port-i386/38548: AHCISATA does not support WD2500 SATA disk

[cemkayali%eticaret.com.tr@localhost]

>Number:         38548
>Category:       port-i386
>Synopsis:       AHCISATA does not support WD2500 SATA disk
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-i386-maintainer
>State:          open
>Class:          support
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 30 07:50:01 +0000 2008
>Originator:     Cem K.
>Release:        4.0 - 4.99.61
>Organization:
>Environment:
NetBSD 4.0 NetBSD 4.0 (GENERIC) #0: Sun Dec 16 00:20:10 PST 2007 
builds@wb34:/home/builds/ab/netbsd-4-0-RELEASE/i386/200712160005Z-obj/home/builds/ab/netbsd-4-0-RELEASE/src/sys/arch/i386/compile/GENERIC
 i386
>Description:

If you want to install NetBSD 4.0 and/or NetBSD 4.99.61 from HEAD onto WD2500 
hard disk, installation stops with these messages:

Command: disklabel -w -r -f /tmp/disktab wd0 `diskname` 
Status: Command failed 
-------------------------------------- 
disklabel: partition c: offset past end of unit


And if you carefully check wd0d partition, you see that whole disk is only 67 
MB, not 250 GB.


>How-To-Repeat:

Try to install NetBSD 4.0 to this hard disk. 



>Fix:

No real fix.

If you select IDE controller through BIOS, NetBSD is installed but disk 
performance greatly reduced.

Problem machine: tar -xzvf pkgsrc.tar.gz > 220 secs
Similar machine with AHCI support: tar -xzvf pkgsrc.tar.gz > 80 secs