Hvis det er windows (2000/xp) der er problemet (udma66 er ikke som standard slået til):
http://www.mdgx.com/2k1.htmScroll ned til "UDMA/66 ALL THE WAY"
Her er lidt af det:
"If you have any ATA/66 (UDMA/66), or even better, any newer ATA/100 (UDMA/100) or ATA/133 (UDMA/133) EIDE hard disk(s) properly connected (using good quality 80 conductor IDE DMA66 ribbon cables) to the UltraDMA EIDE controller on your motherboard, it is strongly recommended to enable this setting, to take full advantage of the faster transfer rates these drives are capable of, which are (theoretically) close to 66 (ATA/66), 100 (ATA/100) or 133 (ATA/133) MB/second.
NOTE: This does NOT work with SCSI controllers/hard drives OR IF your (E)IDE/(U)ATA hard disks are connected to 3rd party/add-on/proprietary (E)IDE/(U)ATA/RAID drive controllers!
You must be logged on as Administrator to be able to do all this.
This option is disabled by default in all Win2000/XP releases, no matter what (Intel X86 platform) controller/chipset you have.
Note that this setting is NOT activated just by enabling the DMA item from: right-click on your My Computer icon -> click Properties -> Hardware tab -> Device Manager -> IDE ATA/ATAPI controllers item -> select Primary and/or Secondary IDE Channel Properties -> click Advanced Settings tab -> look under Transfer Mode for the "DMA if available" setting (you must also have "Ultra DMA Mode" active under Current Transfer Mode for this to work). Then you need to repeat these steps for ALL your other IDE Devices (drives) found here, numbered this way: Device 0, Device 1 etc. If you only have one IDE Device, select "None" for all others to decrease bootup time. Now reboot when done, so the change(s) can take effect.
To activate the ATA/66 (UDMA/66) setting, you need to run Regedit and go to:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Class\{4D36E96A-E325-11CE-BFC1-08002BE10318}\0000
Note that the "0000" key above might show as "0001", "0002" and/or "0003" on your machine, depending on your particular hardware settings. Select the key(s) appropriate to your case.
Right-click to create a new DWORD [REG_DWORD] Value, call it "EnableUDMA66" (no quotes), and type 1 in the Decimal box to enable ATA/66 (UDMA/66) support.
To disable it, change the Decimal value to 0, or delete "EnableUDMA66" altogether.
IMPORTANT: You also need to make sure the "EnableBigLba" DWORD [REG_DWORD] Value is turned ON under this Registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Atapi\Parameters
If "EnableBigLba" is set to 0, run Regedit, right-click on it and modify the Decimal box to read 1.
This requires 48-bit LBA (Logical Block Addressing) motherboard BIOS support!
Reboot when done.
A MUST: To properly enable the UDMA/66 setting you MUST have your ATA/66/100/133 capable drive(s) hooked up to a SEPARATE IDE channel, OTHER than the one your older (E)IDE fixed/CD/DVD/removable drive(s) [even if ATA/33 (UDMA/33) capable] are connected to (if any)!"
