I'm trying to backup one external drive to another. I remember this used to be easier, but it keeps fucking up.
I normally use TeraCopy to copy files, but it seems to fuck up with an error like "Write error: the device is not ready". But the device is soooo ready, I can access it via windows explorer and everything, and there is no 'retry' option or anything like that, I don't know why that happens.
I tried ultracopier but that seems to just drop to 0b/s and doesn't respond to me hitting 'pause' or anything... really weird.
I also tried 'winmerge' which is great for telling me which files haven't been copied - but it uses the default windows copying mechanism, which also fucks up.
I think it's got something to do with USB pooping itself for a split second and everything falls to shit. I'll try a different USB hole.
robocopy could be an option but nothing you mentioned is really "backing up" as such, shadow copy protect is the shit for doing backups because you can boot backups as virtual machines but it does cost. Anyhoo, maybe try robocopy and i'll go back to drinking.