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PaulRanger2

macrumors newbie
Original poster
Nov 9, 2015
28
7
I am getting error messages saying "Time Machine couldn't complete the backup to ... This backup needs 495.76.37 GB but only 335.73 GB are available. Select a larger disk or make the backup smaller by excelding files."

I was using a 500 GB external HD as Time Machine backup disk and got the same messages. I bought a larger 1 TB external HD only for the same messages to eventually appear.

I understood that Time Machine overwrote the oldest backups as necessary so that the backup of current data is possible.

Can anyone please advise me how to achieve this overwriting of oldest backups as standard Time Machine practice, please?

Sincerely, PaulRanger2.
 
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