On Wed, Jun 18, 2003 at 10:22:19AM -1000, HPA Guest 1 wrote:>Vorpahl, Jason Stephen wrote:<large snippage>A plausible theory...I think there is something else going on here, because I have run into the same problem and have done some additional investigations. I think there is some incompatibility between the cd-rom drivers in RH 9 and certain cd-rom drives.I hope you meant "/mnt/cdrom", not "/mnt /cdrom"Here's what I did and found out: I installed RH 9 onto a computer that had been running RH 7.3. I did a complete fresh install, erasing and partitioning the hard drive. RH 9 install gives you a chance to "check" your CDs before the installation process begins. All three CDs checked out fine and there were no problems performing the installation. After the installation was done and the computer re-booted, I tried to mount one of the CDs to install some additional rpm packages. I could not get the cd to mount, as root:
# mount /dev/cdrom
or even
# mount -t iso9660 /dev/cdrom /mnt /cdrom
Yes, just a typo, /mnt/cdrom is correct.
<snip>
So, I took my 3 RH 7.3 CDs and installed RH 7.3 onto the "problem" computer and lo and behold I can mount all kinds of CDs, the 3 7.3 CDs and the 3 RH 9 CDs. What's going on here? CD-ROM drive works fine and mounts CDs with RH 7.3, with RH 9, installs ok, but can't mount CDs. I confirmed this again, by installing RH 9 back on to the machine and again I can't mount CDs.
My (admittedly unresearched theory): A few years ago someone gave me a CDROM drive (for use in a giveaway system I was buildng) that worked fine on my (then) RH 4.x box, but didn't work at all in Windows 95.
After considerably digging, I found that it was conformant with an older version of the ATAPI standard, and that Win95 wanted at least one dot-rev higher than it supported.
Is it possible you've encountered a similar situation, where the ATAPI drivers in the newer kernel no longer support a drive that only provides an older ATAPI standard capability?
Also, what do you see in "dmesg | less" regarding ide, ATAPI, or CDROM when the "bad" drive is in the system?
Here's the stuff from dmesg:
Uniform Multi-Platform E-IDE driver Revision: 7.00beta3-.2.4
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller at PCI slot 00:07.1
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
ide0: BM-DMA at 0xffa0-0xffa7, BIOS settings: hda:DMA, hdb:pio
ide1: BM-DMA at 0xffa8-0xffaf, BIOS settings: hdc:DMA, hdd:pio
hda: Maxtor 6E020L0, ATA DISK drive
blk: queue c03952e0, I/O limit 4095Mb (mask 0xffffffff)
hdc: SAMSUNG CD-ROM SC-140, ATAPI CD/DVD-ROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: attached ide-disk driver.
hda: host protected area => 1
hda: 40718160 sectors (20848 MB) w/2048KiB Cache, CHS=2534/255/63, UDMA(33)
ide-floppy driver 0.99.newide
Partition check:
hda: hda1 hda2 hda3
ide-floppy driver 0.99.newideand later on in dmesg:
hdc: attached ide-cdrom driver.
hdc: ATAPI 40X CD-ROM drive, 128kB Cache, DMA
Uniform CD-ROM driver Revision: 3.12
ISO 9660 Extensions: Microsoft Joliet Level 3
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x50
end_request: I/O error, dev 16:00 (hdc), sector 112
ISOFS: unable to read i-node block
ISOFS: changing to secondary root
hdc: command error: status=0x51 { DriveReady SeekComplete Error }
hdc: command error: error=0x50and some of the error messages are shown.
have you read the documentation in /usr/src/linux*/Documentation/ide.txt?
No, I haven't. Couldn't find in my system? /usr/src/linux only
contained debug and redhat directories. A little searching at www.redhat.com
shows that it's part of the kernel-doc package. I installed it from CD #2 in the
RH 9 set. It puts everything into
/usr/share/doc/kernel-doc-2.4.20.
Time to start reading ide.txt...
Steve
--
---- Fred Smith -- [EMAIL PROTECTED] -----------------------------
"And he will be called Wonderful Counselor, Mighty God, Everlasting Father,
Prince of Peace. Of the increase of his government there will be no end. He
will reign on David's throne and over his kingdom, establishing and upholding
it with justice and righteousness from that time on and forever."
------------------------------- Isaiah 9:7 (niv) ------------------------------
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