On 30 Jun 98 at 11:55, Mark Rode wrote: > ... but now I realize if both dives run at mode I will be slowing > things down on the CD ROM. Probably not true. The original reason for recommending that CD-ROM drives not be on the same channel as your hard drive was because many early CD-ROM drives only supported mode 1 -- and so would force the whole channel to mode 1. [In your case, the old hard drive is having similar effect on the channel.] Your drive is new enough that it supports mode 3 in an effort to avoid that. But it's what, 8x? It's theoretical maximum throughput is 8x150K = 1.2 MBps, only a fraction of the bandwidth provided by mode 1. So I don't believe that running this drive at mode 1 rather than mode 3 will perceptibly slow anything down. > Actually it does work ... I'd check to make sure you can see the full 650 MB of a crowded disk. I seem to recall that some CD-ROM drives, on an IDE controller, could only see about 500 MB on a disk. David G