See in-line below.
Thanks.
I know in older W98 ng, it was never a good idea to install the OS over an
existing OS.
It's not a 100% sure thing but Windows 2000/XP are better able to handle
this than the old legacy Windows 9x operating systems. See here for
more information:
How to perform an in-place upgrade of Windows 2000
http://support.microsoft.com/kb/292175
What an in-place Windows 2000 upgrade changes and what it does not change
http://support.microsoft.com/kb/306952/
Is it better in W2K? As the setup progresses in this situation is there
anything unusual likely to occur?
When you get to these kind of situations with non booting systems it's
hard to say what will "likely occur", anything can happen, that is why
you always make sure that have a proper working backup of your precious
files before you do anything! As I said earlier, your options are not
that many, you can try to replace damaged registry hives, you can try an
in-place upgrade or you can do a whole new install from scratch.
I haven't followed your other discussion threads so I'm not completely
sure of the exact nature of your problems and of the different
suggestions that you have received. I have only done a quick read of
your other posts, from what I can gather you cannot boot because your
System hive is corrupt or missing? Dave has already given you the
preferred usual fix for this problem, replace the missing or damaged
system hive with a backup copy. If replacing the System hive doesn't
fix the problem then you have to move up to the next possible fix.
When the machine was running, I have daily backups using Erndt. Also the
backups you mention above.
Then you should be able to use one of your backups to replace the
damaged hive. You can use the Recovery Console to replace the broken
hive with a backup. If you find the Recovery Console too daunting you
can mount your Windows 2000 hard drive in another Windows 2000/XP
computer and you can move/copy the hives around using the other up and
running operating system. You can mount your disk in a USB enclosure
and access it with another Windows 2000/XP computer. If you don't have
another computer you can use a boot CD disk like this one
http://www.ubcd4win.com/ to boot your computer to a GUI working
environment to do the repairs.
If I install over the existing OS, the backups were in the old
C\Winnt\Erndt folder. Will I still be able to access them?
Yes, your files will still be intact, an in-place upgrade doesn't
replace user files. But, as I said earlier, anything can happen when
you do these kinds of things.
With bad sleep, I forgot that a W2K computer with DVD writer drive creates
data backups that are useless on other W98 computers with just CD drives,
so at this point I really need to get the OS working.
The computer worked solid for 4 years, then seemingly with no cause, a
major issue. As they used to say about regular backups, it's not "if", it's
only "when".
Indeed, you seem to be prepared but many others learn this important
lesson the hard way...
John