Coexistence of Centos on Ventoy and Reserved Partitions

[xk-devops]

You mean:
1. You installed ventoy first.
2. Then we installed Centos.
3. you have lost the menu item - download Ventoy.

If so, add the Ventoy boot "menuentry"  to grub Centos.

Thank you for your reply, but I have not studied grub. Could you please add the menu from the grub/grub.cfg file in the second partition directly to the grub.cfg file in Centos. If there is an example, it would be greatly appreciated