It took me awhile to figure this out, but if I do an install (5.0.5) on physical hardware, the OS2AHCI Drivers are included in the default list of DASD Drivers (along with DANI's). But if I do the same thing in a VirtualBox install that has the no IDE, but only AHCI controllers, the default driver selection does not include OS2AHCI. I have to always go in and add the drivers to the boot process in order to prevent the dreaded 'OS/2 is unable to operate your hard disks' message.
Anyone else noticed this and is this significant enough that I should open a ticket on it?
Cheers,