Updater-Script ok so?

Wollte mal Nachfragen an jene die sich mit Custom Rom erstellen auskennen ob dieses updated-script so ok ist. Eigentlich möchte ich auch noch das auf der SD Karte ein Ordner erstellt wird wo Backups drin sind welche man nachflashen kann wenn was sein sollte nur das bekomme ich nicht hin. Die Apps im data Ordner werden ohne Probleme installiert und scheinen auch auf aber wie ich das mit der SD Karte mache soll ist mir nicht klar.

Code:

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ui_print("**************************************");
ui_print("****Willkommen beim Scoty Mod Rom****");
ui_print("**Die Installation wird nun gestartet**");
ui_print("**************************************");
show_progress(0.1, 0);
run_program("/sbin/mount", "/dev/block/mmcblk0p9", "/system");
delete_recursive("/system");
run_program("/sbin/mount", "/dev/block/mmcblk0p10", "/data");
delete("/data/local");
package_extract_file("check_data_app", "/tmp/check_data_app");
set_perm(0, 0, 0777, "/tmp/check_data_app");
run_program("/tmp/check_data_app");
set_perm(2000, 2000, 0771, "/data/local");
set_perm_recursive(1000, 1000, 0771, 0644, "/data/app");
package_extract_dir("system", "/system");
package_extract_dir("data", "/data");
symlink("dumpstate", "/system/bin/dumpcrash");
symlink("toolbox", "/system/bin/cat");
symlink("toolbox", "/system/bin/chmod");
symlink("toolbox", "/system/bin/chown");
symlink("toolbox", "/system/bin/cmp");
symlink("toolbox", "/system/bin/date");
symlink("toolbox", "/system/bin/dd");
symlink("toolbox", "/system/bin/df");
symlink("toolbox", "/system/bin/dmesg");
symlink("toolbox", "/system/bin/getevent");
symlink("toolbox", "/system/bin/getprop");
symlink("toolbox", "/system/bin/hd");
symlink("toolbox", "/system/bin/id");
symlink("toolbox", "/system/bin/ifconfig");
symlink("toolbox", "/system/bin/iftop");
symlink("toolbox", "/system/bin/insmod");
symlink("toolbox", "/system/bin/ioctl");
symlink("toolbox", "/system/bin/ionice");
symlink("toolbox", "/system/bin/kill");
symlink("toolbox", "/system/bin/ln");
symlink("toolbox", "/system/bin/log");
symlink("toolbox", "/system/bin/ls");
symlink("toolbox", "/system/bin/lsmod");
symlink("toolbox", "/system/bin/lsof");
symlink("toolbox", "/system/bin/mkdir");
symlink("toolbox", "/system/bin/mount");
symlink("toolbox", "/system/bin/mv");
symlink("toolbox", "/system/bin/nandread");
symlink("toolbox", "/system/bin/netstat");
symlink("toolbox", "/system/bin/newfs_msdos");
symlink("toolbox", "/system/bin/notify");
symlink("toolbox", "/system/bin/printenv");
symlink("toolbox", "/system/bin/ps");
symlink("toolbox", "/system/bin/reboot");
symlink("toolbox", "/system/bin/renice");
symlink("toolbox", "/system/bin/rm");
symlink("toolbox", "/system/bin/rmdir");
symlink("toolbox", "/system/bin/rmmod");
symlink("toolbox", "/system/bin/route");
symlink("toolbox", "/system/bin/schedtop");
symlink("toolbox", "/system/bin/sendevent");
symlink("toolbox", "/system/bin/setconsole");
symlink("toolbox", "/system/bin/setprop");
symlink("toolbox", "/system/bin/sleep");
symlink("toolbox", "/system/bin/smd");
symlink("toolbox", "/system/bin/start");
symlink("toolbox", "/system/bin/stop");
symlink("toolbox", "/system/bin/sync");
symlink("toolbox", "/system/bin/top");
symlink("toolbox", "/system/bin/umount");
symlink("toolbox", "/system/bin/uptime");
symlink("toolbox", "/system/bin/vmstat");
symlink("toolbox", "/system/bin/watchprops");
symlink("toolbox", "/system/bin/wipe");
set_perm_recursive(0, 0, 0755, 0644, "/system");
set_perm_recursive(0, 2000, 0755, 0755, "/system/bin");
set_perm(0, 0, 0644, "/system/build.prop");
set_perm(0, 3003, 06755, "/system/bin/ip");
set_perm(0, 3003, 02750, "/system/bin/netcfg");
set_perm(0, 3004, 02755, "/system/bin/ping");
set_perm(0, 2000, 06750, "/system/bin/run-as");
set_perm_recursive(1002, 1002, 0755, 0440, "/system/etc/bluetooth");
set_perm(0, 0, 0755, "/system/etc/bluetooth");
set_perm(0, 0, 0755, "/system/etc/be_movie");
set_perm(0, 0, 0755, "/system/etc/be_photo");
set_perm(1000, 1000, 0640, "/system/etc/bluetooth/auto_pairing.conf");
set_perm(3002, 3002, 0444, "/system/etc/bluetooth/blacklist.conf");
set_perm(1002, 1002, 0440, "/system/etc/dbus.conf");
set_perm(1014, 2000, 0550, "/system/etc/dhcpcd/dhcpcd-run-hooks");
set_perm(0, 2000, 0550, "/system/etc/init.goldfish.sh");
set_perm(0, 0, 06755, "/system/bin/su");
symlink("/system/bin/su", "/system/xbin/su");
set_perm_recursive(0, 0, 0755, 0555, "/system/etc/ppp");
set_perm_recursive(0, 2000, 0755, 0755, "/system/xbin");
set_perm(0, 1000, 0755, "/system/xbin/busybox");
symlink("/system/xbin/busybox", "/system/bin/busybox");
package_extract_file("installbusybox", "/tmp/installbusybox");
set_perm(0, 0, 0777, "/tmp/installbusybox");
run_program("/tmp/installbusybox");
show_progress(0.1, 10);
show_progress(0.2, 0);
show_progress(0.2, 10);
package_extract_file("flash_image", "/tmp/flash_image");
set_perm(0, 0, 0777, "/tmp/flash_image");
assert(package_extract_file("zImage", "/tmp/zImage"),
run_program("/tmp/flash_image", "/dev/block/mmcblk0p5", "/tmp/zImage"),
delete("/tmp/zImage"));
assert(package_extract_file("modem.bin", "/tmp/modem.bin"),
run_program("/tmp/flash_image", "/dev/block/mmcblk0p8", "/tmp/modem.bin"),
delete("/tmp/modem.bin"));
delete("/tmp/flash_image");
run_program("/sbin/umount", "/system");
run_program("/sbin/umount", "/data");
ui_print("**************************************");
ui_print("*****Die Installation ist fertig.*****");
ui_print("*Du kannst das Handy jetzt neustarten.*");
ui_print("*******Viel Spass mit meinen Rom*******");
ui_print("**************************************");

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Das Script ist nicht von mir sondern nur bearbeitet wie ich es gerne hätte.