Re: starting sysinstall at boot time
Quoting Manolis Kiagias <[EMAIL PROTECTED]>: Hi Manolis Thank you very much for you quick and accurate answer. I had mounted the mfsroot but I did not notice that init was not present. So now every thins is clear and not magic at all. Best regards, Joel Levee > [EMAIL PROTECTED] wrote: > > Hi, > > > > Something seems magic in freebsd: I am looking for what does start > > sysinstall at boot time when I boot from the installation CD. > > The only thing related to systinstall is the setting of the init_path > variable > > in the loader.rc file but it is in comment thus the loader should finish > > by launchinig init as usual so what does make it launch sysinstall instead? > > > > I also examined /etc/ttys which is used by init but this file is standard > > and I do not find anything that could tell init to start sysinstall instead > > of getty! > > > > As you may guess, my goal is to create an customized installation CD in > > order to install a network appliance wich embedds freebsd. > > > > Sincerily, > > Joel Levee > > > > > > > > This is a tricky one, kind of black magic ;) > > Seriously, it is quite simple: > > You correctly located the init_path variable. This contains the > following (on a 6.3-RELEASE CD I have handy at the moment): > > #init_path="/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init:/stand/sysinstall" > > This is commented out, but the values shown are the built-in defaults. > > Now, if you take a look at the CD filesystem structure, *there is* an > /sbin/init and there is *no* /stand/sysinstall. So, you would assume > that init would run first. > > However, here comes the caveat: > > The root filesystem when you boot your installation media, is *not* the > CD-ROM itself. Look at /boot/loader.conf: > > mfsroot_load="YES" > mfsroot_type="mfs_root" > mfsroot_name="/boot/mfsroot" > > You will find /boot/mfsroot.gz as the file that acts as the root filesystem. > You can actually examine the contents of this if you mount it using > mdconfig (assuming you mounted your install CD on /cdrom): > > cp /cdrom/boot/mfsroot.gz /tmp > cd /tmp > unzip mfsroot.gz (Can probably be mounted compressed(?), did not check) > mdconfig -f mfsroot md0 > mount /dev/md0 /mnt > > Check the contents of /mnt: > > bin boot dev etc mnt sbin stand var > > sbin is a symbolic link to stand. There is no '/stand/init' in , but > '/stand/sysinstall' exists. Therefore, sysinstall executes ;) > ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: starting sysinstall at boot time
Quoting Artis Caune <[EMAIL PROTECTED]>: Hi Artis, Thank you for your quick answer, /sbin/init is actualy replaced by sysinstall because it is not present on the mfsroot thus sysinstall is launched instead of init. Best regards, Joel Levee. > On Tue, Sep 2, 2008 at 12:49 PM, <[EMAIL PROTECTED]> wrote: > > > > Hi, > > > > Something seems magic in freebsd: I am looking for what does start > > sysinstall at boot time when I boot from the installation CD. > > The only thing related to systinstall is the setting of the init_path > variable > > in the loader.rc file but it is in comment thus the loader should finish > > by launchinig init as usual so what does make it launch sysinstall instead? > > I think /sbin/init is replaced with sysinstall. > > > > As you may guess, my goal is to create an customized installation CD in > > order to install a network appliance wich embedds freebsd. > > I also use custom install script, and I replace /etc/rc on mfs image. > > > > > -- > regards, > Artis Caune > > <. CCNA > <| > <' didii FreeBSD > ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: starting sysinstall at boot time
On Tue, Sep 2, 2008 at 12:49 PM, <[EMAIL PROTECTED]> wrote: > > Hi, > > Something seems magic in freebsd: I am looking for what does start > sysinstall at boot time when I boot from the installation CD. > The only thing related to systinstall is the setting of the init_path variable > in the loader.rc file but it is in comment thus the loader should finish > by launchinig init as usual so what does make it launch sysinstall instead? I think /sbin/init is replaced with sysinstall. > As you may guess, my goal is to create an customized installation CD in > order to install a network appliance wich embedds freebsd. I also use custom install script, and I replace /etc/rc on mfs image. -- regards, Artis Caune <. CCNA <| <' didii FreeBSD ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: starting sysinstall at boot time
[EMAIL PROTECTED] wrote: Hi, Something seems magic in freebsd: I am looking for what does start sysinstall at boot time when I boot from the installation CD. The only thing related to systinstall is the setting of the init_path variable in the loader.rc file but it is in comment thus the loader should finish by launchinig init as usual so what does make it launch sysinstall instead? I also examined /etc/ttys which is used by init but this file is standard and I do not find anything that could tell init to start sysinstall instead of getty! As you may guess, my goal is to create an customized installation CD in order to install a network appliance wich embedds freebsd. Sincerily, Joel Levee This is a tricky one, kind of black magic ;) Seriously, it is quite simple: You correctly located the init_path variable. This contains the following (on a 6.3-RELEASE CD I have handy at the moment): #init_path="/sbin/init:/sbin/oinit:/sbin/init.bak:/rescue/init:/stand/sysinstall" This is commented out, but the values shown are the built-in defaults. Now, if you take a look at the CD filesystem structure, *there is* an /sbin/init and there is *no* /stand/sysinstall. So, you would assume that init would run first. However, here comes the caveat: The root filesystem when you boot your installation media, is *not* the CD-ROM itself. Look at /boot/loader.conf: mfsroot_load="YES" mfsroot_type="mfs_root" mfsroot_name="/boot/mfsroot" You will find /boot/mfsroot.gz as the file that acts as the root filesystem. You can actually examine the contents of this if you mount it using mdconfig (assuming you mounted your install CD on /cdrom): cp /cdrom/boot/mfsroot.gz /tmp cd /tmp unzip mfsroot.gz (Can probably be mounted compressed(?), did not check) mdconfig -f mfsroot md0 mount /dev/md0 /mnt Check the contents of /mnt: bin boot dev etc mnt sbin stand var sbin is a symbolic link to stand. There is no '/stand/init' in , but '/stand/sysinstall' exists. Therefore, sysinstall executes ;) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
starting sysinstall at boot time
Hi, Something seems magic in freebsd: I am looking for what does start sysinstall at boot time when I boot from the installation CD. The only thing related to systinstall is the setting of the init_path variable in the loader.rc file but it is in comment thus the loader should finish by launchinig init as usual so what does make it launch sysinstall instead? I also examined /etc/ttys which is used by init but this file is standard and I do not find anything that could tell init to start sysinstall instead of getty! As you may guess, my goal is to create an customized installation CD in order to install a network appliance wich embedds freebsd. Sincerily, Joel Levee ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
