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atapi device issue in win 7 x64 4g ram

kenthuang0106
in Windows 7

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hi,

first of all. These would be happended only when my ram is 4g and

it is AHCI mode.

If it's 2g or IDE mode, that's will be fine.(both my cpu and os are 64bit)

i have a big problem with my dvd rom (TSST)

That is when i put DVD in that, it is fine.

however, i eject it and the OS told me that DVD is still inside.

Therefore, it cannot read any DVD more if you dont reboot it.

I try to use my utility to debug.

I compare the 4g case(wrong) and 2g case(golden).

I found there is an important clue.

That is all because the command "request sense".

It's not device's fault, because it response the same data in both case.

But host driver seems not seeing information in 4g case.

The data is in the memory which driver allocated, but host driver didnt see it.

I wonder how this could happen.

Edited by kenthuang0106

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