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This package failure was due to problems with your installation media, and subsequent squashfs errors encountered reading data from it, eg. look in the logs and you'll see messages like these :- Jan 10 00:10:20 ubuntu kernel: [ 2357.029342] SQUASHFS error: zlib decompression failed, data probably corrupt Jan 10 00:10:20 ubuntu kernel: [ 2357.029346] SQUASHFS error: squashfs_read_data failed to read block 0x20e6ba30 Usually this means an invalid ISO, or a bad write to your install media, usually detected during the ISO validation (prior to write; https://tutorials.ubuntu.com/tutorial/tutorial-how-to-verify-ubuntu#0) or the CasperMD5CheckResult which actually passed in your case. Problems can also occur if using a VM with insufficient RAM supplied. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1910880 Title: Installing Ubuntu, fresh install, mac-mini mid 2011 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1910880/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs