unable to mount disk in windows8

[narak_em]

i wonder....there's only one person who's writing abt it n thats me...
the thing is a disk disappeared in my laptop n cant solve even through disk management .....
alltogether i had 4 disks or volumes but a while before i lost my "disk d:" the MOST IMPORTANT DISK for me ...
even in disk management there appears that volume bt with no name n no file system...whenever i right click on it...only the option for delete and help are enabled whereas others are just disabled i mean i cant click there.....
.
so plz help me to regain my disk without losing it....
n one more thing., i can view it in backtrack well n every files are safe till now and actually this problem arised while partitioning my drive for installing backtrack ..
tx in advance.

 

[A Cheese Danish]

In my opinion, if you want Backtrack installed on a partition, you should've installed that first.
I believe you have 1 hard drive, broken in to 4 sections, correct?
It looks like Windows no longer acknowledges the other "drives" as applicable partitions.

My recommendation: backup the data you have access to in Backtrack, kill the partitions and redo them.