Can I upgrade 9.1 straight to 10.2?

[Jack L.]

On Wed, Jan 27, 2016 at 4:58 PM, Erich Dollansky
<erichsfreebsdlist at alogt.com> wrote:
> Hi,
>
> On Wed, 27 Jan 2016 16:23:16 -0800
> "Jack L." <xxjack12xx at gmail.com> wrote:
>
>> On Wed, Jan 27, 2016 at 3:45 PM, Erich Dollansky
>> <erichsfreebsdlist at alogt.com> wrote:
>> >
>> > On Wed, 27 Jan 2016 17:23:18 +0200
>> > Ross <basarevych at gmail.com> wrote:
>> >
>> >> I have a server with an old installation of FreeBSD 9.1-STABLE.
>> >> Can I just download 10.2 sources and do installworld and
>> >> installkernel there?
>> >>
>> >> Or should I install all the releases in between one by one?
>> >
>> > it is very simple. Make a backup, make a snapshot, download the
>> > latest sources. Just be careful with mergemaster. I would do it by
>> > hand.
>> >
>> > If you can't compile the latest sources on the old machine, go to
>> > 10.0 first. I do not think that you have to go through all releases
>> > between. 10.0 might be the only obstacle.
>> >
>> > Erich
>>
>> I upgrade remotely all the time and it's worked fine for me every
>> time.
>
> of course, if you do it all the time. His problem might be the new
> compiler in 10. I see his problem randomly when upgrading older
> machines. As my standard procedure is then to go by the xx.0 releases
> until I am there, I never tried to figure out which revision might has
> caused the problem.
>
> Erich

I upgraded my 9.2-STABLE machine to 10.1-STABLE by doing a make
buildworld&&make kernel&&make installworld procedure and didn't run
into any issues.