Date: Wed, 6 Jun 2001 12:48:24 +1200 From: "Juha Saarinen" <juha@saarinen.org> To: "'Gregory Bond'" <gnb@itga.com.au>, <freebsd-stable@FreeBSD.ORG> Subject: RE: Strange boot message - "no devsw (majdev=0 bootdev=0xa0400000)" Message-ID: <014b01c0ee22$64248e70$0a01a8c0@den2> In-Reply-To: <200106060043.KAA27323@lightning.itga.com.au>
next in thread | previous in thread | raw e-mail | index | archive | help
:: I also saw this following an upgrade from 4.3-BETA to
:: -STABLE on the weekend.
:: Hardware is an old P100 with ATA disk (pri master) and ATAPI
:: CD-ROM (sec
:: master) on Intel PII controller. No SCSI.
It's from autoconf.c:
/*
* Attempt to find the device from which we were booted.
* If we can do so, and not instructed not to do so,
* set rootdevs[] and rootdevnames[] to correspond to the
* boot device(s).
*
* This code survives in order to allow the system to be
* booted from legacy environments that do not correctly
* populate the kernel environment. There are significant
* restrictions on the bootability of the system in this
* situation; it can only be mounting root from a 'da'
* 'wd' or 'fd' device, and the root filesystem must be ufs.
*/
static void
setroot()
{
int majdev, mindev, unit, slice, part;
dev_t newrootdev, dev;
char partname[2];
char *sname;
if ((bootdev & B_MAGICMASK) != B_DEVMAGIC) {
printf("no B_DEVMAGIC (bootdev=%#lx)\n", bootdev);
return;
}
majdev = B_TYPE(bootdev);
dev = makebdev(majdev, 0);
if (devsw(dev) == NULL) {
printf("no devsw (majdev=%d bootdev=%#lx)\n", majdev,
bootdev);
return;
}
unit = B_UNIT(bootdev);
slice = B_SLICE(bootdev);
if (slice == WHOLE_DISK_SLICE)
slice = COMPATIBILITY_SLICE;
if (slice < 0 || slice >= MAX_SLICES) {
printf("bad slice\n");
return;
}
-- Juha
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?014b01c0ee22$64248e70$0a01a8c0>