@ Ponch thanks, now i can pull it out and see if it is sata or pata, i run PC Wizard and it say that my hard disk is sata i attached the report plz check because i want to make sure which kind before i buy now one. @ Zanskas my hard looks like a sata one, about the size may be i will buy 500GB if it is available in the market. I really appreciate ur help guys, thanks PC Wizard 2008 Version 1.84 ------------------------------------------------------------------------------------------ <<< Drives >>> > Number of Disk Controller : 1 >> General Information Disk Controller : Intel Corporation 82801GBM/GHM (ICH7-M Family) Serial ATA Storage Controller >> Drive Controller Features Mode : IDE AHCI : No > Number of Hard Disk : 1 >> General Information SMART : Version 1.1 >> Informations Hard Disk Hitachi HTS541680J9SA00 IDE Channel : #1 - Master Drive Model : Hitachi HTS541680J9SA00 Serial Number : SB2241SGE91U4E Revision : SB2OC70P Serial ATA : Yes Serial ATA version : 1.0 - (SATA-150) Support : ATA/ATAPI-7 Size : 80 GB Cache : 7 516 KB ECC Size : 4 Multiple Sector : 16 IORDY : Yes LBA Mode : Yes DMA Mode : Yes NCQ Mode : Yes SCT Mode : No DCO Mode : Yes NV Cache : No TCQ Mode : No CFA Power Mode : No SETMAX : Yes - Enabled Multiword DMA Mode : 2 PIO Mode : PIO 4 UDMA Mode max. : 5 (ATA-100) UDMA Mode Enabled : 5 (ATA-100) SMART : Yes - Enabled SMART Self-Test : Yes AAM : Yes - Disabled Write Cache : Yes Streaming Mode : No Power Management : Yes APM Mode : Yes - Enabled APM Level : 16512 PUIS Mode : Yes - Disabled Security Mode : No Trusted Computing : No 48-bit Address : Yes Cylinders : 155061 Heads : 16 Sectors per Track : 63