unzipping files
I have a large collection of Kindle MOBI books on a DVD which includes a lot of ZIP files. I am trying to unzip them one by one but it is taking a long time and I am finding that many of the unzipped MOBI files will not be accepted by Calibre (particularly the non-fiction ones!). Is there a way to unzip these multiple files automatically and does anyone know why some of the unzipped MOBI files are not accepted by Calibre please?
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