CDROM freezes Win98 / works with bootdisk98

[Higg]

Hello,

i've completely reinstalled a working Win95-sytem to Win98
and it seemed to be ok - no resources are marked red.
But when i start the explorer, the system hangs. I found it out to be the CDROM (by disconnecting the cable), but when i start the system with the Win98-bootdisk the CD is pretty good in order - no probs.

Has someone seen anything like this or a few helpful hints?
BTW: I already have done the "system-reconfiguration" by deleting all system-resources and i also tried different CD-drivers by force -> no better result.

thanks to any help

My system:
P166, 64MB EDO, Monster1, SMC8416pnp, SB16, soyo-mobo with spea-V7 onboard, IBM DAQA 3.2,
8x CDROM (they told me to be a Sony)

[This message has been edited by Higg (edited July 28, 1999).]

[bdunn]

Does the CD-ROM work in win 98 safe mode? If so check the settings and if DMA is on turn it off and reboot.

[Higg]

Great! Thanx, that's it!

Now perhaps you can answer me: what for is this DMA-Flag and why does this make the CD-ROM hang?


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[bdunn]

DMA stands for direct memory access. MOST new CD-ROM drives support this feature. Which allows the system faster access to the data. In a win98 install it defaults to on, i think.

The problem is if you have a CD-Drive that doesn't support it the system will lock up as you describe or slow to a crawl.