My Computer fails to display all installed hard drives

[Phil]

I have 4 hard drives, and 1 CD drive in my Pentium 4, Windows 2000, SP4
system. In addition to the 2 on board IDE connections, I have a SIIG Ultra
ATA controller card that supports a 200gb drive.

I have partitioned most of the hard drives into smaller logical drives. I
have C, D, E, F, G, H, I as drive letters on 3 hard drives connected
directly to the motherboard. Drive J is the CD drive. Drive N is a mapped
network drive. Drive letter K is for the 4th 200gb drive connected to the
ATA controller card.

OK, so why is it that when I launch My Computer/Explorer.exe that only
drives C through J, plus N show up in the list of drives but not drive K?
Granted, I can manually type "K:\" and Explorer will dislay the
folders/files on drive K just fine, but why can't Windows detect and display
drive K in the My Computer view?

 

[Airman Thunderbird]

Are your volumes listed in Administrative Tools/Computer Management/Disk
Management?

 

[Bob I]

Has the drive letter been hidden? Unhide it with TweakUI. Look on
Microsoft.com for PowerToys or TweakUI, if it isn't on the system.

 

[Phil]

Are your volumes listed in Administrative Tools/Computer Management/Disk
Management?

Yes. Disk 0 (Basic disk) shows drive K as healthy and active and online.

 

[Phil]

Has the drive letter been hidden? Unhide it with TweakUI.

I used TweakUI, and yes, drive K was "unchecked." I placed a check mark
next to drive K, and hit Apply, but so far, drive K still does not show up
in My Computer.

Perhaps a reboot is in necessary?