How to boot Windows UEFI from Debian legacy Grub with two SSD drives?

I am using Debian 12, and I am trying to add a new line in the grub menu. This PC has two SSD drives, the first one has Windows 10 and the second one has Debian 12. **How can I boot Windows from the Debian Grub?** The output of lsblk -f is: NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTS sdb ├─sda1 ext4 1.0 fec4ac01-0518-472e-a773-398e89e38283 378.9G 14% / ├─sda2 └─sda5 swap 1 1bb8cacf-1774-44b8-9ae7-f939de2cf231 [SWAP] nvme0n1 ├─nvme0n1p1 vfat FAT32 4643-C150 ├─nvme0n1p2 ├─nvme0n1p3 ntfs 18964D7F964D5DFE └─nvme0n1p4 ntfs 3480ABF880ABBF2C And the output of sudo blkid /dev/nvme0n1p3 is: BLOCK_SIZE="512" UUID="18964D7F964D5DFE" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="548d364e-48f1-499a-8eb3-75e127585773" After that I updated the grub: sudo update-grub The file in /etc/grub.d/40_custom is: #!/bin/sh exec tail -n +3 $0 # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. menuentry "Windows 10"{ search --fs-uuid --no-floppy --set=root 18964D7F964D5DFE chainloader /EFI/Microsoft/Boot/bootmgfw.efi } But after the reboot, the grub entry appers but there is a message that says that there is not any system... Any ideas to solve this? Thanks in advance!