unallocated space on 32gb microSDHC card

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I’ve since used the DiskPart utility to clean the card, but it showed the error “access denied see system log”. I surprised myself and found the system log for the error and it shows that the utility could not zero the card out. So the 1.46gb of usable partition disappeared and i’m left with the 28gb of unallocated space. This card is pooched isn’t it? :confounded: