Windows uses two methods to signal a file is changed... First it sets an "Archive" flag in the item's directory entry and second it keeps a "Last Modified" date in the directory entry. Any change on a file will trigger both to be updated. Mirror checks the Archive flag to know what to copy, then resets it so it won't be copied again until the next change.
It also displays a list of files as it copies them. + means a new file, = means updated file, - means a removed file. Since it is a console program you can re-route it's output to a file, giving you a record of it's activities. I commonly use a command line something like...
Code:
mirror64 -buro \Music\*.* X:\Music >> \archivinglog.txtThe flags are ...
-B batch mode, no confirmations
-U update existing backup
-R recurse into folders
-O remove orphans
A screenshot of the help screen is attached.
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If a file has been affected by disc damage, the file system should give a read error whenever you access that file.
Flac audio files include an MD5 checksum, so the appropriate software could recurse through a disc and verify them all. Or, you could just compare them all with the AccurateRip database (Dbpoweramp's PerfectTUNES can do that), which probably takes longer and must be done on-line.
When moving or archiving files, I'll generate an md5 checksum for each folder using Corz Checksum.
Flac audio files include an MD5 checksum, so the appropriate software could recurse through a disc and verify them all. Or, you could just compare them all with the AccurateRip database (Dbpoweramp's PerfectTUNES can do that), which probably takes longer and must be done on-line.
When moving or archiving files, I'll generate an md5 checksum for each folder using Corz Checksum.
