Hi - I have a wierd problem here. My work laptop and my home laptop are virtually identical - both IBM T41’s, both with XP Pro with SP2 and both with identical Matshita/Panasonic UJDA755y DVD-ROM/CDRW combo drives.
The drives both work very well with the home machine - with a data CD, they will read at the rated x24.
However, put either of them in the work machine and they won’t read at any higher than x4.
There was a problem with the DMA controller on the work machine which I seem to have fixed by downloading a driver from the Lenovo website. DMA is enabled on the secondary IDE channel too.
I’ve copied the newwer versions of MSCDEXNT.EXE and ATAPI.SYS from the home machine and I’ve even updated the firmware on the Matshita form 1.72 to 1.74, the latest I can find.
All of these operations have been followed by a reboot but the updated drive in the work laptop will still only read at x4.
Can anyone help me to make this drive perform to spec please?