This morning I had a
Kindle FAT Input/Ouput Error
seemingly caused by Calibre not cleanly unmounting my kindle?
(not the latest version just some old random one I had)
All my books said "This title has been deleted". And trying to access via FAT gave a "INPUT/OUTPUT error"
So I mounted it in the PC via USB.
me@dev ~ $ sudo dosfsck -w -r -l -a -v -t /dev/sdc1
Checking for bad clusters.
Reclaiming unconnected clusters.
Checking free cluster summary.
Free cluster summary wrong (10268 vs. really 10273)
/dev/sdc1: 16046 files, 405170/415443 clusters