FC5 Users:
With FC5/2.6 Kernels it appears DMA for CD-ROM Drives is enabled by
default, which does NOT work properly with my Drive/System... During
Installation I had problems with the Media Test failing (even though those
same CD-Rs which compared fine under CentOS3/2.4 Kernel) and Anaconda
would complain about unreadable RPMs part way through Installation...
Although typing "linux ide=nodma" at the installation's boot prompt did
allow the Media Tests and the Installation itself to complete, running the
installed system with "ide=nodma" effects harddisk performance!!! On my
installed system one solution was enabling IDE-SCSI Support on CD-ROM
Drive, although that generates a warning at boot time:
ide-scsi is deprecated for cd burning! Use ide-cd and give dev=/dev/hdX as device
and therefore may NOT be good long term solution... FC5 does NOT appear
to respond to the boot-time parameter "nocddma" and previously HDPARM
included a SYSV INIT Script allowing DMA control over individual devices
(which appears to have been dropped)... Does FC5 provide another
mechanism for controlling the DMA Settings on individual Devices???
Lawrence Houston -- (fedora@xxxxxxxxxxxxxxxxxxxxx)
