Index: uspace/lib/c/include/vbd.h
===================================================================
--- uspace/lib/c/include/vbd.h	(revision 1626cd4d3269f272038f96a6fa17c3536f1b084c)
+++ uspace/lib/c/include/vbd.h	(revision bf7ddde7202032c4d6e8e1cce492754096b46905)
@@ -59,7 +59,17 @@
 } vbd_disk_info_t;
 
+/** Specification of new partition */
 typedef struct {
+	/** Partition index */
+	int index;
+	/** First block */
+	aoff64_t block0;
+	/** Number of blocks */
+	aoff64_t nblocks;
+	/** Partition type */
+	uint64_t ptype;
 } vbd_part_spec_t;
 
+/** Partition info */
 typedef struct {
 	/** Partition index */