It turns out that, unlike Windows, Linux, or FreeBSD, OSX doesn’t really know how to deal with a partition TABLE that says it’s smaller than the physical disk is – so the cloned larger drive boots, and you can get into Disk Utility just fine, and it shows the drive as being 500GB… but when you try to expand the partition to use the new space, you get the error MediaKit reports partition (map) too small. No problem, right? Slap the old drive and the new one into an Ubuntu Linux workstation, dd if=/dev/sdc bs=4M conv=sync,noerror | pv -s 160G | dd of=/dev/sdd bs=4M and, 45 minutes or so later, we’re good to go. She had a 160GB HDD, and wanted to upgrade to a 500GB HDD. Tonight I needed to upgrade a customer’s Macbook.
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