Replacing invalid security id with default security id

Hi there,

I have a Windows 2003 Server and I changed the drive letter of an attached disk
(actually the “disk” is a partition of a Network Storage connected with SAS cable to my server)

After applying the new letter a pop-up message appeared warning me that changing the drive letter may cause the drive to be not accessible and it would also require restart in order  to apply changes.

So, I did the restart and Server did not log me into Windows but he was “Replacing invalid security id with default security id for....”

The procedure took about 2 hours and then the Server logged in successfully.

I have two questions:
1)What is the Replacing Security ID for?
2)My system state is as it was before or not?

Thanks in Advance,
mamelas
mamelasAsked:
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CallandorCommented:
Microsoft's answer: http://msdn.microsoft.com/en-us/library/ms831783.aspx

In other words, nothing to get excited about.
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Windows Server 2003

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