Second hard drive says write-protected

Question

I've got a new 2008 enterprise terminal server. I've installed all my apps to the 2nd hard drive. Now for no reason, I can't write to the drive and my apps can't either as they all crash as soon as they need to.
I get this exact error when simply trying to create a directory in the root of the drive:
"The disk is write-protected.
Remove the write-protection or use another disk."
I'm logging in as the local admin, domain admin makes no diff. I've also given full permissions to "everyone" with no luck. How the heck can I fix this bugger?

Answer 1

It could be that the ReadOnly flag is on, do the following
on cmd prompt launch "diskpart.exe"
on the diskpart prompt, do the following
LIST DISK 
This will give you a list of all disks in your system
Note down the number of your problem disk, then do the folloiwng
SELECT DISK x 
Where x is the number of your problem disk, then do the following
DETAIL DISK 
This will list all the details of your problem disk
Check if the ReadOnly flag is set to Yes
If the ReadOnly flag is set to Yes, do the follwing
ATTR DISK CLEAR READONLY 
This should clear the flag on the disk, please retry your disk operations
If ths does not solve it, we have another flag on the volume, same command, but now on volume:
LIST VOLUME  
SELECT VOLUME x  
DETAIL VOLUME  
ATTR VOLUME CLEAR READONLY 
HTH,
Edwin.