exFAT drives suddenly changes to MS-DOS - not readable

[Phillipj]

hey all..


I need some help regarding external hard drive, more specific LaCie 2big 12 TB hard drives.

The problem is that we are formatting them to run as ‘exFAT’ but suddenly it stops working and says it is formatted as ‘MS-DOS’. We can’t mount the drive on any mac computer nor windows.
We’ve tried to repair in disk utilities etc. but nothing seems to work.


We’re using the hard drives to movie projects and using ‘Avid’ to cut in.
It is a mac environment and there are a lot of huge files running back and forth.
And we're using raid 0.


I’m open for suggestions and guidance.

Phillip

[Dmitri]

I need some help regarding external hard drive, more specific LaCie 2big 12 TB hard drives.
...
We’ve tried to repair in disk utilities etc. but nothing seems to work.

LaCie 2big is a NAS, not an external hard drive.
Traditional "repairs" like chkdsk in Windows is a rather bad idea, especially for large video files.

What you are looking to do: recover the data or just make the NAS work again?

[Phillipj]

Thanks for correcting!

I don't care about the NAS, I just want to recover my data. Any advice?
Thanks

I need some help regarding external hard drive, more specific LaCie 2big 12 TB hard drives.
...
We’ve tried to repair in disk utilities etc. but nothing seems to work.

LaCie 2big is a NAS, not an external hard drive.
Traditional "repairs" like chkdsk in Windows is a rather bad idea, especially for large video files.

What you are looking to do: recover the data or just make the NAS work again?

[Dmitri]

Since there was exFAT, then Lacie was connected as DAS. A lot of things could have happened with DAS: file system failure during a connection to computer / during a copy / during something else. Or a format: just an accidental one or due to the lost/damaged FS.

Remove the drives out of enclosure, connect them to a PC directly, download RAID recovery software like UFS Explorer and attempt to reassemble the RAID 0 there.
Do not run things like CheckDisk even if Windows will suggest that.

If you won't be able to do that yourself, I'll be happy to help remotely, check your PMs.