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#1 2022-11-29 10:57:41

Gisbi
Member
Registered: 2022-11-29
Posts: 2

Can't boot into Windows from GRUB, "no such device (hd1,gpt1)"

I had this problem with Windows, where if I selected the disk from the BIOS it'd boot fine, but the GRUB entry would output:
```

error: no such device: 6E90-B87A
error: disk 'hd1,gpt1' not found.
`

Today I had to reinstall GRUB from scratch, after doing so I tried booting Windows for fun, and it actually worked. After doing so, I re-entered Linux, rebooted again into Windows, and I was met with the same error. I've looked far and wide for a solution but I can't find any.

Output of `grub-mkconfig`:

```

❯ sudo grub-mkconfig -o /boot/grub/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-linux
Found initrd image: /boot/initramfs-linux.img
Found fallback initrd image(s) in /boot:  initramfs-linux-fallback.img
Warning: os-prober will be executed to detect other bootable partitions.
Its output will be used to detect bootable binaries on them and create new boot entries.
Found Windows Boot Manager on /dev/sdb1@/efi/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings ...
done
```

Output of `lsblk`:
```

sda           8:0    0   1.8T  0 disk
└─sda1        8:1    0   1.8T  0 part /home/gisbi/storage
sdb           8:16   0 232.9G  0 disk
├─sdb1        8:17   0   100M  0 part
├─sdb2        8:18   0    16M  0 part
├─sdb3        8:19   0 232.2G  0 part
└─sdb4        8:20   0   604M  0 part
nvme0n1     259:0    0 465.8G  0 disk
├─nvme0n1p1 259:1    0   300M  0 part /boot/efi
└─nvme0n1p2 259:2    0 465.5G  0 part /

`

Output of `blkid`:

```

❯ sudo blkid /dev/sdb1
/dev/sdb1: UUID="6E90-B87A" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="4a0865b0-a35d-42a5-a8a5-d8072787587a"
```

If any other logs are needed, please ask, thank you.

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#2 2022-11-29 15:37:08

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 18,993

Re: Can't boot into Windows from GRUB, "no such device (hd1,gpt1)"

Gisbi wrote:

I tried booting Windows for fun, and it actually worked.

The mind boggles.

Is Windows fast boot disabled?  Are you sure?
https://wiki.archlinux.org/title/Dual_b … ibernation


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#3 2022-11-29 16:28:24

Gisbi
Member
Registered: 2022-11-29
Posts: 2

Re: Can't boot into Windows from GRUB, "no such device (hd1,gpt1)"

Okay, the problem was fast boot, really sorry to have missed it somehow. Thanks!

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