Reboot and go into the BIOS config (F12 while on the Dell boot logo). In my case I changed it from MODULES='' to MODULES='ahci'Ĥ.
Add the ahci module to the MODULES= line. If you put the drive into AHCI mode before installing Arch you'll be ok, but if you already have Arch installed it's a bit more complicated because the system will refuse to boot after you switch the SATA controller to AHCI mode (note: if it fails to boot you can switch back to ATA mode to get a bootable system again).ġ. The e6400 ships with the SATA controller in ATA mode, which disables the eSATA port.
