disk lost?

I have an external drive (WD) and have been using it up until just ten minutes ago. I did, however, have problems today that a lot of files could not open. Then I ejected (properly) and opened it again (because of the issue with the files) and now it will not mount at all anymore.

I get the following with fsck_hfs:

jos-elkinks-computer:~ joselkink$ fsck_hfs -d /dev/disk1
** /dev/rdisk1
Using cacheBlockSize=32K cacheTotalBlock=1024 cacheSize=32768K.
Block 2 is not an MDB or Volume Header
Block 976773166 is not an MDB or Volume Header
unknown volume type
primary MDB is at block 0 0x00
alternate MDB is at block 0 0x00
primary VHB is at block 0 0x00
alternate VHB is at block 0 0x00
sector size = 512 0x200
VolumeObject flags = 0x01
total sectors for volume = 976773168 0x3a386030
total sectors for embedded volume = 0 0x00

Does this mean all the information on this drive is lost?? That would be quite a serious loss ...

Message was edited by: Jos Elkink