This is the show flash on my 837, how can I free up space:
System flash directory:
File Length Name/status
1 6171780 c837-k9o3y6-mz.123-2.XA.bin
2 6141952 sdm.tar [deleted]
[12313860 bytes used, 6908 available, 12320768 total]
12288K bytes of processor board System flash (Read/Write)