Changed prescription for safe loading of tray before xorrisofs add-on session

xorriso/xorrecord.info

@@ -718,15 +718,18 @@ blank=as_needed -eject padsize=300k image_1.iso
    For the second session xorrisofs needs to know the -msinfo numbers of
 the medium.  Further it will read data from the medium by using the
 system's read-only CD-ROM driver.
-It is advised to load the tray manually or via dd by the CD-ROM driver,
-rather than letting xorrecord do this by its own SCSI driver.  Many
-system CD-ROM drivers do not take notice of xorrecord's activities.
-
-   $ dd if=/dev/sr0 count=1 >/dev/null 2>&1
-Now get the -msinfo numbers:
+Many systems do not take notice of xorrecord's write activities.  It is
+necessary to force their attention by ejecting and reloading the drive
+tray.  Therefore above run uses option -eject.
+Get the -msinfo numbers (and properly reload the tray if it has a motor)
+by:
 $ m=$(xorrecord dev=/dev/sr0 -msinfo)
 
-   and use them with xorrisofs to add ./tree2 to the image as /dir2:
+   Offer a victim to any problem caused by obtrusive demons after tray
+loading:
+$ dd if=/dev/sr0 count=1 >/dev/null 2>&1
+
+   Use the numbers with xorrisofs to add ./tree2 to the image as /dir2:
 
    $ xorrisofs -M /dev/sr0 -C $m -o image_2.iso \
 -J -graft-points /dir2=./tree2
@@ -748,7 +751,18 @@ File: xorrecord.info,  Node: ExIsoFly,  Next: ExAfio,  Prev: ExIsoMulti,  Up: Ex
 =====================================
 
 It is possible to combine the run of *xorrisofs* and 'xorrecord' in a
-pipeline without storing the ISO 9660 image as file on hard disk:
+pipeline without storing the ISO 9660 image as file on hard disk.
+The piped run is more vulnerable to the problem that some systems have
+not enough patience with automatic tray loading and that demons may
+interfere with a first CD-ROM driver read attempt from a freshly loaded
+medium.  It is advised to load the tray manually or via a separate run
+of xorriso with a subsequent run of dd.
+Again, xorriso has the patience and dd is a dispensable victim for
+demons.
+
+   $ m=$(xorrecord dev=/dev/sr0 -msinfo)
+
+   $ dd if=/dev/sr0 count=1 >/dev/null 2>&1
 
    $ xorrisofs -M /dev/sr0 -C $m \
 -J -graft-points /dir2=./tree2 \
@@ -756,8 +770,8 @@ pipeline without storing the ISO 9660 image as file on hard disk:
 -waiti -multi -grow_overwriteable_iso \
 -eject padsize=300k -
 
-   This is also the main use case of program *xorriso* itself, where
-this run would look like:
+   This is also the main use case of program *xorriso* itself, where the
+run would need no system workarounds and simply look like:
 
    $ xorriso -dev /dev/sr0 -joliet on -speed 12 -fs 8m \
 -map ./tree2 /dir2 -commit_eject all
@@ -1017,13 +1031,13 @@ Node: ExFormat31368
 Node: ExDeformat31886
 Node: ExIsoSingle32153
 Node: ExIsoMulti32437
-Node: ExIsoFly34071
-Node: ExAfio34742
-Node: Files35740
-Node: Seealso36296
-Node: Bugreport36659
-Node: Legal37250
-Node: CommandIdx38179
-Node: ConceptIdx41669
+Node: ExIsoFly34181
+Node: ExAfio35373
+Node: Files36371
+Node: Seealso36927
+Node: Bugreport37290
+Node: Legal37881
+Node: CommandIdx38810
+Node: ConceptIdx42300
 
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