Updated for compatibility with TempleOS 6/5/2017

README.md

@@ -14,6 +14,10 @@ Currently, you can use redseafs to create/modify/read RedSea ISO.C files on any
 
 Specify `--rw` to commit writes to ISO.C file, otherwise discarded on unmount.
 
+Specify `--2k` to pad ISO.C file to multiple of 2048 bytes, for compatibility with VirtualBox virtual CD or physical disc ONLY 
+
+(2k padded ISO.C files will not mount with TempleOS `MountFile()`, you will get `ERROR: Not RedSea`)
+
 If the ISO.C file does not exist, a blank filesystem will be created (and written on unmount if `--rw` specified.)
 
 `fusermount -u <mount_point>` to unmount

isoc-mount

@@ -20,6 +20,8 @@ if len(sys.argv) < 3:
     print "Usage: " + sys.argv[0] + " [--rw] [--2k] <filename.ISO.C> <mount_point>"
     print "       --rw:    commit writes to ISO.C file, otherwise discarded on unmount."
     print "                If the ISO.C file does not exist, a new one will be created."
+    print "       --2k:    Pad ISO.C to multiple of 2048 bytes                         "
+    print "                (for VirtualBox or physical disk only)                      "
     sys.exit()
 
 os.system('"' + sys.argv[0][:sys.argv[0].rfind("/")+1] + 'isoc.py" "' + sys.argv[1] + '" "' + sys.argv[2] + '" "' + rw + '" "' + pad + '" &')

isoc.py

@@ -192,8 +192,9 @@ def write_iso_c(self, iso_c_file, pad):
                 file.seek(int(f['clus']*RS_BLK_SIZE))
                 file.write(self.data[(d+'/'+f['filename']).replace("//","/")])    
 
-    # Set counter to byte multiple 2048
-    de_clus_ctr=roundup(de_clus_ctr)
+    # If --2k, Set counter to byte multiple 2048
+    if int(pad) == 1:
+        de_clus_ctr=roundup(de_clus_ctr)
 
     # Write to EOF
     file.seek(RS_DRV_OFFSET+int(de_clus_ctr*RS_BLK_SIZE)-1)