gosh thanks for your help about this subject at first.i managed to reduce the size without a problem i also made the bootable cd it boots succesfully but the unattended mode doesn't work in fact i use a different method for choosing the mode of install there's another .com which uses this ini file. cls color 0x0e print "\n" print " ##### \n" print "|---------------------------------#############------------------------------|\n" print " ############# \n" print " ############# ### ### \n" print " ############# ############### \n" print " ############# ############## \n" print " ############# ############## \n" print " ### ### ############## \n" print " #### CIVIL ########## \n" print " ############# ############## \n" print " ############# ####### \n" print " ############## ### ### \n" print " ############# ############## \n" print " ############# ############## \n" print " ############# ############## \n" print " ## ## ############## \n" print " # ############## \n" print "|----------------------------------------#############-----------------------|\n" print " ####### \n" wait 5 print "\n" cls color 0xdb print "|-----------------------------------------------------------------------------|\n" print " Windows XP (SP1) Pro,[Normal and Unattended] Multi Bootable CD - by civil \n" print "|-----------------------------------------------------------------------------|\n" color 0x09 print "\n" print "\n" print "\n" print "\n" print " 1) Install Windows XP (SP1) Professional (Retail)\n" print " 2) Install Windows XP (SP1) Professional (Unattended)\n" print "\n" color 0x0F print " 3) Boot Microsoft DOS 6.22\n" print " 4) Boot Windows 98 [Version 4.10.2222] with Commands support\n" print " 5) Boot Windows 98 [Version 4.10.2222] with NTFS-Pro support\n" print "\n" print " a) Boot to Floppy Drive A:\ (0x00)\n" print " b) Quit Boot Scriptor & return to the Isolinux command prompt\n" color 0x0E print "\n" print " Esc) Boot to first hard drive (0x80) [Default]\n" print "\n" color 0x0B print "Choose one: \n" color 0x0F ; timeout is 20 seconds, default key is escape getkey 20 setkey esc onkey 1 goto fppp onkey 2 goto fppu onkey 3 goto msd onkey 4 goto w98 onkey 5 goto ntfs_pro onkey a boot 0x00 onkey b goto quit onkey esc boot 0x80 fppp: cd \ chain XPN1.DAT getkey goto exit fppu: cd \ chain XPU1.DAT getkey goto exit msd: memdisk BOOT_MSD.IMG getkey goto exit w98: memdisk w98_cmd.img getkey goto exit ntfs_pro: memdisk w98_ntfs.img getkey goto exit exit: end i also have the winnt sif file in my XPU1 directory (for unattended install) i hex the setupldr.bin and xpboot.bin and renamed them as .dat what can be the problem anyone has an idea . some more info about my cd ; i didn't make it with the winimage i wrote it with nero as bootable by using my loader.bin file the files in my cd are Directory of c:\install 10/08/2003 06:58 PM <DIR> . 10/08/2003 06:58 PM <DIR> .. 10/08/2003 06:58 PM <DIR> I386 10/08/2003 07:52 PM 2,048 xpu1.dat 10/08/2003 07:52 PM 2,048 xpn1.dat 08/23/2001 09:00 AM 10 WIN51 08/23/2001 09:00 AM 10 WIN51IP 08/23/2001 09:00 AM 2 WIN51IP.SP1 08/14/2002 09:00 AM 11,387 SPNOTES.HTM 08/23/2001 09:00 AM 3,204 README.HTM 10/08/2003 06:58 PM <DIR> BSCRIPT 10/08/2003 06:58 PM <DIR> XPN1 10/08/2003 06:58 PM <DIR> XPU1 i checked the setupldr.bin and dat files many times there's no difference according to the gosh's guide :/ please help. LOADER.BIN