EFI Partitions missing from Converted MBR disks

[admin]

Using both using Amoei and Easus partition tools to convert MBR to GPT, I find no EFI partition on the converted disk.  I manually added a small Fat32 partition and Rebuilt it as the EFI partition using EasyEUFI, thank you.   But, should there have been EFI information in another partition in the converted disks?  And, is there any problem with the EFI partition being after the OS partition?

Since the third-party software you were using performed the MBR to GPT conversion, you should consult the software developer on these issues. Thanks.