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What happened with this file?

infile = "\\test data.txt";  

outstr = OpenWrite[infile];
instr = OpenRead[infile];
Read[instr, Record];
Close[instr];  

All content of "test data.txt" was lost.

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You should have used OpenAppend. –  Mr.Wizard Mar 22 '13 at 16:52

1 Answer 1

From the help

OpenWrite["file"] open an output stream to a file, wiping out the previous contents of the file

... it's gone, you deleted it :

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1  
+1 for dry humor :^) –  Mr.Wizard Mar 22 '13 at 16:53

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