Getting to FreeBSD-9.0-RELEASE from FreeBSD-10.0-CURRENT

[vask]

Is it possible to downgrade without formating?

Please Advise.

More Info:

Maybe I can boot the FreeBSD-9.0-RELEASE Kernel on the FreeBSD-10.0-CURRENT System and then do:
# freebsd-update
So far I wasn't able to get internet using this method for freebsd-update(8)

I have also tried:

vi ports-supfile
 *default release=cvs tag=RELENG_9_0
 src-all
csup -g -L 2 ports-supfile

cd /usr/src
make buildworld

but failed with compile errors...

In file included from nsparser.c:398:
/usr/src/lib/libc/../../include/stdlib.h: At top level:
/usr/src/lib/libc/../../include/stdlib.h:89: warning: conflicting types for 'free'
/usr/src/lib/libc/net/nsparser.y:169: warning: previous implicit declaration of 'free' was here
*** Error code 1

 

[SirDice]

I have also tried:

vi ports-supfile
 *default release=cvs tag=RELENG_9_0
 src-all
csup -g -L 2 ports-supfile

Why are you using ports-supfile for this? Copy stable-supfile.

 

[vask]

Why are you using ports-supfile for this? Copy stable-supfile.

This was probably my original error when downloading the source and doing:

cd /usr/src
make buildworld
make buildkernel
make installkernel
reboot
make installworld
mergemaster

Just noticed the stable-supfile has:

 *default release=cvs tag=RELENG_9

Instead of:

 *default release=cvs tag=RELENG_9_0

Trying to compile again...

 

[vask]

Compile and install was successful but FreeBSD-9.1-RC1-PRERELEASE or something like that was installed.

freebsd-update failed immediately when invoked from the 9.1-RC1-PRERELEASE kernel.

Since I had a 9.0-RELEASE kernel available still I just did:
cd /boot
mv kernel kernel-9.1-RC1-PRERELEASE
cp -R kernel-9.0 kernel
reboot

Now maybe freebsd-update is happy.

From the 9.0-RELEASE kernel I plan to do freebsd-update when the 9.1-RELEASE comes out.