External drive seems to have LMA problem

[BigLar]

I've got a 160 GB SATA running INSIDE a Shuttle SB61G2 with Windows XP (SP2) no problem.

I took a WD 250 GB, changed the jumper configuration to Master from Cable, put a in an extremepcgear ME-720 external case. When I hook it to a USB 2.0 port, it is only recognized as 128 GB when I try to partition.

Doesn't the support of the 160 SATA mean everything is OK inside the computer? I think the external has a Prolific chip set, could that be the problem?

 

[FlyingPenguin]

I assume it the LBA 48bit limit. Some hard drive controllers and early versions of WindowsXP and Win2K have a 128Gb size limit.

Obviously your onboard controller subborts 48bit LBA but I guess your external USB enclosure doesn't.

 

[BigLar]

Originally posted by: FlyingPenguin
I assume it the LBA 48bit limit. Some hard drive controllers and early versions of WindowsXP and Win2K have a 128Gb size limit.

Obviously your onboard controller subborts 48bit LBA but I guess your external USB enclosure doesn't.

Curiously, when I check the supplier, the page boldly says that it supports up to 400GB.

 

[FlyingPenguin]

Hmmm. Very bizarre. Have you tried it in another computer (really shouldn't make a difference)?

 

[BigLar]

OK, got back in town, tried on another computer, no luck.

Opened the case, disassembled, inspected, and found bent pin on jumper array. Straightened the pin and, Viola!, 232 GB!