If you have made Ventoy official partition images and switched one of them into Partition 2 using agFM then you must NOT then try to update the new Ventoy drive because this will completely format and re-write the entire contents of Partition 2 and will also overwrite the E2B backup sectors located at the start of the E2B USB drive and replace the grub4dos boot code.
![](https://easy2boot.xyz/wp-content/uploads/2022/03/image.png)
This means that you cannot restore the original E2B Partition 2 or the original boot code.
The best thing to do is to backup (copy) all the contents of Partition 1 (the first NTFS partition with the payload files, etc.) and also Partition 3 if you made an extra partition and then remake the E2B USB drive using Make_E2B.exe again and copy the files back onto the USB drive.
If you wish to have the latest official Ventoy version, you must re-make the Ventoy partition images again using the \e2b\update e2b\Make_Latest_Ventoy_Partition_Image.cmd script on the second partition of the E2B USB drive.