BT4 and Debian 10

beeleenk

Every time a cold boot(power off) is performed on a BT4 with Debian 10 the partition with OS is not recognized and the system goes into UEFI shell and I have to use USB stick in order to get into recovery mode and reinstall GRUB. Is there a way to prevent the installed OS destruction? Warm boots(w/o power disconnect) are fine.


Is there a secret setting in the BIOS - stop messing with the hard drive?

Support-03

Hello there,

What is your BIOS version ?
And did you try to disable secure boot in the BIOS ?

beeleenk

Core Version: 5.011
Build  Date and Time: 06/16/2020 10:30:55

Secure Boot Not Active/Disabled

beeleenk

I also never installed Windows. Is Windows supposed to write something to the disk so it is left alone?

Support-03

Hello there,

It sounds like there may be an issue with the GRUB bootloader not being properly installed or configured on the system. You can try reinstalling GRUB and making sure it is properly configured to boot the Debian 10 partition. To reinstall GRUB, you can boot from a live USB or CD and open a terminal. Then, mount the Debian 10 partition and chroot into it:

```
sudo mount /dev/sdaX /mnt  # replace sdaX with the Debian 10 partition
sudo mount --bind /dev /mnt/dev
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys
sudo chroot /mnt
```

Once you're in the chroot environment, you can reinstall GRUB:

```
sudo grub-install /dev/sda  # replace sda with the disk containing the Debian 10 partition
sudo update-grub
```

After that, exit the chroot environment and reboot the system:

exit
sudo reboot

Hopefully, this will fix the issue and prevent the destruction of the installed OS on cold boots.