Porteus

1) I want to have hwclock set to UTC and
2) system clock to localtime

I commented local time from porteus.cfg.
Linked time zone to /etc/localtime.

/mnt/sdb1/porteus/changes/etc/hardwareclock is set to UTC
but after boot something changes /etc/hardwareclock to localetime

I also want to disable NTP synchronization.

Hi baloontravel,
how about open terminal and run: ?

Timezone and RTC timescale cheatcodes does not work (Post by Blaze #65030)

I executed commands with linking localetime to zoneinfo/UTC.
Did dump-session to save changes.
All clocks were set to UTC at this point.

But after reboot still hwclock and date shows my local time.

Is there any way to prevent system from changing hwclock?

I used barbaric solution and just replaced ntpdate with empty script.