Hard drive not seen by mount when booting using busybox/initrd under 2.6.27-2-generic (Ubuntu)

[Miles Lane]

I get the messages below during the setup of the drives on my machine.
 Is the kernel failing to set up my drives correctly?  One clue is
that it looks as though perhaps BOTH pata_acpi and ata_piix are trying
to handle the hard drives interface???  I am also puzzled by the line
"sda:<6>ata5.00: ATAPI: Optiarc DVD RW AD-7530A", which seems to
indicate that sda is somehow getting confused with my DVD-RW drive.

I get a similar problem when I compile and test a 2.6.27-rc6 kernel.
The only difference is that I also see a message saying that my
modules cannot be found before the mount error occurs.

I tried mounting partitions from my drive from the command line and
all attempts gave the same error:  "device not found".

[    4.459717] ata1: SATA max UDMA/133 abar m1024@0xd8444400 port
0xd8444500 irq 2301
[    4.459720] ata2: DUMMY
[    4.459723] ata3: SATA max UDMA/133 abar m1024@0xd8444400 port
0xd8444600 irq 2301
[    4.459726] ata4: DUMMY
[    5.056152] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[    5.057177] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[    5.057342] ata1.00: ATA-7: Hitachi HTS541616J9SA00, SB4OC70P, max UDMA/100
[    5.057345] ata1.00: 312581808 sectors, multi 16: LBA48 NCQ (depth 31/32)
[    5.058519] ata1.00: ACPI cmd ef/10:03:00:00:00:a0 filtered out
[    5.058686] ata1.00: configured for UDMA/100
[    5.392129] ata3: SATA link down (SStatus 0 SControl 300)
[    5.408396] scsi 0:0:0:0: Direct-Access     ATA      Hitachi
HTS54161 SB4O PQ: 0 ANSI: 5
[    5.464760] pata_acpi 0000:00:1f.1: PCI INT B -> GSI 19 (level,
low) -> IRQ 19
[    5.464798] pata_acpi 0000:00:1f.1: setting latency timer to 64
[    5.464821] pata_acpi 0000:00:1f.1: PCI INT B disabled
[    5.468055] ata_piix 0000:00:1f.1: version 2.12
[    5.468065] ata_piix 0000:00:1f.1: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    5.468109] ata_piix 0000:00:1f.1: setting latency timer to 64
[    5.468195] scsi4 : ata_piix
[    5.468273] scsi5 : ata_piix
[    5.469015] ata5: PATA max UDMA/100 cmd 0x1f0 ctl 0x3f6 bmdma 0x1810 irq 14
[    5.469019] ata6: PATA max UDMA/100 cmd 0x170 ctl 0x376 bmdma 0x1818 irq 15
[    5.478018] Driver 'sd' needs updating - please use bus_type methods
[    5.478163] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
[    5.478192] sd 0:0:0:0: [sda] Write Protect is off
[    5.478195] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    5.478240] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[    5.478344] sd 0:0:0:0: [sda] 312581808 512-byte hardware sectors (160042 MB)
[    5.478369] sd 0:0:0:0: [sda] Write Protect is off
[    5.478372] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    5.478418] sd 0:0:0:0: [sda] Write cache: enabled, read cache:
enabled, doesn't support DPO or FUA
[    5.478423]  sda:<6>ata5.00: ATAPI: Optiarc DVD RW AD-7530A, EX32,
max UDMA/33
[    5.648451] ata5.00: configured for UDMA/33
[    5.648503] ata6: port disabled. ignoring.
[    5.648548] isa bounce pool size: 16 pages
[    5.649976] scsi 4:0:0:0: CD-ROM            Optiarc  DVD RW
AD-7530A  EX32 PQ: 0 ANSI: 5
[    5.661100] Driver 'sr' needs updating - please use bus_type methods
[    5.879315]  sda1 sda2
[    5.879493] sd 0:0:0:0: [sda] Attached SCSI disk
[    5.886208] sd 0:0:0:0: Attached scsi generic sg0 type 0
[    5.886253] sr 4:0:0:0: Attached scsi generic sg1 type 5
[    5.894719] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw
xa/form2 cdda tray
[    5.894725] Uniform CD-ROM driver Revision: 3.20
[    5.894830] sr 4:0:0:0: Attached scsi CD-ROM sr0
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