Trouble with Time Machine

 

In December 2009 I purchased my IMac 27” 3.06Ghz/4GB/1TB/HD

With this I purchased a WD My Book Mac Edition 1TB

All was assembled and ran fine until last week when a message bar appeared 
telling me that Back up could not be completed

 

I have tried to date

Disk Repair and received the following messages

Invalid node structure

Invalid record count

Missing thread record

Bad parent directory

Missing directory record

Incorrect flag for directory

 

The Volume could not be opened after 3 attempts

Error Disk Utility cannot repair this disk

Verify stopped

My book corrupt

Tried repair again

 

I have disconnected the WD several times and started again doing a back up

Each time when I go to Time Machine at the options window the message is 

Next Backup when disk connected

At Select Disk          no disk is shown

 This was the case again at 3.00pm today

However when I switched the WD off and on again the back up appeared and 
acknowledged that the next backup would occur shortly

Surely I should not have to manually activate the backup
What have I missed?

As an aside does Time Machine when working also back up my Windows work as well 
ie MYOB files


Graeme Winters
 

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