diff --git a/debug.c b/debug.c
index bd725d6..a00bdbe 100644
--- a/debug.c
+++ b/debug.c
@@ -747,8 +747,8 @@ void HexDump(unsigned char *buf, int len, int step)
       for(j=0; j<step; j++)
       { if(i+j >= len) break;
 	if((j&0x07) == 0x07)
-	      PrintLog("%c ", isprint(buf[i+j]) ? buf[i+j] : '.');
-	else  PrintLog("%c", isprint(buf[i+j]) ? buf[i+j] : '.');
+	      PrintLog("%c ", canprint(buf[i+j]) ? buf[i+j] : '.');
+	else  PrintLog("%c", canprint(buf[i+j]) ? buf[i+j] : '.');
       }
     
       PrintLog("\n");
diff --git a/dvdisaster.h b/dvdisaster.h
index d6f2ab8..fc721fe 100644
--- a/dvdisaster.h
+++ b/dvdisaster.h
@@ -1089,6 +1089,7 @@ void CallMethodDestructors(void);
  *** misc.c 
  ***/
 
+int canprint(char);
 char* sgettext(char*);
 char* sgettext_utf8(char*);
 
diff --git a/large-io.c b/large-io.c
index 38c41a4..01fbb02 100644
--- a/large-io.c
+++ b/large-io.c
@@ -36,6 +36,34 @@
  * Also, individual behaviour may deviate from standard functions. 
  */
 
+#ifdef SYS_MINGW
+
+#include <windows.h>
+
+#define stat _stati64
+#define lseek _lseeki64
+
+/* The original windows ftruncate has off_size (32bit) */
+
+int large_ftruncate(int fd, gint64 size)
+{  gint32 handle;
+
+   if((handle=_get_osfhandle(fd)) == -1)
+     return -1;
+
+   if(_lseeki64(fd, size, SEEK_SET) == -1)
+     return -1;
+
+   if(SetEndOfFile((HANDLE)handle) == 0)
+     return -1;
+
+   return 0;
+}
+
+#else
+  #define large_ftruncate ftruncate
+#endif /* SYS_MINGW */
+
 /*
  * convert special chars in file names to correct OS encoding
  */
@@ -279,7 +307,7 @@ int LargeClose(LargeFile *lf)
 int LargeTruncate(LargeFile *lf, off_t length)
 {  int result;
 
-   result = (ftruncate(lf->fileHandle, length) == 0);
+   result = (large_ftruncate(lf->fileHandle, length) == 0);
 
    if(result)
      lf->size = length;
@@ -319,6 +347,19 @@ FILE *portable_fopen(char *path, char *modes)
    return file;
 }
 
+#ifdef SYS_MINGW
+int portable_mkdir(char *path)
+{  int status;
+   char *cp_path;
+
+   cp_path = os_path(path);
+   status = mkdir(cp_path);
+   g_free(cp_path);
+
+   return status;
+}
+#endif
+
 /***
  *** Convenience functions
  ***/
diff --git a/misc.c b/misc.c
index 4644ebe..6063584 100644
--- a/misc.c
+++ b/misc.c
@@ -22,6 +22,11 @@
 
 #include "dvdisaster.h"
 
+int canprint(char c)
+{
+   return ((isascii(c) && !iscntrl(c)) ? 1 : 0);
+}
+
 /***
  *** gettext() convenience
  ***/
diff --git a/raw-editor.c b/raw-editor.c
index d5a7bf0..e327ea0 100644
--- a/raw-editor.c
+++ b/raw-editor.c
@@ -623,7 +623,7 @@ static void render_sector(raw_editor_context *rec)
 
          gdk_gc_set_rgb_fg_color(Closure->drawGC,Closure->foreground);
 
-	 sprintf(byte, "%c", isprint(buf[idx]) ? buf[idx] : '.');
+	 sprintf(byte, "%c", canprint(buf[idx]) ? buf[idx] : '.');
 	 idx++;
 	 SetText(rec->layout, byte, &w, &h);
 	 gdk_draw_layout(d, Closure->drawGC, x, y, rec->layout);
diff --git a/rs01-fix.c b/rs01-fix.c
index 09f4b3e..31e609f 100644
--- a/rs01-fix.c
+++ b/rs01-fix.c
@@ -726,8 +726,8 @@ void RS01Fix(Image *image)
 
 		       PrintCLI(_("-> Error located in sector %lld at byte %4d (value %02x '%c', expected %02x '%c')\n"),
 				block_idx[location], bi, 
-				old, isprint(old) ? old : '.',
-				new, isprint(new) ? new : '.');
+				old, canprint(old) ? old : '.',
+				new, canprint(new) ? new : '.');
 		    }
 
 		    if(!erasure_map[location])
diff --git a/rs02-fix.c b/rs02-fix.c
index 4de0fff..1097b3d 100644
--- a/rs02-fix.c
+++ b/rs02-fix.c
@@ -734,8 +734,8 @@ void RS02Fix(Image *image)
 
 		 PrintCLI(msg,
 			  sector, bi, 
-			  old, isprint(old) ? old : '.',
-			  new, isprint(new) ? new : '.');
+			  old, canprint(old) ? old : '.',
+			  new, canprint(new) ? new : '.');
 	      }
 
 	      fc->imgBlock[location][offset] ^= gf_alpha_to[mod_fieldmax(gf_index_of[num1] + gf_index_of[num2] + GF_FIELDMAX - gf_index_of[den])];
diff --git a/rs03-fix.c b/rs03-fix.c
index 7cca67e..acc0cb1 100644
--- a/rs03-fix.c
+++ b/rs03-fix.c
@@ -800,8 +800,8 @@ void RS03Fix(Image *image)
 		 
 		 PrintCLI(msg,
 	                  sector, type, bi, 
-			  old, isprint(old) ? old : '.',
-			  new, isprint(new) ? new : '.');
+			  old, canprint(old) ? old : '.',
+			  new, canprint(new) ? new : '.');
 	      }
 
 	      fc->imgBlock[location][offset] ^= gf_alpha_to[mod_fieldmax(gf_index_of[num1] + gf_index_of[num2] + GF_FIELDMAX - gf_index_of[den])];
diff --git a/scsi-layer.c b/scsi-layer.c
index e706809..539f7d0 100644
--- a/scsi-layer.c
+++ b/scsi-layer.c
@@ -124,7 +124,7 @@ int InquireDevice(DeviceHandle *dh, int probe_only)
 	    if(i>0 && !isspace((int)ibuf[i-1])) /* separate the version string */
 	      ibuf[i++] = ' ';
 	 }
-         if(   isprint(ab->buf[j])         /* eliminate multiple spaces and unprintables */
+         if(   canprint(ab->buf[j])         /* eliminate multiple spaces and unprintables */
 	       && (!isspace(ab->buf[j]) || (i>0 && !isspace((int)ibuf[i-1]))))
 	 {    vbuf[i] = ab->buf[j];
 	      ibuf[i++] = ab->buf[j];
@@ -724,11 +724,11 @@ static int query_dvd(DeviceHandle *dh, int probe_only)
 
 	 Verbose("#DVD: physical info contains lead-in data\n");
 	 for(j=0; j<6; j++)
-	    dh->manuID[j] = isprint(buf[0x225+j]) ? buf[0x225+j] : ' ';
+	    dh->manuID[j] = canprint(buf[0x225+j]) ? buf[0x225+j] : ' ';
 	 dh->manuID[6] = ' ';
 
 	 for(j=0; j<6; j++)
-	    dh->manuID[j+7] = isprint(buf[0x22d+j]) ? buf[0x22d+j] : ' ';
+	    dh->manuID[j+7] = canprint(buf[0x22d+j]) ? buf[0x22d+j] : ' ';
 	 dh->manuID[13] = 0;
 
 	 for(j=11; j>=0; j--)
@@ -784,7 +784,7 @@ static int query_dvd(DeviceHandle *dh, int probe_only)
 	    Verbose("#DVD: assuming DVD plus; phy_info4/6 now 0x%x 0x%x\n", phy_info4, phy_info6);
 
 	    for(i=0; i<11; i++)
-	      dh->manuID[i] = isprint(buf[23+i]) ? buf[23+i] : ' ';
+	      dh->manuID[i] = canprint(buf[23+i]) ? buf[23+i] : ' ';
 	    dh->manuID[11] = 0;
 
 	    for(i=10; i>=0; i--)
@@ -828,11 +828,11 @@ static int query_dvd(DeviceHandle *dh, int probe_only)
 	    Verbose("#DVD: assuming DVD dash\n");
 
 	    for(i=0; i<6; i++)
-	      dh->manuID[i] = isprint(buf[21+i]) ? buf[21+i] : ' ';
+	      dh->manuID[i] = canprint(buf[21+i]) ? buf[21+i] : ' ';
 	    dh->manuID[6] = ' ';
 
 	    for(i=0; i<6; i++)
-	      dh->manuID[i+7] = isprint(buf[29+i]) ? buf[29+i] : ' ';
+	      dh->manuID[i+7] = canprint(buf[29+i]) ? buf[29+i] : ' ';
 	    dh->manuID[13] = 0;
 
 	    for(i=11; i>=0; i--)
@@ -1010,7 +1010,7 @@ static int query_bd(DeviceHandle *dh, int probe_only)
    for(i=0,j=-1; i<6; i++)  /* Disc Manufacturer ID */
    {  char c = buf[4+100+i];
 
-      if(isprint(c))
+      if(canprint(c))
       {  dh->manuID[i] = c; j=i;
       }
       else dh->manuID[i] = ' ';
@@ -1019,7 +1019,7 @@ static int query_bd(DeviceHandle *dh, int probe_only)
 
    for(i=0; i<3; i++)       /* Media type ID */
    {  char c = buf[4+106+i];
-      dh->manuID[++j] = isprint(c) ? c : ' ';
+      dh->manuID[++j] = canprint(c) ? c : ' ';
    }
    if(dh->manuID[j] == ',') 
         dh->manuID[j]=0;