[Solved] Drive changed to FAT16 from NTFS

I have a 320 gb WD IDE rack mount drive that I took out and plugged into a USB enclosure, in order to replace the rack mount drive.

Here's the weird part.
The USB enclosure recognized it fine on 2 occasions and then I started getting "Drive not formatted" message. So I took it out and put it back in the rack mount and am getting the same thing. I do have the correct drive letter in "My Computer". Tried it on another computer and same thing. It is showing up as a FAT16 137gb drive. I never re-formatted anything. I know the 137 GB limit is typical for Pre SP1 XP I have SP3 and I still have 2 internal 200 gb drives that show up correctly and are NTFS. So I don't think there is something corrupt with the driver.
Bios settings are correct for LBA, but the drive shows as 137GB in Bios and with HD Tune. In Disk Management it shows no extra partition.

I ran TestDisk and I can't get past the screen that says to enable 48 bit address.

I do not want to format the drive and lose 120 GB of Music.

I have attached HD Tune and CrystalMark info.

Any help would be appreciated

There are ways to convert it without formatting, such as in the following link.

http://technet.microsoft.com/en-u...56984.aspx

By Googling it, you may find better instructions, but the important thing is that it can be done without formatting it.

Thanks Rocky,
I may have to convert it to NTFS and just use the space left, but I still have the reduced drive size issue or are you saying that converting will put me back to 320 GB. I may be screwed with my data lose. I have been searching and I forgot to mention that this was in a Maxtor One Touch 250 GB enclosure. It seems that Maxtor may have married the enclosure to the drive and the use of any other drive clips the drive back to 137 GB. I would have never thought this was something a drive maker would do, but it may be true.
I am still looking for a way to save the data and that may not be possible.
Next is to try hdat2 utility to see if I can unclip it.

Thanks again.

Quote from repitall : Thanks Rocky, I may have to convert it to NTFS and just use the space left, but I still have the reduced drive size issue or are you saying that converting will put me back to 320 GB. I may be screwed with my data lose. I have been searching and I forgot to mention that this was in a Maxtor One Touch 250 GB enclosure. It seems that Maxtor may have married the enclosure to the drive and the use of any other drive clips the drive back to 137 GB. I would have never thought this was something a drive maker would do, but it may be true. I am still looking for a way to save the data and that may not be possible. Next is to try hdat2 utility to see if I can unclip it. Thanks again.

For starters, you could surely copy that music to another location temporarily, to allow you to wipe it and format it into NTFS.
Have you looked in Disk Management to see what it shows?
If it's offering you 137 gigs when it is actually 320, there will be an unused area (raw) showing in Disk Management. (see attachments)

PS: Ooops. I see now that you have already gone to Disk Management.
Well then, there seems to be no other solution but to copy the data to another location and then delete the present partition and make a new one in NTFS.

PPS: I'm trying to remember if I have ever seen anything such as you describe, and I don't think so.
I'm pretty sure that Disk Management always shows its true size whether it's online or not, formatted, raw, whatever.
If yours shows as 137 gigs and it takes up the entire rectangle in Disk Management, then I'm at a loss to say why, but certainly would copy the data elsewhere, even if I have to spread it around to more than one location, just long enough to reformat it into NTFS.
If it still only shows 137 gigs after that, them you'd better call Ghost Busters.

Problem is I can't get access to the drive to copy anything. I tried a recovery utility and get nothing, for all I know the data is in the unallocated space. If I try to open the drive it asks me if I want to format it. I think I have to get the whole volume first. HDAT2 shows there is space to be reclaimed. Pretty confusing program for one of my skill, but does have some tools to re-set the SETMAX or HPA parameters.
I'll fool with it for while longer before I try it.