Re: USB "delayed write failed" Anyone knows why ?

On Sat, 27 Apr 2024 17:04:57 +0200, R.Wieser wrote:
> Hello all,
> 
> On a machine runnung XPsp3 :
> 
> A while ago  tried to copy a couple of 1...4 GB files to an USB stick, and 
> it threw the "delayed write failed" error (after a couple of hundred MByte), 
> after which the machine froze and I had to power-cycle it to get it to 
> respond again (not even the task-manager wanted to come up).
> 
> A bit of googeling gave me the answer : unticking "Enable write caching on 
> the disk" - even though that was in a section that was grayed out because 
> its parent, "Optimize for performance", wasn't selected ("Optimize for quick 
> removal" was).
> 
> No, the question is not why I had to untick something in a grayed-out 
> section, don't worry. :-)
> 
> My question is even worse than that :
> 
> Does anyone know (or have a link to an MS article to) why that the "delayed 
> writing" (which I assume was still doing its job) causes such a big problem 
> ?
> 
> And don't worry, its just curiosity.  There is nothing hanging on the 
> answer.
> 
> Regards,
> Rudy Wieser

From MSDN:

ERROR_LOST_WRITEBEHIND_DATA
596

{Delayed Write Failed} Windows was unable to save all the data for the file
%hs. The data has been lost. This error may be caused by a failure of your
computer hardware or network connection. Please try to save this file
elsewhere.

...

My hunch tells me its due to hardware/firmware level I/O handling bug/glitch
or limitation on the storage device side. If the device was plugged to the
front panel port, try plugging it directly to the back panel port without
using any extension cable to avoid any interference.