Does WinXP SP1 start to support UDMA 6?

[Tseng]

I have a KT333 and Maxtor 40G ATA/133. Does WinXP SP1 support ATA/133?
TIA

 

[Nothinman]

Since you've only got a 40G drive it doesn't really matter, the speed increases are negiligable. The only real usefull feature of ATA/133 is the change to 48-bit LBA addresses for larger drives.

 

[Tseng]

I have confirmed that WinXP SP1 does support ATA/133. The information showed under Primary IDE channel is Ultra DMA Mode 6.

 

[Tseng]

Addition information:

WinXP SP1 + VIA 4-in-1 4.43v = Ultra DMA Mode 6

 

[VirtualLarry]

Originally posted by: Nothinman
Since you've only got a 40G drive it doesn't really matter, the speed increases are negiligable. The only real usefull feature of ATA/133 is the change to 48-bit LBA addresses for larger drives.

Once again, the speed of ATA133/UDMA mode 6, has nothing to do with the support for 48-bit LBA addressing. They are independent features. In fact, the software drivers for my older Promise Ultra66 PCI IDE controller, which only supports up to UDMA mode 4 (ATA66), supports 48-bit addressing with the new Promise Ultra family 2.0.0.29 driver set.

 

[Nothinman]

Once again, the speed of ATA133/UDMA mode 6, has nothing to do with the support for 48-bit LBA addressing

I know they're seperate, but usually they're sold/marketed together.

In fact, the software drivers for my older Promise Ultra66 PCI IDE controller, which only supports up to UDMA mode 4 (ATA66), supports 48-bit addressing with the new Promise Ultra family 2.0.0.29 driver set.

Wouldn't require a firmware update also?

 

[VirtualLarry]

Originally posted by: Nothinman

Once again, the speed of ATA133/UDMA mode 6, has nothing to do with the support for 48-bit LBA addressing

I know they're seperate, but usually they're sold/marketed together.

In fact, the software drivers for my older Promise Ultra66 PCI IDE controller, which only supports up to UDMA mode 4 (ATA66), supports 48-bit addressing with the new Promise Ultra family 2.0.0.29 driver set.

Wouldn't require a firmware update also?

Yes, if the boot drive requires 48-bit LBA support. Same deal as running a larger-than 8GB HD, the BIOS needs to support extended Int13h calls if that is the boot drive, otherwise Windows will take it from there as it boots.