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Win2k upgrade: If I reformat & reinstall C: what happens to shares on D : ?

Posted on 2004-10-22
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Last Modified: 2010-04-14
I'm about to reformat a DC from w2k to w2003

On this server is an 'external' 2ndary disk 'D:' (NTFS) - this has network shares on it

If I reformat c: and put on the new OS, I'm assuming it will see disk D: ok, but will the shares still be shared? Will the NTFS permissions be ripped out ?

S.S.
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Question by:SpencerSteel
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    1. All shares WOULD be removed.
    2. NTFS permissions MIGHT be affected - depends if the domain has other DCs and you put this system back into the domain.
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    Author Comment

    by:SpencerSteel
    Thanks for clarification ... getting a bit nervous now ... waiting to do this :)

    1. noting shares down now
    2. The domain does have other DCs and will be returning to the domain so it may pick up ... noted down anyhow.

    Thanks for confirmation,

    Have some points.

    I hate evenings like tonight ... *shivers*

    S.S.
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    by:Lee W, MVP
    1. You CAN preserve the share information by exporting the registry key with them - the key you want should be HKLM\System\CurrentControlSet\Services\lanmanserver\shares - test it first by exporting the key, deleting ONE share the normal way, then reimporting the shares (you might need to reboot - or really just restart the Server service).

    2. If your domain has another DC and won't die with a reformat of this server, then once you rejoin this server to the domain, your NTFS permissions will be intact.  If you are rebuilding the domain from the ground up, then the permissions will still be there, but unidentified users and groups will be seen by the OS (you'd see GUIDs instead of descriptive names).  For all purposes, you would lose the NTFS permissions because you can't reincorporate those permissions on a new domain even though they seem to be there (the Globally Unique IDs (GUID) wouldn't match up with any on the system as the system regenerates new ones with every new domain setup
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    by:SpencerSteel
    Thanks for the extra info Lee !

    In my instance, it's not a big deal to recreate a few shares and I shall be keeping the domain in tact (I HOPE!) ... I'll let you all know what happened once it's done.

    Thanks again,

    S.S.
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    by:Lee W, MVP
    Question - Why not just do an upgrade of the system instead of starting fresh (I understand the desire to start fresh - it's not necessarily a bad thing - but wondering your reasoning)

    Also, should you start fresh, DEMOTE this DC using DCPROMO first - you want to keep your Active Directory as clean as possible - failing to demote first and you'd have a phantom DC in your directory until you ran appropriate tools to get rid of it.  Also, make sure this server is not running any operations master services - if so, move them gracefully (DCPROMO MIGHT do this for you, but it would be better to move them manually one at a time).

    Have a read through this:
    http://www.microsoft.com/resources/documentation/WindowsServ/2003/all/techref/en-us/Default.asp?url=/Resources/Documentation/windowsserv/2003/all/techref/en-us/w2k3tr_adops_how.asp

    It's on 2K3, but things are essentially the same in 2K
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    Author Comment

    by:SpencerSteel
    Thanks again Lee,

    Before I go into an explination, I lied to you above about the 'external' disk being called 'D' - it is, in fact, 'G:' - just so you don't get confused when I tell you below :)

    1. The reason is this ... I have a RAID 5 disk on C: ... it was installed a long time ago with NT4.0 and a 2gig partition on C: with the remain being D:  It then got upgrade to w2k without changing the partitions size a few years ago. 'C' is so close to being full it hurts, i'm struggling for 100 meg. Hence I believe the only real way of reorganising C is an new install.

    2. I've done quite a bit of work on the old FISMO stuff - they are all off this machine and I have another CATALOGUE SERVER ... this machine is no longer a CATALOGUE server either. I'm waiting to DC(de)PROMO it. I will then wait for 30 mins and shut down, checking the clients can operate on the domain without this machine. The idea is to then reform C: make a 8 gig partition for the OS and put win2003 on ... then DC promo it again :)

    Sounds feasable ?

    S.S.

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    by:Lee W, MVP
    Sounds good.  Other than likely being old and thus slow, I don't think you should have much of a problem (I used to manage 30 servers and had my share of nightmares, this I wouldn't be worried about)
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    Author Comment

    by:SpencerSteel
    Cool ... it's been quite an adventure learning about the 'proper' way to do this ...

    I've done as much planning as I can. I'm going in for the kill in about 1 hour.

    £20 says I'm sitting here crying at 4:00am.

    Have a good one mate ...

    S.S.
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