Kernel panic during boot (Can't get irq for primary IDE!)

Thomas Iversen (zensonic@diku.dk)
Tue, 27 Oct 1998 09:11:48 +0100


Hello there!

With recent kernels (2.1.125) I sometimes get the following sequence at
boot. I have tried to get at clear picture of what's going on, and what
triggers the kernel panic. I found that for this panic to happend (it seems
this way to me!), I must boot 2.1.125 as the first OS after I power on the
machine. If I boot 2.0.36 or Win95, the system is having no problems
finding my IDE channels. After that a reboot into 2.1.125 works like a
charm! ;-) Not that big a problem, cause when first 2.1.125 is up'n'running
theres no problem, but it puzzels me (and maybe others?). Anybody got any
clues? Is my hardware faulty, or is it a software problem?

<the error>
PIIX3: IDE Controller on PCI bu 00 dev 39
PIIX3: not 100% native mode will probe irqs later
ide0: BM-DMA at 0xe800-0xe807, bios settings hda:pio, hdb:pio
ide1: BM-DMA at 0xe808-0xe80f, bios settings hdc:pio, hdd:pio
hda: ST52520A, ATA DISK drive
hdc: Pioneer CD-ROM ATAPI Model DR-A24X 0104, ATAPI CDROM drive
ide0: UNABLE TO GET IRQ -12
ide1: at 0x170-0x177, 0x376 on irq 15
hdc: ATAPI 20x CDROM drive, 128KB cache
Uniform CDROM driver, Revision 2.14
....
Partition check:
Request-module[block-major-3]: Root fs not mountet
VFS: Cannot open root device 03:01
Kernel panic: VFS: Unable to mount root fs on 03:01
</the error>

Yours Sincerely
Thomas S. Iversen
----------------------------------------------------------------------------
--------------------------
Thomas S. Iversen
zensonic@diku.dk
www.diku.dk/students/zensonic
Dept. of Computerscience at the university of Copenhagen, Denmark

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