If you are not sure it is Linux volume or unsure what partition it is? ( just as
Suijin wrote above ) or what influence that extra HDD have to your current system ?...
You can simply clear up things for yourself by going a little harder way, but more foolproof and safer IMHO ...
First disconnect that (secondary drive ) from system and start up Your PC,
just give it a try without that (secondary) hdd
if U can now boot up normally on current primary HDD without (secondary) HDD present, and everything run properly -
- then there's no issues.. if you kill that secondary HDD (volume) partition, reformat and do whatever you want to
To kill the Linux volumes, i have used Linux LIVE CD (for example Ubuntu 9.04) what have included GParted program
(Sorry i haven't lately used other partitioning tools (Acronis, or similar.. so can't comment that)
If i recall it right ... that gParted prog. built-in into Ubuntu 9.04 was capable even to format volumes to native NTFS
aka prepare the drive for use in windows, (may be this will speed up things a lil'bit with large volumes)
so, anyway before to launch Linux LIVE CD or any partitioning tools from it
! just double check ! what drive you gone wipe ! be extra careful !
Even for extra safety - just (temporary) pull out (primary) HDD and leave connected only that HDD what needs to be wiped!
if you are familiar with Linux, you know what I try to tell,
but if not - then it could be a lil' confusing because Linux does not name its hard drives like windows do .. C: D: E:.. X: "sorry about this side note"
anyway going with this scenario - You do not need primary HDD to be present,
as You booting from live CD (cd/dvd drive as first boot device)
probably that's all
let gParted finish its job, shut down, (re)connect drives back in right order,
start up PC, go to bios, check the boot order, remove Live cd, reboot, log into windows
if still not shown new drive , go to storage manager and crate a partition and choose drive letter ..
ok just for inf - that's my "quad boot" 4 OpSystem on 4 separate (physical) HDD's
http://img.techpowerup.org/100527/capture2_1storage.png
current screen was created when running W7 ult.32bit / just trying to explain
as i have 1 (200gb )drive for Linux and also i cannot see this drive when booted from any of these (3) windows versions thoug i can see(mount) all windows drives when booted from Linux HDD