Red Hat Bugzilla – Bug 225349
/dev/cdrom is sometimes mapped to /dev/hdc some other times to /dev/hdd
Last modified: 2007-11-30 17:11:54 EST
Description of problem: Sylink /dev/cdrom changes randomly after system restarts. Sometimes it points to /dev/hdc, sometimes to /dev/hdd. My /dev/hdc is a DVDROM, /dev/hdd is a DVDRW. Here's a fragent of dmesg output Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx VP_IDE: IDE controller at PCI slot 0000:00:0f.1 ACPI: PCI Interrupt Link [ALKA] BIOS reported IRQ 0, using IRQ 20 ACPI: PCI Interrupt Link [ALKA] enabled at IRQ 20 ACPI: PCI Interrupt 0000:00:0f.1[A] -> Link [ALKA] -> GSI 20 (level, low) -> IRQ 16 VP_IDE: chipset revision 6 VP_IDE: not 100% native mode: will probe irqs later VP_IDE: VIA vt8237 (rev 00) IDE UDMA133 controller on pci0000:00:0f.1 ide0: BM-DMA at 0xa800-0xa807, BIOS settings: hda:DMA, hdb:pio ide1: BM-DMA at 0xa808-0xa80f, BIOS settings: hdc:DMA, hdd:DMA Probing IDE interface ide0... hda: ST330621A, ATA DISK drive ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 Probing IDE interface ide1... hdc: _NEC DV-5800A, ATAPI CD/DVD-ROM drive hdd: LITE-ON DVDRW SOHW-1653S, ATAPI CD/DVD-ROM drive ide1 at 0x170-0x177,0x376 on irq 15 hda: max request size: 128KiB hda: 58633344 sectors (30020 MB) w/512KiB Cache, CHS=58168/16/63, UDMA(100) hda: cache flushes not supported hda: hda1 hda2 hda3 < hda5 hda6 hda7 > Version-Release number of selected component (if applicable): kernel-2.6.19-1.2895.fc6 udev-095-17.fc6 initscripts-8.45.7-1 How reproducible: randomly, but often (link changes every 2-3 reboots) Steps to Reproduce: 1. Reboot system 2. ls -l /dev/cdrom Actual results: The symlink changes from /dev/hdc to /dev/hdd and back across reboots Expected results: The symlink always points to /dev/hdc
[kite@eagle ~]$ cat /proc/sys/dev/cdrom/info CD-ROM information, Id: cdrom.c 3.20 2003/12/17 drive name: hdd hdc drive speed: 8 20 drive # of slots: 1 1 Can close tray: 1 1 Can open tray: 1 1 Can lock tray: 1 1 Can change speed: 1 1 Can select disk: 0 0 Can read multisession: 1 1 Can read MCN: 1 1 Reports media changed: 1 1 Can play audio: 1 1 Can write CD-R: 1 0 Can write CD-RW: 1 0 Can read DVD: 1 1 Can write DVD-R: 1 0 Can write DVD-RAM: 0 0 Can read MRW: 1 1 Can write MRW: 1 1 Can write RAM: 1 0
fixed with F-8