klt
100-250-et szoktak irni amúgy legtöbb helyen.
Engem meg nem erdekel ha 600M - had legyen inkabb tobb mint kevesebb.
https://www.ctrl.blog/entry/esp-size-guide.html
On the Linux side, the newest versions of Debian, openSUSE, and Ubuntu appears to be following the sizing suggestion from The Boot Loader Specification which suggests that the ESP partition should be about 477 MiB (500 MB).
The UEFI System Partition should be at least 260 MiB (273 MB) to ensure its properly formatted with FAT32 so that you avoid UEFI implementation compatibility issues.
Ha a minimum 273M es az ajanlott 500M, akkor a 600M meg pont idealis is lehet.