I'm trying to install Plan9 on my Thinkpad T410. I could boot using the latest Plan9.iso image and the install process gets to the diskpart step (the step after the configfs step) and it complains about not seeing any hard disks.

I have Linux installed in one of the partitions and it shows the following sata controller

00:1f.2 SATA controller [0106]: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller [8086:3b2f] (rev 06)

I'm new to Plan 9. Any suggestions on how to debug this issue?

I see two modes for SATA - AHCI and Compatibility. The above behavior is when SATA is in the AHCI mode. In the Compatibility mode, the install fails earlier - boots from CD, but can't access it after that.