un-corrupt a microsd card?

[Robin Paulson]

for the third time in the past two weeks, my freerunner has corrupted
my microsd card.

is there anyway of recovering it?

i gather from other posts it's a problem with the partition table,
rather than the actual data

i don't really want to reinstall debian, all the software, and copy
across 5GB of music; they're not the quickest of tasks

what software is recommended? and is it best to do on the freerunner,
or elsewhere, in a card reader?

thanks