Boot Linux from SDHC

[vittoriop77]

Hello,
I'm tried to run linux on an SDHC but it doesn't boot from its integrated RTS5227 PCI SD Card Reader.
So I tried to use PlopKexec, I boot from the ISO but it doesn't show the SDHC (it shows Hard Disk Partitions, USB, CD).
Do you know if it works ?
Thanks

Vittorio