Messages in this thread |  | | From | Markus Biermaier <> | Subject | Re: Can't Mount CF-Card on boot of 2.6.15 Kernel on EPIA - VFS: Cannot open root device | Date | Tue, 13 Jun 2006 23:10:04 +0200 |
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Am 12.06.2006 um 21:09 schrieb Jan Engelhardt:
> Hm. Maybe http://lkml.org/lkml/2005/2/26/92 (updated version for > 2.6.16/.17 below) can help you. > > diff --fast -Ndpru linux-2.6.17-rc6~/block/genhd.c linux-2.6.17-rc6 > +/block/genhd.c > --- linux-2.6.17-rc6~/block/genhd.c 2006-06-06 02:57:02.000000000 > +0200 > +++ linux-2.6.17-rc6+/block/genhd.c 2006-06-08 22:29:16.607058000 > +0200 > @@ -214,6 +214,52 @@ struct gendisk *get_gendisk(dev_t dev, i > return kobj ? to_disk(kobj) : NULL; > } > > +/* > + * printk a full list of all partitions - intended for > + * places where the root filesystem can't be mounted and thus > + * to give the victim some idea of what went wrong > + */ > +void printk_all_partitions(void) >
Am 13.06.2006 um 09:47 schrieb Markus Biermaier:
> to get the function "printk_all_partitions" compiled I simply > commented out "mutex_lock" and "mutex_unlock"... > > So the result before the boot-panic is: > > ... > here are the partitions available: > 2100 500472 hde driver: ide-disk > 2101 500440 hde1 > ... > What does this mean? >
This holds the solution: /* Note, unlike /proc/partitions I'm showing the numbers in hex in the same format as the root= option */ printk("%02x%02x %10llu %s", sgp->major, sgp->first_minor, (unsigned long long)get_capacity(sgp) >> 1, disk_name(sgp, 0, buf));
So my "/tftpboot/pxelinux.cfg/Cxxxxxx" is: ------------------------- [ BEGIN Cxxxxxx ] ------------------------- DEFAULT standard LABEL standard KERNEL vmlinuz # APPEND initrd=initrd ramdisk_size=32768 root=/dev/hde1 udev acpi=off rootdelay=5 APPEND initrd=initrd ramdisk_size=32768 root=2101 udev acpi=off rootdelay=5 ------------------------- [ END Cxxxxxx ] -------------------------
so the right root-string is: "root=2101".
But can anyone tell me how "root=/dev/hde1" translates to "root=2101"???
Thank you very much, Jan.
You brought me the solution.
Thanks Markus
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