hi,

i have to reboot the system with this kernel parameters:
"md=0,/dev/hdc1 root=/dev/md0" ...and i don know where to put them.

im setting a software raid 1 with two disks with mdadm
my system is on hda, and i just set array on hdc

now i have problems booting form hdc and add hda to raid array since
hdc in not a first disk

any suggestion?

bye

You put them on the kernel command line in your bootloader (GRUB or LILO). You need to figure out which bootloader you are using, and edit /etc/grub.conf or /etc/lilo.conf as appropriate. In the section for your kernel, you should be able to put:

append="<your options>"

to add the options to the kernel command line. If you're using LILO, you also have to run /sbin/lilo -v before you reboot the system.

im using LILO bootloader:

# LILO configuration file
boot = /dev/md0
raid-extra-boot = mbr
message = /boot/boot_message.txt
prompt
timeout = 1200
change-rules
reset

vga = 771
image = /boot/vmlinuz
root = /dev/md0
label = Linux
read-only

..then i used command: #lilo
and got this output:

Warning: LBA32 addressing assumed
Using BIOS device code 0x81 for RAID boot blocks
Reading boot sector from /dev/md0
Warning: /dev/md0 is not on the first disk
Fatal: map file must be on the boot RAID partition

....my computer is still booting from hda (root=/dev/hda1)

i also tried to put command append="md=0,/dev/hdc1 root=/dev/md0" on lilo prompt but not woorking

Hmmm ... do you have your /etc/raidtab file set up correctly? FYI this pahge has some example config files (you should read the rest of the guide too, if you haven't already).