Dual Boot older Toshiba Satelite laptop

I have installed PopOS on a number of laptops but this one is just giving me fits. Current patient: Toshiba E45t-B4106 Intel Core I5-5200U 8GB Ram, 1TB HDD Windows 10 now adding Pop_OS 22.04 LTS I have come across the new 1GB requirement for a /boot partition and just made a new partition in free space and it just works. Generally I add REFIND to handle the dual boot. So this one - REFIND is complaining that: The ESP doesn't seem to be mounted"... Must be VFAT - Aborting... I notice now that the new installer is making the new boot partition EXT4... Is that part of the problem? There is no way to convince it to make that partition FAT32. Grub OS prober is not locating Windows. So even keeping GRUB doesn't really solve my problem. Inside Bios settings - there is no setting to set which partition I want the boot from - so now stuck not able to get into Windows... I think this has to do with the current patient being MBR setup vs GPT? But now I am typing way over my head... Really not sure what to search for or try at this point too. Any thoughts, tips or solutions are appreciated.