Event ID - 34

Event Id34
SourceIomega Zip 250
Description The driver detected that the device \Device\Harddisk1\DR4 has its write cache enabled. Data corruption may occur.
Event InformationWhen you are using an Iomega Zip 250 drive to copy files to and from your hard disk, you may receive the above Event ID warning in the System event log.</p> <p>CAUSE :
The Iomega Zip 250 drive does not support requests by the operating system to turn off write caching. Because of this, an Event ID 32 warning is logged in the event log. This warning is by design. Event ID 34s are then incorrectly generated in the event log every time you start your computer, although they are supposed to be Event ID 32s. 
STATUS :
Microsoft has confirmed that this is a problem in the following Microsoft products : WinXP professional, Win XP Home edition, Win 2000 professional.
Reference Links Event ID 32 and 34 Warnings May Be Logged When You Use an Iomega Zip 250 Drive in Windows XP

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