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Make sure the M drive was not hidden before the reboot.<br />
open regedt32<br />
Navigate in HKEY_LOCAL_MACHINE to<br />
SYSTEM\CurrentControlSet\S<wbr />ervices\EX<wbr />IFS\Parame<wbr />ters<br />
When you have Parameters highlighted, you can double click on &quot;DriveLetter&quot;, remove M from the string, reboot and the M drive will be hidden from view.<br />
<br />
You are NEVER supposed to touch the M drive, so i have admins do this and they can't even see it and won't want to touch it!! (Out of sight out of mind)<br />
<br />
As far as the error message goes, i'm with jpmarten, it's corrupt, either restore from backup, or repair it.
</div>


Make sure the M drive was not hidden before the reboot.
open regedt32
Navigate in HKEY_LOCAL_MACHINE to
SYSTEM\CurrentControlSet\Services\EXIFS\Parameters
When you have Parameters highlighted, you can double click on "DriveLetter", remove M from the string, reboot and the M drive will be hidden from view.

You are NEVER supposed to touch the M drive, so i have admins do this and they can't even see it and won't want to touch it!! (Out of sight out of mind)

As far as the error message goes, i'm with jpmarten, it's corrupt, either restore from backup, or repair it.

<div>
<div class="content wysiwyg-content">
Hi,<br />
<br />
We've been running Exchange 2000 SP2, on a Windows 2000 <br />
SP2 box since August 2001. It's been running well, except <br />
for some SP2 gliches. Yesterday after a reboot it is not <br />
showing the M:Drive. Any ideas as to why, now?<br />
All of the services are running. The hard drive has been <br />
verified. It is still receiving mail, but keeping them in <br />
the Queue. When I try to mount the Mailbox Store I get <br />
<br />
'the database files in this store are corrupted'<br />
ID no: c104173b<br />
Exchange system manager<br />
<br />
Any chance on saving the database? &nbsp;Our back-up says it's complete, but won't restore. <br />
Any help will be greatly appreciated....Thanks<br />
<br />

</div>
</div>


Hi,

We've been running Exchange 2000 SP2, on a Windows 2000 
SP2 box since August 2001. It's been running well, except 
for some SP2 gliches. Yesterday after a reboot it is not 
showing the M:Drive. Any ideas as to why, now?
All of the services are running. The hard drive has been 
verified. It is still receiving mail, but keeping them in 
the Queue. When I try to mount the Mailbox Store I get 

'the database files in this store are corrupted'
ID no: c104173b
Exchange system manager

Any chance on saving the database?  Our back-up says it's complete, but won't restore. 
Any help will be greatly appreciated....Thanks



M:Drive missing

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.