Hi Peter,

The LiveCD seems to have a problem with your DVD drive. Maybe a IDE
driver problem together with atiixp support. I vaguely remember that
DVD/CD-ROM drives with DMA mode enable can give read-errors.

Can you try the following boot options:
ide=nodma
or
nodma

Further boot options to try (which sometimes can help to read from
DVD/CD drives)
all-generic-ide irqpoll

If this does not help, can you mount CD/DVD on your laptop and send me
the output of "lsmod", and "hdparm /dev/hdc".


Urs


Peter Wainwright wrote:
> On my laptop (HP nx 6125) the livecd and livedvd both fail. Both disks
> can be mounted under Fedora Core or an existing hard-disk installation of
>
> Scientific Linux. The LiveDVD is known to boot correctly on one
> of my systems (HP xw 9300 workstation). However, on the laptop both
> versions fail.
>
> The boot process works up to here:
>
> setup union on /union
> looking for data modules
>
> [ Then the system waits a long time ]
>
> waiting for USB devices, max 9 seconds
> [ various USB hardware messages ]
> creating /dev entries for block devices
> Fatal error occured - Data for LiveCD not found. Are you using SCSI?
>
> [ No, I'm not using SCSI ]
>
> Then I get dropped into a shell.
>
> I then tried to create /tmp/disk and
> mount -t iso9660 /dev/hdc /tmp/disk
>
> I get the following error messages:
>
> hdc: media error (bad sector); status = 0x51 { DriveReady SeekComplete 
> Error }
> hdc: media error (bad sector): error = 0x30
> ide: failed opcode was 100
> ATAPI device hdc:
>   Error: Medium error -- (Sense key=0x03)
>   (reserved error code) -- (asc=0x02, ascq=0x00)
>   The failed "Read 10" packet command was:
>   "28 00 00 00 00 10 00 00 01 00 00 00 00 00 00 00"
>   end_request: I/O error, dev hdc sector 64
> isofs_fill_super: bread failed, dev=hdc, iso_blknum=16, block=16
>
> Can anyone help? Is there a magic boot option that can save the day?
> This is particularly puzzling because the disk is not bad, and the
> kernel and initrd (or initramfs or whatever it is) load ok, so why
> the block read error at this point?
>
> To give an idea of my hardware, here is the output of lspci:
> [prw@ceiriog ~]$ /sbin/lspci
> 00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 01)
> 00:01.0 PCI bridge: ATI Technologies Inc Unknown device 5a3f
> 00:04.0 PCI bridge: ATI Technologies Inc Unknown device 5a36
> 00:05.0 PCI bridge: ATI Technologies Inc Unknown device 5a37
> 00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controlle
> r
> 00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controlle
> r
> 00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controll
> er
> 00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 11)
> 00:14.1 IDE interface: ATI Technologies Inc Standard Dual Channel PCI IDE
>
> Controller ATI
> 00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge
> 00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge
> 00:14.5 Multimedia audio controller: ATI Technologies Inc IXP SB400 AC'97
>
> Audio Controller (rev 02)
> 00:14.6 Modem: ATI Technologies Inc ATI SB400 - AC'97 Modem Controller (r
> ev 02)
> 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
> HyperTransport Technology Configuration
> 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
> Address Map
> 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] D
> RAM
> Controller
> 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
> Miscellaneous Control
> 01:05.0 VGA compatible controller: ATI Technologies Inc ATI Radeon XPRESS
>
> 200M 5955 (PCIE)
> 02:01.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5788 Gigab
> it
> Ethernet (rev 03)
> 02:02.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54
> g]
> 802.11g Wireless LAN Controller (rev 02)
> 02:04.0 CardBus bridge: Texas Instruments PCIxx21/x515 Cardbus Controller
>
> 02:04.2 FireWire (IEEE 1394): Texas Instruments OHCI Compliant IEEE 1394
> Host Controller
> 02:04.3 Mass storage controller: Texas Instruments PCIxx21 Integrated
> FlashMedia Controller
> 02:04.4 Class 0805: Texas Instruments PCI6411, PCI6421, PCI6611, PCI6621,
>
> PCI7411, PCI7421, PCI7611, PCI7621 Secure Digital (SD) Controller
>
> Peter