Re: [gentoo-user] Problem install Gentoo on New Laptop

[Dirk Heinrichs <dirk.heinrichs.ext@nsn.com>]

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Am Montag, 30. April 2007 schrieb ext Graham Murray:
> Dirk Heinrichs <dirk.heinrichs.ext@nsn.com> writes:
> > Sata support may not be enough. Since all the SATA stuff has been put
> > into the SCSI subsystem, you would need support for SCSI disks (and
> > maybe CDRoms as well):
>
> In the latest kernels, SATA is no longer in the SCSI subsystem but has
> been 'split' into its own libata subsystem.

I just booted 2.6.21.1 (the latest AFAIK) from my /dev/sda, which is a SATA 
drive. If it is sda*, it is the SCSI subsystem, otherwise it would be hda*.

% dmesg|grep sda
SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support 
DPO or FUA
SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB)
sda: Write Protect is off
sda: Mode Sense: 00 3a 00 00
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support 
DPO or FUA
 sda: sda1 sda2 sda3
sd 2:0:0:0: Attached scsi disk sda

So once again: if it is SATA, you need (in addition to the driver for your 
SATA chip):

CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y

and, eventually

CONFIG_BLK_DEV_SR=m

And btw, even PATA is in the SCSI subsystem nowadays (my system has SATA hd, 
but PATA cdrom, attached to an Intel ICH6 chipset):

% dmesg|grep -i scsi
SCSI subsystem initialized
scsi0 : ata_piix
scsi1 : ata_piix
scsi 0:0:0:0: CD-ROM            HL-DT-ST RW/DVD GCC-4481B E106 PQ: 0 ANSI: 5
scsi2 : ata_piix
scsi3 : ata_piix
scsi 2:0:0:0: Direct-Access     ATA      WDC WD800JD-75JN 06.0 PQ: 0 ANSI: 5
SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB)
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support 
DPO or FUA
SCSI device sda: 156250000 512-byte hdwr sectors (80000 MB)
SCSI device sda: write cache: enabled, read cache: enabled, doesn't support 
DPO or FUA
sd 2:0:0:0: Attached scsi disk sda

Bye...

	Dirk
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