Re: really bad performance with ICH7 SATA controller

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> Some output from dmesg:
> ...
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> ide0: I/O resource 0x1F0-0x1F7 not free.
> ide0: ports already in use, skipping probe
> Probing IDE interface ide1...
> hdd: TSSTcorpCD/DVDW SN-S082D, ATAPI CD/DVD-ROM drive
> ide1 at 0x170-0x177,0x376 on irq 15
> hdd: ATAPI 24X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache

You have one of the awkward IDE setups. If you build a kernel with just
libata support and not old IDE your CD should appear
as /dev/scd{something} and run fast.

Alternatively you can do this using a boot option (combined_mode=libata)


Alan
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