I was facing the same issue on mac os. (and partition map/filesystem resize) in my virtual machine. Error: -5341: MediaKit reports partition (map) too small. It doesn't lock up, but even after half an hour it is still 'preparing to. When I had the 100G of unallocated space, Disk Utility would report 'MediaKit reports partition (map) too small.' I also tried creating a new partition of both 'unformatted' and 'cleared.' Now when I use Disk Utility, it says 'Preparing to resize,' but doesn't move on.No matter what choice you make, you can install Filmora for Mac(Originally Wondershare Video Editor for Mac). To resize video on Mac’s latest operating system OS X 10.9 Mavericks, you can either change video screen size and format or crop your video. Disk removalSo you may need to resize it and change the screen resolution. For the hardware part I used the ifixit guide, for mid 2011, the steps are the same for 2012 models, but 2014 models have a new internal design. For the physical switch there were several excellent guides with photos, but there were very few instructions about how to grow the HFS+ partitions of the drive, so I had to test and find a solution and this blog post documents my steps in the hope that it can be useful for someone else.Remove the Cowling with one T6 Torx and gently pry it out (steps 6,7). Remove the Fan with the two T6 Torx screws and remove the connector (steps 3-5). The ifixit guide has many good images, in plain text the steps are as follows ((steps X,Y) below refers to the steps in the ifixit guide): In the ifixit guide there were some steps that I could skip, these were steps 13-15, disconnecting the IR sensor and extracting the logic board out of the case (that requires a special Mac Mini Logic Board Removal Tool), I could get the HDD out without these steps.
So I had to start over making a new clone with dd and then went on another venue aiming at using “diskutil mergePartitions” which worked nicely.So the steps taken to clone the disk and grow it to get one single large partition on the 2TB disk were the following: Research shows that there are some alternatives, one is to destroy and rebuild a sufficiently large partition table with the Mac tool GPT and then resize the disk with “ diskutil resizeVolume /dev/disk2s2 R” which fills the partition, I failed this once and ended up erasing the disk, due to a mistake on my side. ” gives the error message “ Error: -5341: MediaKit reports partition (map) too small“. What I ended up using was a linux computer with two SATA connections with the dd and GParted programs, a Mac and a USB HDD case with the diskutil and Disk Utility programs.The core of the problem is that it is difficult to grow a Mac HFS+ partition since the original disk has a size of the partition table that is limited to the original size of the disk so that Mac “ diskutil resizeVolume. To get a second disk in place at that “top position” in the case one needs to extract the Logic board out of the case which gives more space to wiggle a disk into place.Now I come to the difficult part where there were no simple guides, so I had to Google and experiment my way to a solution. Little kellys castle map downloadThen I do a complete disk clone using the dd disk copy command, which is very powerful and should thus be used with care, the command is so powerful that it has earned the name disk destroyer.500107862016 bytes (500 GB, 466 GiB) copied, 7727,8 s, 64,7 MB/sIt took about 2 hours 9 minutes for dd to complete the cloning even though I used SATA connections in a fairly fast computer. The new one is at /dev/sdd/ and it does not have any partitions. The old mac disk sits at /dev/sdb and has three partitions. Identify the disks with the lsblk command.Here I have removed the output for my other disks (sda and sdc), to avoid cluttering up the blog. Resize Mediakit Free Space AtThen I opened GParted that shows the partitions and their names together with the unallocated space. The partitions are: sdd1 – the EFI boot partion, sdd2 – the Macintosh HD (main hard disk), and sdd3 – the Recovery HD. The new disk now has the three original partitions and 1,4 TB free space at the end. The whole process could probably be performed on a Mac. The trick is to create a new large partition and use diskutil mergePartitions. So, I now have a 2 TB HDD (hybrid) in my Mac Mini which gives me some space for the future and the hybrid technology also seems to give me improved performance.Hope this can help some one else that has the same problem of growing a partition on a Mac HDD where the size of the partition table is the limiting factor. I still keep the old HDD as backup in the book shelf just in case something happens. The machine runs fine and I have not noticed any data loss, writing this blog from the machine.
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