--- /usr/lib/alterator/backend3/livecd-install.orig	2012-05-24 20:34:41.000000000 +0400
+++ /usr/lib/alterator/backend3/livecd-install	2012-09-30 16:45:37.264009748 +0400
@@ -83,11 +83,51 @@
 # unpack squashfs image
 #
 
+no_unsquashfs=yes
+
 do_install()
 {
     local img="$1";shift
     local dst="$1";shift
     local percent1=
+    local unpacked=
+    local free=
+    local live_mount=
+    local retval=0
+    local blk_tot pct pct_prev dpct
+
+if [ "x$no_unsquashfs" = "xyes" ] ; then
+
+	    live_mount="$( mount | sed '/ type squashfs /!d; s/^.* on [ ]*\([^ ]\+\) type squashfs .*$/\1/')"
+	    if [ "x$live_mount" = "x" ] ; then
+		    do_notify_error "Can't find squashfs mount point"
+		    return 1
+	    fi
+	    unpacked="$(du -sb ${live_mount} | sed 's,^[ ]*\([0-9]\+\).*$,\1,')"
+	    if [ "x$unpacked" = "x" ] ; then
+            	do_notify_error "Can't calculate unpacked squashfs size"
+	        return 1
+	    fi
+    	    free=$(free_space "$dst")
+    	    if [ $unpacked -gt $free ]; then
+ 	    	do_notify_error "No free space to unpack squashfs image"
+	        return 1
+	    fi
+	    do_notify_stage install
+           blk_tot=$[ ${unpacked} / 1024 ]
+           tar cf - . --exclude=dev --exclude=mnt --exclude=proc --exclude=sys \
+	    | { 
+		cd ${dst}
+		LANG=C LC_ALL=C tar xfvR - \
+		| {
+		   pct_prev=0 ; 
+  		   while read dum blk dum  ; do
+			blk=${blk/:/};
+			pct=$[ $blk * 100 / $tot ];
+			dpct=$[ $pct - $pct_prev ] ; 
+			if test $dpct -ge 1 ; then
+				pct_prev=$pct
+				do_notify_status "$pct"
+			fi
+		   done
+		  }
+             }
+	    mkdir -p -- ${dst}/{dev,mnt,proc,sys}
+
+else # default:
 
     if ! [ -r "$img" ]; then
         do_notify_error "Can't read squashfs image $img"
@@ -106,14 +146,14 @@
     percent1="$((percent1/99))"
 
     # calculate size necessary for unpacked squashfs image
-    local unpacked=$(sqfs_size "$img")
+    unpacked=$(sqfs_size "$img")
 
     if [ -z "$unpacked" ]; then
         do_notify_error "Can't calculate unpacked squashfs size"
         return 1
     fi
    
-    local free=$(free_space "$dst")
+    free=$(free_space "$dst")
 
     if [ $unpacked -gt $free ]; then
         do_notify_error "No free space to unpack squashfs image"
@@ -122,7 +162,7 @@
 
     do_notify_stage install
 
-    unsquashfs -force -no-progress -info -dest "$dst" "$img" 2>/dev/null |
+  { unsquashfs -force -no-progress -info -dest "$dst" "$img" 2>/dev/null ; retval=$? ; } |
     {
         local i=0
         local progress=0
@@ -136,6 +176,11 @@
              fi
         done
     }
+    if [ $retval -ne 0 ] ; then
+            do_notify_error "Can't read squashfs image $img"
+            return 1
+    fi
+fi #end of unsquashfs ...
 
     # Set right perms on root directory of installed system
     chmod 0755 "$dst"