diff --git a/bochs/iodev/cdrom_beos.cc b/bochs/iodev/cdrom_beos.cc
new file mode 100644
index 000000000..f4de598ae
--- /dev/null
+++ b/bochs/iodev/cdrom_beos.cc
@@ -0,0 +1,57 @@
+#include <SupportDefs.h>
+#include <Drivers.h>
+
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "cdrom_beos.h"
+
+int
+GetLogicalBlockSize(int fd)
+{
+    partition_info  p_info;
+
+    if (ioctl(fd, B_GET_PARTITION_INFO, &p_info) == B_NO_ERROR)
+    {
+    	//dprintf("GetLogicalBlockSize: ioctl suceed\n");
+		return p_info.logical_block_size;
+	}
+    else //dprintf("GetLogicalBlockSize = ioctl returned error\n");
+	return 0;
+}
+
+int
+GetDeviceBlockSize(int fd)
+{
+    struct stat     st;
+    device_geometry dg;
+
+    if (ioctl(fd, B_GET_GEOMETRY, &dg) < 0) 
+    {
+		if (fstat(fd, &st) < 0 || S_ISDIR(st.st_mode))
+	    	return 0;
+		return 512;   /* just assume it's a plain old file or something */
+    }
+    
+    return dg.bytes_per_sector;
+}
+
+off_t
+GetNumDeviceBlocks(int fd, int block_size)
+{
+    struct stat			st;
+    device_geometry		dg;
+
+    if (ioctl(fd, B_GET_GEOMETRY, &dg) >= 0) 
+    {
+		return (off_t)dg.cylinder_count *
+	       (off_t)dg.sectors_per_track *
+	       (off_t)dg.head_count;
+    }
+
+    /* if the ioctl fails, try just stat'ing in case it's a regular file */
+    if (fstat(fd, &st) < 0)
+	return 0;
+
+    return st.st_size / block_size;
+}
diff --git a/bochs/iodev/cdrom_beos.h b/bochs/iodev/cdrom_beos.h
new file mode 100644
index 000000000..8a22d5c0f
--- /dev/null
+++ b/bochs/iodev/cdrom_beos.h
@@ -0,0 +1,10 @@
+#ifndef CDROM_BEOS_H
+#define CDROM_BEOS_H
+
+#include <stddef.h> //for off_t
+
+off_t GetNumDeviceBlocks(int fd, int block_size);
+int GetLogicalBlockSize(int fd);
+int GetDeviceBlockSize(int fd);
+
+#endif