Time machine can no longer see USB drive connected to airport extreme

According to what I read, as of March, a year ago March, with update 7.3.1 Time Machine will see the USB hard drive connected to the Airport Extreme. This was working fine. It no longer does. I had the latest airport extreme software and firmware updates. I tried going back to 7.3.1.
Does any one have any idea how to make Time Machine work again when connected to my airport extreme?

bradleydad wrote:
According to what I read, as of March, a year ago March, with update 7.3.1 Time Machine will see the USB hard drive connected to the Airport Extreme. This was working fine. It no longer does. I had the latest airport extreme software and firmware updates. I tried going back to 7.3.1.
Does any one have any idea how to make Time Machine work again when connected to my airport extreme?
what exactly do you mean when you say that TM doesn't see the drive? do you mean you can not choose it as the destination TM drive in TM system preferences? do you see the airport drive mounted in finder? if yes, connect it directly to your mac and repair the disk (not permissions) with disk utility. then move it back to AEBS. see if that helps. if not try the following terminal command
defaults write com.apple.systempreferences TMShowUnsupportedNetworkVolumes 1
it should not be necessary with drives connected to AEBS but it might work.

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