Aopen AX4SPE MAX and Promise ATA133 48-bit LBA problems...

syf3r

Senior member
Oct 15, 1999
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I've got an AOpen AX4SPE MAX mobo with a pair of 160Gb Seagate drives connected to Maxtor/Promise ATA 133 T2 controller. Both drives are cable select, on the same channel on the controller, and are using an 18" ATA133 ribbon. I'm having trouble getting access to the full 160GB on both of these drives. I've tried this with 2000pro and XPpro.
Under 2000pro, I installed the OS, patched it to service pack 4, installed the ATA controller, and then installed the drivers for the controller. I then inserted the removable bays that house the two 160's and booted the machine. Under XPpro I installed the OS with the card in the machine already, then patched it to service pack 2, then inserted the drivebays.
In both situations, the ATA controller's BIOS reads the drives as 149GB on bootup. Both OS's allow me to format using NTFS, and explorer shows the capacity 160,039,239,680 bytes. However, when I copy data to the drives, the system freezes up once I hit approx 100GB (approx 106,000,000,000 bytes) on the drive...
Does anyone have any idea what might be causing this? I know about the MS bulletins on enabling LBA mode, but large drives are supposed to run fine under SP4 (win2k) and SP1+ (winXP). What am I missing here?

/syf3r