====== How to install a root file system to a Hard Disk ======


===== Getting started =====
First I want to let you know that you must have serial port installed to your DSM-G600! Also I want to let you know that getting a regular (Gentoo or Debian) linux work on DSM-G600 can be extremely hard and It is recommended that you have very good knowledge about how Gentoo and Debian really work (boot process, initrd, inittab, services, runlevels).

===== Basic steps =====

  - [[howto:serial_connector|Install a serial console]] or look up [[howto:loader_o|loader.o method]] for kernel loading.
  - Install [[howto:chroot_gentoo|Gentoo chroot]] or a [[howto:chroot_debian|Debian chroot]] into sda3 root.
  - Get [[http://download2.polytechnic.edu.na/pub4/sourceforge/o/project/project/of/officialdlinkfirmware/DSM-G600_reB/ppclinux.tar.gz|Kernel source]].
  - Apply a kernel patch. After that your kernel is going to ignore U-Boot bootargs and you will be able to set a CONFIG_CMDLINE parameter.<code patch>--- arch/ppc/kernel/setup.c.orig        2005-04-11 05:50:07.000000000 +0300
+++ arch/ppc/kernel/setup.c     2007-02-17 16:06:16.000000000 +0200
@@ -607,8 +611,8 @@
        init_mm.brk = (unsigned long) klimit;

        /* Save unparsed command line copy for /proc/cmdline */
-       strcpy(saved_command_line, cmd_line);
-       *cmdline_p = cmd_line;
+       strcpy(saved_command_line, CONFIG_CMDLINE);
+       *cmdline_p = CONFIG_CMDLINE;

        /* set up the bootmem stuff with available memory */
        do_init_bootmem();</code>
  - Additional kernel .config entries you might want to add/change.<code>CONFIG_CMDLINE_BOOL=y
CONFIG_CMDLINE="root=/dev/sda3 console=ttyS0,9600"
CONFIG_DEVFS_FS=y
CONFIG_UNIX=y
CONFIG_FILTER=y
CONFIG_UNIX98_PTYS=y
CONFIG_DEVPTS_FS=y
# CONFIG_NTFS_FS is not set
# CONFIG_NTFS_RW is not set
# CONFIG_TULIP is not set</code>If you want to also enable reiserfs then you need to disable NFS for example to get more space. Remember that maximum U-Boot formated kernel size is 936KB!
  - [[howto:kernel_build|Guide for compiling kernel]].
  - [[howto:kernel_upload|Guide for uploading new kernel]] or loading it with [[howto:loader_o|loader.o]].

===== Ramdisk tips =====
By default you don't need to do nothing with ramdisk. Ramdisk will be loaded into memory as usual.
To go around this problem you can boot with ''bootm FFF10000'' U-Boot parameter which will only load a kernel image. Also it may be convenient to [[howto:kernel_upload|replace]] the RAMDisk image at 0xFFC20000 by an empty U-Boot image, like [[http://www.netbsd.org/ports/sandpoint/dummy.img.gz|this]] one (do not forget to uncompress it with gunzip(1)).

===== Links =====

[[http://dns323.kood.org/forum/p1549-Yesterday-082958.html#p1549|Forum thread]]\\
[[http://dns323.kood.org/forum/p1583-Today-203135.html#p1583|loader.o method without flashing]]