28 May
2022
28 May
'22
5:39 p.m.
On Thu, May 26, 2022 at 01:41:29PM +0200, Matthias Bruestle wrote:
I have noticed, that 2.11BSD is in all cases where I
looked set
to "fast boot", which AFAIK means no fsck of at least /. I found
nobody talking about this or providing information about how to
change it to "slow boot" with a proper check, which is now normal.
Is there a reason why it is not possible to deactivate fast boot?
Or is it just that nobody bothered to do it?
Interesting. When I played with 2.11BSD a few years ago I found that it
only did a "fast" boot if rebooted with "shutdown -rf". A cold boot
would always drop into single user and allow running fsck manually.
IIRC /boot or even one of the earlier bootstrap stages would check a
certain memory location for certain values, which the kernel(?) would
place there in the reboot syscall. As I wanted to always force a fast
boot, I had this in my simh.ini to force a fast boot:
d 157772 177777
d 157774 002400
d 157776 000000
If you're using a simulator I wouldn't be suprised if it does that
automatically nowadays, of perhaps 2.11BSD was patched a while back to
reverse that behaviour.
I don't remember what these values do, though. And you want to do the
opposite anyway. But perhaps this helps you find out more.
Hans
--
%SYSTEM-F-ANARCHISM, The operating system has been overthrown