I got me a Runcore SATA-SSD, supposing the modded BIOS was able to recognize not only PATA- but also the faster SATA-SSD. Well, I was wrong, at least for my 900A there doesn't seem to be a suitable BIOS that was modded for working with OSX. Is this only a problem with the 900A-BIOS, are there any other guys/gals out there using a SATA-SSD? And what should I do now? I placed a request for a modded 900A-BIOS over at OSXCores, but I don't know how long it will take until there's time to do the mod…
Actually, if you apply a DSDT patch and use a version of PC_EFI/Chameleon that supports them (the latest PC_EFI V9 does) then you don't need a hacked BIOS anymore. Once I applied the DSDT patch on my 901 I was able to revert to a stock Asus BIOS without any ill effects.
Oh! Thanks for the hint. I even had a DSDT patch installed, but it got corrupted just before I exchanged the SSD when I played around with some backups… But after copying back the right boot-file it worked, sort of:
Just in case anyone else also has this problem: With the new SSD I just couldn't get the bootloader to work properly, either there was the "boot0: MBR / boot0: done"-error (using an older Chameleon) or booting couldn't get past the "using 10485 buffer headers and 4096 cluster IO buffer headers" (using a newer Chameleon). But it finally worked using the new PC_EFI v9 aka Chameleon v1.0.12-bootloader :-)