Am having issues again where i fear i hae just gone and lost another 300gig of data. I have an external that i switch on only when i need it and just a few days ago had to clear some space off my main drive so over to the external it went. I lastnight needed to bring something back off that external and wham! up comes that nasty little message that says 'delayed write failure data could not be saved and may have been lost' or along those lines anyways.

Can anyone shed some light as to why this could be happening to me. I lost the data initially but if i turn the drive off and wait a while and turn it back on its all back there again but the same thing just keeps happening. Of the 3 drives this has happened to me in the last 12 months...the 1st 2 were always on...this one has hardly been on so i cant work out whats going on. Have i really lost all that data?