I have a disk recovery under way. I used this command on a Mac:

sudo ddrescue -f -r3 /dev/disk2 /dev/disk1

However, I forgot to put a mapfile name. So, a few questions:

1. Where is the mapfile being written? Can I recover it?

2. Since mapfile is an essential argument to the command, could it be writing the mapfile on /dev/disk1? Aarrgghh!!!

If the latter (and I hope not), could I suggest some more rigorous checking of arguments might be desirable. As it is, I have potentially wasted 15 hours of copying of a disk with lots of read errors. :-(

3. If I need to interrupt a ddrescue run, is it ok to CTRL/C it, then start running it again later, assuming there is actually a mapfile somewhere? (I have tradesmen coming today who may need to turn the power off.)

Thanks

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