A couple of years ago I bought a gaming system with a 120GB hard drive. I was told at the time that they could "upgrade me to SCSI", a faster solution for no more money..so I accepted. Recently, I added a Seagate 500GB SATAII hard drive to my system and did a quick initialize under Windows Disk Management. Now I have 2 SCSI drives!! Yet I did NOT specify SCSI in my initialization. I am totally confused. I know that SCSI is "old" technolgy. I don't know how SCSI is entering the picture, how it is being specified and whether I should try to remove it. My objective is to get the best performance posssible by keeping Windows XP on drive C: (MY original 120GB drive) and moving my games folders to drive E: (the new 500GB drive). I would like to avoid re-installing windows and all my apps, if at all possible - unless performance is being drastically reduced by my curent setup. Can some expert (s) give me advice on: 1) where is SCSI specified? 2) does having SCSI imply that I have some SCSI RAID controller (card) plugged into my computer? or is it all specified in SETUP? 3) would I get better performance by running the C:drive as SCSI and the new E: drive as SATAII? with NCQ? Is this possible? 4) I now have data (games) moved from my C: drive to my new E: drive. What do I need to do the maximize performance and/or get rid of SCSI? Anything? 5) I can see no reference to the 32 MB cache that the new disk drive has (see details below). Also NCQ is not turned on yet its available (whatever it is) for this drive?? If, because of SCSI this cache is being bypassed thisi would seem to me to be a big drawback performancewise. Everyone who can help - THANKS!! For reference, going into Windows Control Panel/ System/Hardware/Device Manager/Disk Drives shows: Samsung SP1213C SCSI Disk Device (drive c:) and ST350032 OAS SCSI Disk device (drive e:) Again, in Device manager under IDE ATA/ATAPI Controllers it shows: Primary IDE Channel Seecondary IDE Channel VIA Bus Master IDE Controller While there is a separate entry under SCSI and RAID Controllers: VIA SATA RAID Controller PC Wizard 2008 also confirms this as a VT6420 SATA RAID contoller My motherboard is a Asus A8V-E Deluxe. Here is a partial printout from PCWizard 2008 showing disk details: General Information : Informations Hard Disk SAMSUNG SP1213C : Model : SAMSUNG SP1213C Serial Number : S02AJ10Y501478 Revision : SV100-34 Serial ATA : No Support : ATA/ATAPI-7 Size : 120 GB Cache : 8 192 KB ECC Size : 4 Multiple Sector : 16 IORDY : Yes LBA Mode : Yes DMA Mode : Yes NCQ Mode : No SCT Mode : No DCO Mode : Yes NV Cache : No TCQ Mode : No CFA Power Mode : No SETMAX : Yes - Disabled Multiword DMA Mode : 2 PIO Mode : PIO 4 UDMA Mode max. : 6 (ATA-133) UDMA Mode Enabled : 6 (ATA-133) SMART : No SMART Self-Test : No AAM : Yes - Disabled Write Cache : No Informations Hard Disk ST3500320AS : Model : ST3500320AS Serial Number : 5QM0LW5B Revision : SD15 Serial ATA : No Support : ATA8-ACS Size : 500 GB ECC Size : 4 Multiple Sector : 16 IORDY : Yes LBA Mode : Yes DMA Mode : Yes NCQ Mode : No SCT Mode : No DCO Mode : Yes NV Cache : No TCQ Mode : No CFA Power Mode : No SETMAX : Yes - Disabled Multiword DMA Mode : 2 PIO Mode : PIO 4 UDMA Mode max. : 6 (ATA-133) UDMA Mode Enabled : 6 (ATA-133) SMART : No SMART Self-Test : No AAM : No Write Cache : No SMART Information Disk #1 : Health : 100% (estimated) Performance : 100% (estimated) Raw Read Error Rate (01) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Spin Up Time (03) : 015C0 (Threshold : 000 - Worst : 100 - Max : 100) Start/Stop Count (04) : 000A7 (Threshold : 000 - Worst : 100 - Max : 100) Reallocated Sector Count (05) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Seek Error Rate (07) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Seek Time Performance (08) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Power On Hours Count (09) : 0D52F (Threshold : 000 - Worst : 100 - Max : 100) Spin Retry Count (0A) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Calibration Retry Count (0B) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Power Cycle Count (0C) : 000A7 (Threshold : 000 - Worst : 100 - Max : 100) Temperature (C2) : 00017 (Threshold : 000 - Worst : 148 - Max : 169) Hardware ECC Recovered (C3) : 00004 (Threshold : 000 - Worst : 100 - Max : 100) Reallocation Event Count (C4) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Current Pending Sector Count (C... 00000 (Threshold : 000 - Worst : 100 - Max : 100) Off-Line Uncorrectable Sector C... 00000 (Threshold : 000 - Worst : 100 - Max : 100) Ultra ATA CRC Error Rate (C7) : 00000 (Threshold : 000 - Worst : 200 - Max : 200) Write Error Rate (C8) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) (C9) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) SMART Information Disk #2 : Health : 100% (estimated) Performance : 100% (estimated) Raw Read Error Rate (01) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Spin Up Time (03) : 015C0 (Threshold : 000 - Worst : 100 - Max : 100) Start/Stop Count (04) : 000A7 (Threshold : 000 - Worst : 100 - Max : 100) Reallocated Sector Count (05) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Seek Error Rate (07) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Seek Time Performance (08) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Power On Hours Count (09) : 0D52F (Threshold : 000 - Worst : 100 - Max : 100) Spin Retry Count (0A) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Calibration Retry Count (0B) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Power Cycle Count (0C) : 000A7 (Threshold : 000 - Worst : 100 - Max : 100) Temperature (C2) : 00017 (Threshold : 000 - Worst : 148 - Max : 169) Hardware ECC Recovered (C3) : 00004 (Threshold : 000 - Worst : 100 - Max : 100) Reallocation Event Count (C4) : 00000 (Threshold : 000 - Worst : 100 - Max : 100) Current Pending Sector Count (C... 00000 (Threshold : 000 - Worst : 100 - Max : 100) Off-Line Uncorrectable Sec