diff --git a/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h b/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h
index 8c8efa1629..908da7c4da 100644
--- a/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h
+++ b/src/add-ons/kernel/busses/scsi/ahci/ahci_defs.h
@@ -94,6 +94,7 @@ typedef struct {
 enum {
 	PORT_CMD_ICC_ACTIVE	 = (1 << 28),	// Interface Communication control
 	PORT_CMD_ICC_SLUMBER = (6 << 28),	// Interface Communication control
+	PORT_CMD_ICC_MASK    = (0xf<<28),	// Interface Communication control
 	PORT_CMD_CR		= (1 << 15),	// Command List Running (DMA active)
 	PORT_CMD_FR		= (1 << 14),	// FIS Receive Running
 	PORT_CMD_FER	= (1 << 4),		// FIS Receive Enable
diff --git a/src/add-ons/kernel/busses/scsi/ahci/ahci_port.cpp b/src/add-ons/kernel/busses/scsi/ahci/ahci_port.cpp
index 40e71950ae..a5af786964 100644
--- a/src/add-ons/kernel/busses/scsi/ahci/ahci_port.cpp
+++ b/src/add-ons/kernel/busses/scsi/ahci/ahci_port.cpp
@@ -68,6 +68,12 @@ AHCIPort::Init()
 
 	// clear error bits
 	fRegs->serr = fRegs->serr;
+
+	// spin up device
+	fRegs->cmd |= PORT_CMD_SUD;
+
+	// activate link
+	fRegs->cmd = (fRegs->cmd & ~PORT_CMD_ICC_MASK) | PORT_CMD_ICC_ACTIVE;
 	
 	// enable FIS receive
 	fRegs->cmd |= PORT_CMD_FER;
@@ -135,7 +141,7 @@ void
 AHCIPort::Interrupt()
 {
 	uint32 is = fRegs->is;
-	TRACE("AHCIPort::Interrupt port %d, status %#08x\n", fIndex, is);
+	TRACE("AHCIPort::Interrupt port %d, status %#08lx\n", fIndex, is);
 
 	// clear interrupts
 	fRegs->is = is;