19 Apr
2006
19 Apr
'06
10:39 p.m.
On 4/20/06, Jim Beacon <jim at g1jbg.co.uk> wrote:
After rebuilding the machine back into its new box, it
all worked. A little
more investigation shows that I can still read the faulty pack (installed in
the second drive), but that the boot information is either corrupt or gone.
.
.
.
Now for the question: can I restore the boot
information, or will I have to
re-initialise the pack and start again? (not a problem - it was my games
pack with the extended monitor, but I can restore it from a backup, if
needed).
Should be easy enough, but for the life of me, I can't remember the
RT-11 command to write the boot block. I used to do it all the time
with 2.9BSD and dd... the normal distro contained a dir of boot block
source code for various controllers. All you had to do was compile
the assembly into an executable, then dd it to the front of the drive.
If you have a way to mount that pack in a UNIX machine, you could use
dd to transfer the first block from another pack onto it - that should
do the trick. With 100% RT-11, though, there should still be an easy
way to do it (but I haven't really used RT-11 on a daily basis since
1989).
I will take all of the comments of "idiot"
with good grace.......
No need... this sort of thing used to happen back in the day with an
amazing regularity.
-ethan