Starterkit R-CarH3 ES 2.0 doesn't support SATA I/F.
BTW, For the questions of H3 SK and M3 SK please use the following. https://elinux.org/Talk:R-Car/Boards/Yocto-Gen3
RenesasJa (talk)
Thank you for response. Noted with appreciation.
Y.S. (talk)