Microsoft Ramdisk Share

NTFSD
1

Hello everyone,

I have four machines I am developing on:

Machine 1 - XP Pro
Machine 2 - XP Pro
Machine 3 - XP Pro
Machine 4 - 2003

I installed microsoft’s kmdf ramdisk sample on each of these machines and tried to share the drive. On all machines, the drive successfully shared, but user access was restricted in the following ways:

Machine 1 - I could access the share.
Machine 2 - No one could access the share
Machine 3 - No one could access the share
Machine 4 - No one could access the share

On machine 1, I could access the ramdisk, but no one else on the domain could, despite giving EVERYONE full access to the drive and also adding individual domain users to the drive. On the other machines though, not even I could access the share.

This brings on two questions:

  1. Why can I access the share on machine 1, but no other machine?

  2. How come no one else on the domain can access any shared ramdisk?

I should also mention that I have windows firewall turned off on all machines, I have tried every possible combination of security (i.e. added EVERYONE for full control, added individual domain users, etc.) and I have reset the security policies back to the windows default. Also, I am able to successfully share and access any other drive/folder on any of the machines, just the ramdisk is giving me trouble.

Any help would be appreciated.

Bryan

2

You’ve probably already checked this, but do machines 2-4 have any explicit denial entries that might be overriding whatever you granted Everyone? I doubt it, but it’s easy to check, if you haven’t already.

mm

3

Thanks for the reply, and I have checked that.

4

Did you check the event logs on those systems? There might be some error logged there. I came over sharing error just today, and to solve it it was necessary to increase certain value in registry. The error was found in the event log and solution came from MS Knowledgebase. This might be the case for you as well.

5

Thanks for the reply Eugene, and yes, I have checked the event logs. There were no errors reported when performing the share or trying to access it.

Does anybody know what else the problem could be?

I have to imagine people have tested the Microsoft kmdf ramdisk example enough to either run across this problem, or tell me they had no problems performing network sharing.

Any help is appreciated,

Bryan

6

Well you might ask this on NTDEV since the KMDF guys don’t hang out here,
since KMDF can’t be used for file systems which is topic of discussion in
this group.

–
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
Website: http://www.windrvr.com
Blog: http://msmvps.com/blogs/WinDrvr
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wrote in message news:xxxxx@ntfsd…
> Thanks for the reply Eugene, and yes, I have checked the event logs.
> There were no errors reported when performing the share or trying to
> access it.
>
> Does anybody know what else the problem could be?
>
> I have to imagine people have tested the Microsoft kmdf ramdisk example
> enough to either run across this problem, or tell me they had no problems
> performing network sharing.
>
> Any help is appreciated,
>
> Bryan
>

7

Thanks Don, I’ll try that.