Hello all from Newbie 
I have been running a music computer for a number of years, upgraded a few years ago to 2 HDD's - 1 for the system and 1 for data.
A few days ago I installed a Bluray burner and all was well, however a couple of days ago I tried to boot the PC and it wouldn't. I eventually got it running but the data disc is no longer recognised in any Windows programs. It appears in BIOS and in 'Device Manager' where it says it's working correctly, but in nothing else. In Computer Management it reports the device as 'unreadable.'
I have, using Active File Recovery, as far as I know, copied ALL the data from the hard drive without any issue onto a seperate archive drive so I haven't lost anything apart from a couple of days of frustration. Active File Recovery reports the partition that contains all my data on the drive as being in 'Excellent' condition, and a small partition containing $LogFile, $MFT, $MFTMirr and $Volume as being 'Very Bad.'
A couple of questions: I'm not sure what has happened to the drive, everything has been working fine up until this point. Can somebody possibly explain to me what has caused this to happen? There are no viruses on the PC - it isn't even internet connected - it only runs Cubase and Sony Vegas. Can I do anything with it short term? I can't assign a drive letter to it so ChkDsk won't work, neither can I reformat it...
Secondly - out of interest, I scanned the system drive as well as a laptop I use for my day to day work. Both reported the same situations - data was 'Excellent' and a small partition containing the same files above were reported as being 'Very Bad.' Again, I have had no problems with any of the other drives. Is the software possibly mis-reporting? I don't understand why the above files should go bad any quicker than any other areas on the disc. Again, I have no malware or viruses that I am aware of and regularly scan with decent anti-malware software.
Can anyone help me, or is it a case of a new drive needed? Currently at great expense...
Thanks in advance - John

I have been running a music computer for a number of years, upgraded a few years ago to 2 HDD's - 1 for the system and 1 for data.
A few days ago I installed a Bluray burner and all was well, however a couple of days ago I tried to boot the PC and it wouldn't. I eventually got it running but the data disc is no longer recognised in any Windows programs. It appears in BIOS and in 'Device Manager' where it says it's working correctly, but in nothing else. In Computer Management it reports the device as 'unreadable.'
I have, using Active File Recovery, as far as I know, copied ALL the data from the hard drive without any issue onto a seperate archive drive so I haven't lost anything apart from a couple of days of frustration. Active File Recovery reports the partition that contains all my data on the drive as being in 'Excellent' condition, and a small partition containing $LogFile, $MFT, $MFTMirr and $Volume as being 'Very Bad.'
A couple of questions: I'm not sure what has happened to the drive, everything has been working fine up until this point. Can somebody possibly explain to me what has caused this to happen? There are no viruses on the PC - it isn't even internet connected - it only runs Cubase and Sony Vegas. Can I do anything with it short term? I can't assign a drive letter to it so ChkDsk won't work, neither can I reformat it...
Secondly - out of interest, I scanned the system drive as well as a laptop I use for my day to day work. Both reported the same situations - data was 'Excellent' and a small partition containing the same files above were reported as being 'Very Bad.' Again, I have had no problems with any of the other drives. Is the software possibly mis-reporting? I don't understand why the above files should go bad any quicker than any other areas on the disc. Again, I have no malware or viruses that I am aware of and regularly scan with decent anti-malware software.
Can anyone help me, or is it a case of a new drive needed? Currently at great expense...

Thanks in advance - John