM
Firmware Application (101fffff)
identifier {e8d05f85-69b3-11ee-a0d6-c8f52e4e3bd7}
description EFI Network
