Load and write blocks of 512 direct to sd card M5Core2

[Powersoft]

Is it possible to read/write blocks of 512 bytes direct to the sd card?
This without using the M5Stack filesystem.
I know with the SDFat.h library it is possible, there are commands for readBlock(block,buffer) and writeBlock(block, buffer), and buffer is defined as
byte buffer[512].
But I get not compiled this library under my Core2.
Appreciatie any help with this.

Cheers,
Jan