Failed hack!


Roger Mawhinney <roger@...>
 

Thanks Alan
Should have picked up on that one. :-(
Roger

|-----Original Message-----
|From: Alan Sewards [mailto:alan.sewards@computer.org]
|Sent: 29 December 2003 19:29
|To: MSG-1@yahoogroups.com
|Subject: Re: [MSG-1] Failed hack!
|
|Roger,
| The delayed Write failure causes bad data to be written to
|all drives on the system, so once it happens you are dead in the water.
|
|Alan
|
|----- Original Message -----
|From: "Roger Mawhinney" <roger@mawhinney.uk.com>
|To: <MSG-1@yahoogroups.com>
|Sent: Monday, December 29, 2003 6:19 PM
|Subject: RE: [MSG-1] Failed hack!
|
|
|> Alan
|> I can't understand why you had to format your D: drive. I
|set my systems
|up
|> with multiple partitions precisely for the reason that I can reload
|Windows
|> and programs on the C: (formatting if necessary), yet
|preserve data and
|> downloads on my other partitions.
|> Regards
|> Roger
|>
|> ... I only finally (I
|> |hope) cleared things up when I replaced the C: drive with
|> |another new one and reformatted the D: drive on another computer.
|> | Happy reception - Alan
|> |
|> |Alan Sewards
|> |email: alan.sewards@computer.org
|> |web site: http://asewards.free.fr
|> |
|> |
|> |
|>
|>
|>
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Alan Sewards <alan.sewards@...>
 

Roger,
The delayed Write failure causes bad data to be written to all drives on
the system, so once it happens you are dead in the water.

Alan

----- Original Message -----
From: "Roger Mawhinney" <roger@mawhinney.uk.com>
To: <MSG-1@yahoogroups.com>
Sent: Monday, December 29, 2003 6:19 PM
Subject: RE: [MSG-1] Failed hack!


Alan
I can't understand why you had to format your D: drive. I set my systems
up
with multiple partitions precisely for the reason that I can reload
Windows
and programs on the C: (formatting if necessary), yet preserve data and
downloads on my other partitions.
Regards
Roger

... I only finally (I
|hope) cleared things up when I replaced the C: drive with
|another new one and reformatted the D: drive on another computer.
| Happy reception - Alan
|
|Alan Sewards
|email: alan.sewards@computer.org
|web site: http://asewards.free.fr
|
|
|



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Roger Mawhinney <roger@...>
 

Alan
I can't understand why you had to format your D: drive. I set my systems up
with multiple partitions precisely for the reason that I can reload Windows
and programs on the C: (formatting if necessary), yet preserve data and
downloads on my other partitions.
Regards
Roger

... I only finally (I
|hope) cleared things up when I replaced the C: drive with
|another new one and reformatted the D: drive on another computer.
| Happy reception - Alan
|
|Alan Sewards
|email: alan.sewards@computer.org
|web site: http://asewards.free.fr
|
|
|


David J Taylor GM8ARV 🏴󠁧󠁢󠁳󠁣󠁴󠁿 🇪🇺
 

The items I changed were DisablePagingExecutive and
LargeSystemCache. Well, what a disaster!

No a good choice, Alan! Sorry to hear about the problem.

See:
http://support.microsoft.com/default.aspx?kbid=323608

"SYMPTOMS
Your computer may stop responding (hang) if you run Windows 2000
with the DisablePagingExecutive setting turned on.

"CAUSE
The problem occurs because memory management does not return the
resident available pages that are used by a driver when the driver
is unloaded from the session space. This causes Windows to act as if
it has no available physical memory.

"STATUS
Microsoft has confirmed that this is a problem in the Microsoft
products that are listed at the beginning of this article. This
problem was first corrected in Microsoft Windows 2000 Service Pack
4."

-----------------------------

If you had installed the Command Console, you may have been able to
change the registry entry by booting to the "Windows Recovery
Console". It's available for Windows 2000 and XP. Might not work
if you have damaged the hard disk structure though.

Better luck next year!
David


Alan Sewards <alan.sewards@...>
 

Hi folks,
Being very interested in what the Windows cache is up to, when I came
across a hack which was supposed to improve the performance of the cache and
I/O I thought I'd try it. It came from a respectable source. (David
recommended the LargeSystemCache one some months ago!) The items I changed
were DisablePagingExecutive and LargeSystemCache. Well, what a disaster! As
soon as I restarted the machine, I got Delayed Write Failure
messages continuously and never succeeded in rebooting. Using the WinXP
CDROM to repair the system did not work as the HD was obviously affected, I
got endless error messages, blue screens of death, the lot. In the end I had
to reformat the C: drive and re-install Windows XP a number of times (seven
in all!) and then reload all the software and configure it again - a real
chore which took up most of Sunday and Monday. I also lost all data on the
d: drive - two months of MSG-1 images! One positive side to
this was that I looked on the web for info on the Delayed Write Failure
phenomenon and there was lots. I found the registry hacks mentioned, but as
well Maxtor drives and ATI graphics cards were blamed. Microsoft even has
Notes on the subject, blaming it on the use of 40 wire cables on the IDE
drives, setting the UDMA too fast, or using write caching on the drives.
You really don't want to catch this problem, it is worse than any virus
as it means a re-install every time you boot up and get the bad messages, as
they mean the disk(s) is trashed. You can only make limited changes each
time, so it means a couple of hours goes with each iteration. I only finally
(I hope) cleared things up when I replaced the C: drive with another new one
and reformatted the D: drive on another computer.
Happy reception - Alan

Alan Sewards
email: alan.sewards@computer.org
web site: http://asewards.free.fr