i typed the command and it added found windows 7 also this was on my other laptop with windows 7 and now zorin os and this laptop has an ssd and hdd yeah this laptop has two HDD slots
heres the log :
Generating grub configuration file ...
Found theme: /usr/share/grub/themes/zorin/theme.txt
Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported.
Found linux image: /boot/vmlinuz-4.15.0-45-generic
Found linux image: /boot/vmlinuz-4.15.0-43-generic
Found initrd image: /boot/initrd.img-4.15.0-43-generic
Found linux image: /boot/vmlinuz-4.15.0-30-generic
Found initrd image: /boot/initrd.img-4.15.0-30-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
Found Zorin OS 12.4 (12) on /dev/sda1
Found Windows 7 (loader) on /dev/sdb1