Index: uspace/lib/scsi/include/scsi/sbc.h
===================================================================
--- uspace/lib/scsi/include/scsi/sbc.h	(revision 3abf70c73779dc7dc5529512275597a1d116e82d)
+++ uspace/lib/scsi/include/scsi/sbc.h	(revision 4236b18ef8b01c2658d23f54ca802874c8232232)
@@ -50,4 +50,7 @@
 	SCSI_CMD_READ_CAPACITY_16	= 0x9e,
 
+	SCSI_CMD_SYNC_CACHE_10		= 0x35,
+	SCSI_CMD_SYNC_CACHE_16		= 0x91,
+
 	SCSI_CMD_WRITE_6		= 0x0a,
 	SCSI_CMD_WRITE_10		= 0x2a,
@@ -131,4 +134,36 @@
 } scsi_read_capacity_10_data_t;
 
+/** SCSI Synchronize Cache (10) command */
+typedef struct {
+	/** Operation code (SCSI_CMD_SYNC_CACHE_10) */
+	uint8_t op_code;
+	/** Reserved, Sync_NV, Immed, Reserved */
+	uint8_t flags;
+	/** Logical block address */
+	uint32_t lba;
+	/** Reserved, Group Number */
+	uint8_t group_no;
+	/** Number of Logical Blocks */
+	uint16_t numlb;
+	/** Control */
+	uint8_t control;
+} __attribute__((packed)) scsi_cdb_sync_cache_10_t;
+
+/** SCSI Synchronize Cache (16) command */
+typedef struct {
+	/** Operation code (SCSI_CMD_SYNC_CACHE_16) */
+	uint8_t op_code;
+	/** Reserved, Sync_NV, Immed, Reserved */
+	uint8_t flags;
+	/** Logical block address */
+	uint64_t lba;
+	/** Number of Logical Blocks */
+	uint32_t numlb;
+	/** Reserved, Group Number */
+	uint8_t group_no;
+	/** Control */
+	uint8_t control;
+} __attribute__((packed)) scsi_cdb_sync_cache_16_t;
+
 /** SCSI Write (10) command */
 typedef struct {