Good day, I have an IBM 325 xSeries Server , windows 2000 server with SP4 , 4 Harddisks, 3 are configured as Raid-5 & one separate Harddisk. it was configured as a domain controller & demoted to member server through dcpromo tool. also it is a file server , Information server (IIS) & FTP server . It was working since 5 years & before 2 years I have demoted the server from Domain controller to regular member server & everything was fine till since last couple of weeks it started restarting almost daily & sometimes hangs & needs manual restart (still can ping but nothing is working also the mouse can move but no response & I should press on the power button to shut down power on once again) . The following event is reported : ======================================== Event Type: Error Event Source: dmboot Event Category: None Event ID: 3 Date: 23/04/2010 Time: 5:03:20 PM User: N/A Computer: SERVER1 Description: dmboot: Failed to start volume Volume1 (C:) For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: 00 00 00 00 03 00 4e 00 ......N. 0008: 00 00 00 00 03 00 50 c0 ......PÀ 0010: 00 00 00 00 00 00 00 00 ........ 0018: 01 00 00 00 00 00 00 00 ........ 0020: 00 00 00 00 00 00 00 00 ........ ====================================== Have tested the Hardware & nothing wrong , also removed the RAM & cleaned it with a rubber but still the same, The weird thing is that it works fine as a file server when running in "Safe mode with networking" - as well no other services can run since it is running in safe mode. have checked the start up items from registry but nothing wrong. & I dont think it is a driver problem!! Anybody has an idea what is wrong with the server & how can this problem be fixed in order to get this server back to normal status. Regards Elias Dayeh

This article may help. System or Boot Disk Listed as Dynamic Unreadable in Disk Management http://support.microsoft.com/default.aspx?scid=kb;en-us;236086 Regards, Dave Patrick .... Microsoft Certified Professional -Microsoft MVP [Windows]