WHILE READING THE FIRST TOKEN FROM SD CARD (TRANSEND 4gb) I GET ONLY 0XFF NOT 0XFE (Manjunath N N)

HI i am trying to write and read raw data from micro sd card(TRANSEND 4GB) through spi with pic18F65J50 but writing is working fine but reading is not working help me any one.tools used: ide:mplab 8.92.00 version os: windows7 programming kit: pickit2 here..