grubconf

#!/bin/bash

echo "=== GRUB CONFIGURATOR ==="

echo "Available disks and partitions:"
lsblk

read -p "Enter the partition where Windows is installed (e.g., /dev/sda2): " win_partition

if [[ $EUID -ne 0 ]]; then
    echo "This script must be run as root (use sudo)."
    exit 1
fi

echo "Removing old 'Install Windows from HDD' entry from GRUB..."
sed -i '/menuentry "Install Windows from HDD"/,/^}/d' /etc/grub.d/40_custom

disk=$(echo "$win_partition" | sed 's/[0-9]//g')
partition=$(echo "$win_partition" | sed 's/[^0-9]//g')

echo "Adding new Windows entry to GRUB..."
cat >> /etc/grub.d/40_custom << EOF

menuentry "Windows" {
    insmod ntfs
    set root=(hd0,$partition)
    chainloader +1
}
EOF

echo "Updating GRUB..."
update-grub

echo "Done! Windows entry has been added. Please reboot to apply changes."