If this error appears when you delete a hardware volume shadow copy that was created with the Volume Shadow Copy Service on a Microsoft Windows Server 2003-based server, this issue occurs because Windows Server 2003 identifies the hardware volume shadow copy in the same way that it identifies a hard disk. Therefore, when you delete a hardware volume shadow copy, Windows Server 2003 generates the same error message that is generated when a hard disk is removed.
As per Microsoft: "You can ignore this event in the system event log if you have deleted a hardware volume shadow copy from your computer". See ME828285
for more details.
From a newsgroup post: "This happened to me on my Windows XP Pro when certain data CDís are inserted into CDRW drive. After lots of time on the phone with Dell tech support and trying a different drive, they could not solve it and chalk it up to some problems with XP itself, perhaps with the atapi subsystem".
From a newsgroup post: "I had this problem with a CD-RW. It turned out to be a loose connection in the power socket".
From a newsgroup post: "The same problem happened to me with my CD-RW. Opening up the computer and disconnecting and reconnecting cables fixed this problem and now I can burn a CD, but when done the CD is unreadable".
From a newsgroup post: "What may be happening is that the CDROM is taking too long to read the disk, or the firmware in the CDROM is causing the CDROM to become uncontrollable when certain CD's are inserted. I have seen this happen on old CDROM drives when the laser malfunctions and the drive's electronics are trying to revive and read the CD. What eventually happens is that Windows checks the drive periodically to check if a disk is inserted. When it does this, the CDROM driver in Windows will only wait for so long, and then check again for the device state. If the drive won't respond, the driver reports to Windows that the CDROM has been removed (it isn't answering back, and won't respond). Replace the drive and I bet that fixes it".
Also from a newsgroup post: "Appears when I cut an external SCSI peripheral, the CD-RW or the CDROM. In this case the internal hdd disappears. Just do not cut, or do a hot detect".
, and MSW2KDB
for more details about this event.