Windows 10 Migrated disks, boot not working

Hi All,

I migrated my OS/image from a stock HDD to a new SSD. I can boot from the SSD completely fine when the HDD is not connected but when it is connected I get a boot error. I can boot from the SSD using the boot options in the BIOS (Dell) but the boot priority is still set to Windows Boot Manager. I am assuming my partitions/disk migration are fine due to the SSD being to boot but below is a screenshot:



Not sure where to go next here? OS is Windows 10.