Cannot select EFI system partion?

[jsullivan1201]

Hello,
I have been trying to install windows 7 to an external hdd and when using this program, I am unable to select the first partition option.

[admin]

Hello,
I have been trying to install windows 7 to an external hdd and when using this program, I am unable to select the first partition option.

The ESP must be a fat32 partition.

[crassh]

same problem here. I'm using a macbook pro retina 2014 and a PC. using the PC i have made 2 partitions on my external seagate HD, a small one, FAT32, and a bigger one, NTFS. with wintousb i have selected as ESP the FAT32 one, and as boot the bigger one. all went great, it installed windows 7, but when i plugged the HD for the first time after the instalation in the macbook it won't boot from the efi partition. I can see the partition, I select it, but nothing happens.

how can I select the original EFI partition in wintousb? I can see it, it is there, it's also fat32 (can do this with easeus), because obviously creating a new fat32 partition doesn't work. Thanks!

[admin]

After successfully installing Windows, have you tried booting it on PC? I don't have a Mac computer, I don't know whether it can run on the MAC.
The first partition is a Microsoft Reserved Partition, I don't think it is a fat32 partition.

[Keyur Sureliya]

[Solution]
1. Delete All the Partitions of HDD,
2. Convert it to "MBR Disk",
3. Create All Partitions Again And You're Good to Go.
4. Now "WinToUSB" will let you select "EFI Partition".