R32 limits primary HDD to 30mb/s (DMA 2)? Anyone HDD faster?

[abently]

Hi guys,

Just trying to diagnose whether its an (1.8" to 2.5") adaptor bottleneck or R32 chipset bottleneck? It's reading the primary HDD as DMA 2 with or without the DVD drive (which is DMA 2) in place...

I was under the impression the R32 supported ATA-100 / DMA 5....

I guess the question is has anyone bench marked their R32 HDD read/write faster than 30mb/s?

Cheers in advance!

[automobus]

Please tell us a little bit more about your 1.8-to-2.5 adaptor. Is it a SATA to PATA translator? If yes, then I have an idea of what is wrong.

I think firmware/BIOS has a routine which conditionally sets host cable detection bit. Where a new SATA device is used, its IDENTIFY DEVICE word 93 is zero, and IBM's overacting 'COPYRIGHTED CODE AND PARTS CONTAINED HEREIN' configures ATA host to not detect Ultra DMA wiring.

[abently]

Ok, should clarify a bit better, it's actually a mSATA to PATA adaptor within a 2.5" Housing. Using the JM20330 chip by the looks of things.

For a list of Bios updates / fixes regarding the R32, I found this list > http://download.lenovo.com/ibmdl/pub/pc ... ud23us.txt

What's your suggestion?

I can always stick in a proper 2.5" PATA drive with 160GB disc platters for max speed and see where that leaves me speed wise.

[automobus]

I have no suggestion. You might decide to research a way to make your operating system ignore cable detection, force higher Ultra DMA modes. Or you might decide to write replacement firmware for your mSATA drive, program it to set word 93. Or there might be a different explanation. Word 93 is just my idea, I did not prove it. Now including your R32, I believe firmwares of the following models are 'word 93 sensitive': A31p, R32, T30, T23, X22 (genus includes X22 X23 X24).

[abently]

Ok, will try a few things when I get back and have time and see where I end up. I've got a Momentus that I can throw in and see it that's normal. Then I might re-install XP and see it that resets it and if it still fails, then will try Win 7 light and see where that ends up.