# IN UEFI BIOS, change bootloader to Debian drive so it will boot debian.
su – root
vi /etc/default/grub
# UNCOMMENT this line as such.
GRUB_DISABLE_OS_PROBER="false"

------------------ grub-customizer tool

# FIND DRIVE UUID THAT HAS WINDOWS "ntfs"

blkid

/dev/mapper/deb1--vg-swap_1: UUID="b7c4c5a4-40bd-4a4a-bfaa-226abf07df2e" TYPE="swap"
/dev/sdb2: BLOCK_SIZE="512" UUID="58F8B0AFF8B08CAE" TYPE="ntfs" PARTUUID="07d5ec7a-02"
/dev/sdb3: BLOCK_SIZE="512" UUID="A4EA4330EA42FDD4" TYPE="ntfs" PARTUUID="07d5ec7a-03"
/dev/sdb1: LABEL="System Reserved" BLOCK_SIZE="512" UUID="76D4AFBCD4AF7CCD" TYPE="ntfs" PARTUUID="07d5ec7a-01"
/dev/mapper/deb1--vg-root: UUID="ac1e1092-e501-49bc-b839-67006ef89234" BLOCK_SIZE="4096" TYPE="ext4"
/dev/sda5: UUID="9xmigV-MtN3-tC0m-FjuC-He9P-MEGg-Fr4KLd" TYPE="LVM2_member" PARTUUID="928bac7e-05"
/dev/sda1: UUID="49a1c3fa-1bd5-489d-82d9-b2c6ce6f45e2" BLOCK_SIZE="1024" TYPE="ext2" PARTUUID="928bac7e-01"

sudo apt install grub-customizer

# EXAMPLE 1 - ADDING WINDOWS TO GRUB  ENTRY - grub-customizer tool
Name: Windows 10 Pro Boot Manager (on /dev/sdb1)
Type: Other

insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  76D4AFBCD4AF7CCD
else
  search --no-floppy --fs-uuid --set=root 76D4AFBCD4AF7CCD
fi
parttool ${root} hidden-
drivemap -s (hd0) ${root}
chainloader +1

# EXAMPLE 2- grub-customizer tool (PREFERRED FOR WINDOWS)

blkid

/dev/nvme0n1p1: UUID="C2E8-153E" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI System Partition" PARTUUID="f5ff6c4f-2e06-41af-a6e9-7fa9e89b374c"
/dev/nvme0n1p2: UUID="08b1a00b-5ef2-4bcc-b961-c3cd03fb18eb" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="1c14e795-7b4e-4ba9-9bd6-7bcb4243b890"
/dev/nvme0n1p3: UUID="X2KznA-F6vs-cdDx-XtG2-43Lf-xl63-T93nVf" TYPE="LVM2_member" PARTUUID="43527f65-3b99-4648-a525-ea8385cad659"
/dev/nvme0n1p4: UUID="27f514ba-37de-4d06-8766-83158994ce5b" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="45f35f65-c072-4d6e-987b-66d693276b93"
/dev/nvme0n1p6: BLOCK_SIZE="512" UUID="AEDA6CECDA6CB1EF" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="214878f3-025d-44b9-a30d-3ceaedb4323e"
/dev/nvme0n1p7: BLOCK_SIZE="512" UUID="089686E59686D29C" TYPE="ntfs" PARTUUID="9166fab8-9063-4d00-a2a5-0bf0e2eddffb"
/dev/nvme1n1: LABEL="1TBNVME" UUID="6e291f1f-9640-420a-8fdc-6468459bcf8d" BLOCK_SIZE="4096" TYPE="ext4"
/dev/sda1: LABEL="2TBSEAGATE" UUID="24e22f8f-5218-4c1c-bb44-970c0a7723fa" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="00033eb0-01"
/dev/sdb1: BLOCK_SIZE="2048" UUID="2026-05-24-15-14-36-00" LABEL="MX-Live" TYPE="iso9660" PTUUID="26cd1e85" PTTYPE="dos" PARTUUID="26cd1e85-01"
/dev/sdb2: SEC_TYPE="msdos" UUID="9300-879C" BLOCK_SIZE="512" TYPE="vfat" PARTUUID="26cd1e85-02"
/dev/mapper/sd--vg-root: UUID="346b83de-4c8d-476a-a4f0-0804d2715348" BLOCK_SIZE="4096" TYPE="ext4"
/dev/nvme0n1p5: PARTLABEL="Microsoft reserved partition" PARTUUID="a53ec058-2834-4597-b086-73b03db6eba8"

Name: Windows 10 Pro Boot Manager (on /dev/nvme0n1p1)
Type: Other

insmod part_gpt
insmod fat
search --no-floppy --fs-uuid --set=root C2E8-153E
chainloader /EFI/Microsoft/Boot/bootmgfw.efi

_______________________________________________________________________
sudo apt-get update
sudo apt-get install --reinstall grub
sudo apt-get dist-upgrade
sudo apt-get upgrade
sudo apt autoremove

Then reboot and try running apt-get dist-upgrade again, the issue should be resolved.
