diff --git a/libisoburn/trunk/xorriso/xorriso.1 b/libisoburn/trunk/xorriso/xorriso.1
index a9392b00..1eac0e93 100644
--- a/libisoburn/trunk/xorriso/xorriso.1
+++ b/libisoburn/trunk/xorriso/xorriso.1
@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "Aug 22, 2009"
+.TH XORRISO 1 "Aug 24, 2009"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -800,6 +800,16 @@ the elsewise trustworthy table-of-content scan for those media.
 To be in effect, the -rom_toc_scan setting has to be made before the -*dev
 command which aquires drive and media.
 .TP
+\fB\-calm_drive\fR "in"|"out"|"all"|"on"|"off"
+Reduce drive noise until it is actually used again. Some drives stay alert
+for substantial time after they have been used for reading. This reduces
+the startup time for the next drive operation but can be loud and waste
+energy if no i/o with the drive is expected to happen soon.
+.br
+Modes "in", "out", "all" immediately calm down -indev, -outdev, resp. both.
+Mode "on" causes -calm_drive to be performed automatically after each -dev,
+-indev, and -outdev. Mode "off" disables this.
+.TP
 \fB\-ban_stdio_write\fR
 Allow for writing only the usage of MMC optical drives. Disallow
 to write the result into files of nearly arbitrary type.
@@ -1498,7 +1508,7 @@ Discard the manipulated ISO image and reload it from -indev.
 \fB\-rollback_end\fR
 Discard the manipulated ISO image. End program without loading a new image.
 .TP
-.B Writing the result:
+.B Writing the result, drive control:
 (see also paragraph about settings below)
 .TP
 \fB\-commit\fR
diff --git a/libisoburn/trunk/xorriso/xorriso.c b/libisoburn/trunk/xorriso/xorriso.c
index 53ae323c..d38b484a 100644
--- a/libisoburn/trunk/xorriso/xorriso.c
+++ b/libisoburn/trunk/xorriso/xorriso.c
@@ -4726,6 +4726,7 @@ int Xorriso_new(struct XorrisO ** xorriso,char *progname, int flag)
  m->toc_emulation_flag= 0;
  m->image_start_mode= 0;
  m->image_start_value[0]= 0;
+ m->do_calm_drive= 1;
  m->indev[0]= 0;
  m->in_drive_handle= NULL;
  m->in_volset_handle= NULL;
@@ -7036,6 +7037,11 @@ int Xorriso_status(struct XorrisO *xorriso, char *filter, FILE *fp, int flag)
      Xorriso_status_result(xorriso,filter,fp,flag&2);
  }
 
+ is_default= (xorriso->do_calm_drive & 1);
+ sprintf(line,"-calm_drive %s\n", xorriso->do_calm_drive & 1 ? "on" : "off");
+ if(!(is_default && no_defaults))
+   Xorriso_status_result(xorriso,filter,fp,flag&2);
+
  is_default= (xorriso->grow_blindly_msc2<0);
  sprintf(sfe, "%d", xorriso->grow_blindly_msc2);
  sprintf(line,"-grow_blindly %s\n",
@@ -10521,7 +10527,7 @@ no_volunteer:;
    sprintf(xorriso->info_text, "xorriso: Option -waiti pausing is done.\n");
  }
  if(dev_adr[0]) {
-   hflag= 2|32;
+   hflag= 2 | 32 | 64;
    if(!do_grow)
      hflag|= 8; /* consider overwriteables as blank */
    ret= Xorriso_option_dev(xorriso, dev_adr, hflag);
@@ -13254,6 +13260,27 @@ show_status:;
 }
 
 
+/* Option -calm_drive */
+int Xorriso_option_calm_drive(struct XorrisO *xorriso, char *which, int flag)
+{
+ int gu_flag= 4, ret;
+
+ if(strncmp(which,"in",2)==0)
+   gu_flag|= 1;
+ else if(strncmp(which,"out",3)==0)
+   gu_flag|= 2;
+ else if(strncmp(which,"on",2)==0) {
+   xorriso->do_calm_drive|= 1;
+ } else if(strncmp(which,"off",3)==0) {
+   xorriso->do_calm_drive&= ~1;
+ } else if(strncmp(which,"off",3)==0) {
+ } else
+   gu_flag|= 3;
+ ret= Xorriso_drive_snooze(xorriso, gu_flag);
+ return(ret);
+}
+
+
 /* Option -cd alias -cdi */
 int Xorriso_option_cdi(struct XorrisO *xorriso, char *iso_rr_path, int flag)
 {
@@ -14320,6 +14347,7 @@ int Xorriso_option_cut_out(struct XorrisO *xorriso, char *disk_path,
                 bit4= if the drive is a regular disk file: truncate it to
                       the write start address
                 bit5= do not print toc of aquired drive
+                bit6= do not calm down drive after aquiring it
     @return <=0 error , 1 success, 2 revoked by -reassure
 */
 int Xorriso_option_dev(struct XorrisO *xorriso, char *in_adr, int flag)
@@ -14373,7 +14401,8 @@ int Xorriso_option_dev(struct XorrisO *xorriso, char *in_adr, int flag)
    }
    ret= Xorriso_give_up_drive(xorriso, (flag&3)|((flag&32)>>2));
  } else
-   ret= Xorriso_aquire_drive(xorriso, adr, (flag&(3|32))|(((flag&(8|16))>>1))); 
+   ret= Xorriso_aquire_drive(xorriso, adr,
+                          (flag & (3 | 32 | 64)) | (((flag & (8 | 16)) >> 1))); 
  if(ret<=0)
    return(ret);
  if(xorriso->in_drive_handle == NULL)
@@ -15523,6 +15552,8 @@ int Xorriso_option_help(struct XorrisO *xorriso, int flag)
 "  -rom_toc_scan \"on\"|\"off\"[:\"emul_on\"|\"emul_off\"]",
 "                 Enable scanning for ISO sessions on read-only drives/media",
 "                 resp. on overwriteable media with emulated TOC.",
+"  -calm_drive \"in\"|\"out\"|\"all\"|\"on\"|\"off\"",
+"                 Reduce drive noise until it gets actually used again.",
 "  -assert_volid pattern severity",
 "                 Accept input image only if its volume id matches pattern.",
 "  -charset name  Set the character set name to be used for file name",
@@ -18757,7 +18788,8 @@ int Xorriso_count_args(struct XorrisO *xorriso, int argc, char **argv,
  static char arg1_commands[][40]= {
     "abort_on","acl","add_plainly","application_id","auto_charset",
     "backslash_codes","blank",
-    "cd","cdi","cdx","charset","close","commit_eject","compliance",
+    "calm_drive","cd","cdi","cdx","charset","close",
+    "commit_eject","compliance",
     "dev","dialog","disk_dev_ino","disk_pattern","dummy","eject",
     "iso_rr_pattern","follow","format","fs","gid","grow_blindly","hardlinks",
     "history","indev","in_charset","joliet","list_delimiter","local_charset",
@@ -18969,6 +19001,10 @@ next_command:;
    (*idx)+= 2;
    ret= Xorriso_option_boot_image(xorriso, arg1, arg2, 0);
 
+ } else if(strcmp(cmd,"calm_drive")==0) {
+   (*idx)++;
+   ret= Xorriso_option_calm_drive(xorriso, arg1, 0);
+
  } else if(strcmp(cmd,"cd")==0 || strcmp(cmd,"cdi")==0) {
    (*idx)++;
    ret= Xorriso_option_cdi(xorriso, arg1, 0);
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index 92a6ead4..4c933de5 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.08.24.182839"
+#define Xorriso_timestamP "2009.08.24.183750"
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.c b/libisoburn/trunk/xorriso/xorrisoburn.c
index daa9c5a3..b2a1a505 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.c
+++ b/libisoburn/trunk/xorriso/xorrisoburn.c
@@ -931,6 +931,7 @@ int Xorriso_assert_volid(struct XorrisO *xorriso, int msc1, int flag)
                bit3= if the drive is a regular disk file: truncate it to
                      the write start address
                bit5= do not print toc
+               bit6= do not calm down drive after aquiring it
    @return <=0 failure , 1= ok
            2=success, but not writeable with bit1
            3=success, but not blank and not ISO with bit0
@@ -1248,6 +1249,9 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
      }
    }
  }
+ if((xorriso->do_calm_drive & 1) && !(flag & 64))
+   burn_drive_snooze(drive, 0); /* No need to make noise from start */
+
  ret= 1+not_writeable;
 ex:
  Xorriso_process_msg_queues(xorriso,0);
@@ -12552,3 +12556,33 @@ int Xorriso_md5_end(struct XorrisO *xorriso, void **ctx, char md5[16],
  return(1);
 }
 
+
+/* @param flag bit0=input drive
+               bit1=output drive
+*/
+int Xorriso_drive_snooze(struct XorrisO *xorriso, int flag)
+{
+ int in_is_out_too, ret;
+ struct burn_drive_info *dinfo;
+ struct burn_drive *drive;
+ 
+ in_is_out_too= (xorriso->in_drive_handle == xorriso->out_drive_handle);
+ if((flag & 1) && xorriso->in_drive_handle != NULL) {
+   Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
+                             "on attempt to calm drive", 0);
+   burn_drive_snooze(drive, 0);
+   if(in_is_out_too)
+     {ret= 1; goto ex;}
+ }
+ if((flag&2) && xorriso->out_drive_handle!=NULL) {
+   Xorriso_get_drive_handles(xorriso, &dinfo, &drive,
+                             "on attempt to calm drive", 2);
+   burn_drive_snooze(drive, 0);
+ }
+ ret= 1;
+ex:;
+ Xorriso_process_msg_queues(xorriso,0);
+ return(ret);
+}
+
+
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.h b/libisoburn/trunk/xorriso/xorrisoburn.h
index d2845167..376d7f19 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.h
+++ b/libisoburn/trunk/xorriso/xorrisoburn.h
@@ -470,6 +470,11 @@ int Xorriso_md5_compute(struct XorrisO *xorriso, void *ctx,
 int Xorriso_md5_end(struct XorrisO *xorriso, void **ctx, char md5[16],
                     int flag);
 
+/* @param flag bit0=input drive
+               bit1=output drive
+*/
+int Xorriso_drive_snooze(struct XorrisO *xorriso, int flag);
+
 
 /* A pseudo file type for El-Torito bootsectors as in man 2 stat :
    For now take the highest possible value.