Broken Win startup after Manjaro reinstall

Support
1

I reinstalled Manjaro (Gnome / 21.0) for full disk encryption.
After the reinstall on the same internal NVME Disk, I cannot access the second internal NVME for boot my Windows 10. It’s shown in the Lenovo Bootmanager, but stucks in some kind of loop and dies on a screen before showing anything from the Win boot process like the splash.

Is there some way to fix this?

I cannot access Win (no boot media) to fix it with this solution Recover/Create EFI Partition Windows 11/10 When EFI Boot Partition Missing – EaseUS

Its possible to first load GRUB somehow then manually choose Win. But GRUB isn’t installed yet.

Any ideas?

2

Hello @HansD :wink:

At least this information is needed to get a picture of you have done:

sudo parted -l

When you choose Manjaro at UEFI bootloader, then it loads GRUB.

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gives me:

Model: ATA TS512GMTS430S (scsi)
Disk /dev/sda: 512GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End    Size   File system  Name  Flags
 1      1049kB  512GB  512GB  ntfs         win   msftdata


Model: SAMSUNG MZVLW512HMJP-000L7 (nvme)
Disk /dev/nvme0n1: 512GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End    Size    File system  Name  Flags
 1      2097kB  317MB  315MB   fat32              boot, esp
 2      317MB   494GB  493GB
 3      494GB   512GB  18,3GB
4

Ah I see. You share one efi partition. In general it works that way if everything is default, but to be secure, better use one little efi partition for each OS. So each OS will not touch each other, but grub can still find other OS’s on other efi partitions.

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Ok, it happened unintentionally. I installed Manjaro, then Win10 (then bootloader got ****** and win10 needed to be prevented with native (i think its legacy) lenovo bootloader), then I just reinstalled manjaro on this disk again.

I may try “UEFI only” in Bios next.
Is there a different option?

6

UEFI only is a good choice. Since Linux boots, you should create a new efi partition on sda and repair windows somehow and let it use this efi partition. But there i am not an expert. Never done it.

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