OSR's ntdev List: writing to PhysicalDriveX

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16 Feb 02 11:20

ntdev member 4653

xxxxxx@mclean.sparta.com

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writing to PhysicalDriveX

I have a requirement to do raw reads and writes to a physical drive at the kernel level. I am opening a handle to the drives using ZwCreateFile by passing in "\DosDevices\PhysicalDriveX" where "X" is "0", "1", etc. I can successfully open and read a drive using this technigue, but my ZwCreateFile call always fails when I attempt to open the drive for writing. The error returned varies between "STATUS_INVALID_PARAMETER", "STATUS_ACCESS_DENIED", and "STATUS_OBJECT_NAME_NOT_FOUND" depending on how I have the parameters set. Has anyone tried this and can provide me with the proper function syntax. Thanks in advance, Craig Denbrook Sparta, Inc. --- You are currently subscribed to ntdev as: $subst('Recip.EmailAddr') To unsubscribe send a blank email to leave-ntdev-$subst('Recip.MemberIDChar')@lists.osr.com

Message 2 of 2

16 Feb 02 13:42

ntdev member 6069

xxxxxx@backmagic.de

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Re: writing to PhysicalDriveX

Craig, you wrote on Saturday, February 16, 2002, 12:19:29: cmsc> I have a requirement to do raw reads and writes to a physical cmsc> drive at the kernel level. I am opening a handle to the drives cmsc> using ZwCreateFile by passing in "\DosDevices\PhysicalDriveX" cmsc> where "X" is "0", "1", etc. I can successfully open and read a cmsc> drive using this technigue, but my ZwCreateFile call always fails cmsc> when I attempt to open the drive for writing. The error returned cmsc> varies between "STATUS_INVALID_PARAMETER", "STATUS_ACCESS_DENIED", cmsc> and "STATUS_OBJECT_NAME_NOT_FOUND" depending on how I have the cmsc> parameters set. Has anyone tried this and can provide me with the cmsc> proper function syntax. Make sure you have the sharing options set to FILE_SHARE_READ|FILE_SHARE_WRITE. Ralf. --- You are currently subscribed to ntdev as: $subst('Recip.EmailAddr') To unsubscribe send a blank email to leave-ntdev-$subst('Recip.MemberIDChar')@lists.osr.com

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