It suddenly and unexpectedly did not Mount after a reboot. I have a 4TB WD My Passport, ExFAT, being used on MacOS 10.14.6 Just wanted to record my experience for those who follow after. macOS requires the EFI volume to be unmounted or it will complain about not properly ejecting disks. The volume that fails to mount is the primary exFAT volume. I/O size (minimum/optimal): 4096 bytes / 4096 bytes Sector size (logical/physical): 512 bytes / 4096 bytes Notice the GPT PMBR size mismatch – maybe it has some relevance? GPT PMBR size mismatch (4294967294 != 2743150591) will be corrected by w(rite).ĭisk /dev/sdq: 7.3 TiB, 8001562869760 bytes, 15628052480 sectors $ diskutil info disk2s2 | grep "Block Size" $ diskutil info disk2s1 | grep "Block Size" MacOS: $ diskutil info disk2 | grep "Block Size" I don't have the faintest idea where to start on this issue – what could be the problem here? NB: (I tried following these instructions for FUSE for macOS, but I suppose they're not really relevant since exFAT should be supported natively in macOS these days.) Mount: disk2s2: unknown special file or file system. The drive also shows up in diskutil as disk2s2 but I can't mount it: /dev/disk2 (external, physical):Ģ: Microsoft Basic Data WD My Book 8.0 TB disk2s2 The drive mainly contains a Synology HyperBackup file (.hbk) which makes up almost single-handedly all of those 4.2 TB.Īccording to Synology DiskStation, the main partition is exFAT and I think the EFI partition is vfat: As can be seen in the screenshot below, usage is around 4.2/8 TB. I have run "First Aid" with no errors.ĭisk Utility incorrectly thinks that the usage is 8/8 TB. The drive shows up in Disk Utility, but mounting does nothing.
I am able to mount and read the drive when I connect it to the NAS, but not on macOS Sierra 10.12.6. I can't recall exactly how it was formatted, but I believe it was done with Synology's DiskStation for my Synology NAS.
#Drive genius for mac sierra full
In a nutshell, if you are looking for a comprehensive collection of tools that can help you keep your Mac clean and working at its full capability, Drive Genius certainly deserves your attention.I have a Western Digital MyBook (25EE) 8TB External Drive. Since Drive Genius comes with a defragmentation tool, the application is able to rearrange your large files on the disk in order to reduce the time to find a certain data and improve your Mac’s overall performance. Optimize your disk usage and reduce the seeking and opening time frames Moreover, you can verify preferences, repair disk permissions, check the drive integrity, erase the drive content and create a HFS+ volume, expand / shrink / create / delete / hide / reveal partitions, duplicate volumes, secure delete data, perform benchmark tests, and so on. You can use Drive Genius to quickly detect large unused files, duplicates, unnecessary localizations, or universal binaries: this way you can start to quickly regain disk space by deleting files that you do not need. Detect disk failures, identify junk files, and repair permission For easy navigation, Drive Genius also provides a small drop down list containing all the available tools.
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Most of the included tools have self explanatory names, but you can also read a small description and usage pointers in the bottom area of the Drive Genius main window. In addition, the Information panel provides extensive details about each connected drive. Within the Drive Genius main window you have the option to access any of the cleaning and optimization tools provided by the app: Defrag, DriveSlim, Repair, Scan to deallocate bad blocks, DrivePulse, Integrity Check, Initialize, Repartition, Duplicate, Shred, Benchtest, or Sector Edit. Regain disk space and improve your Mac’s performance via intuitive tools Drive Genius is a user friendly Mac app designed to help you clean your disk and optimize the usage of the available space. Your Mac’s performance can be slowed down by different factors: large duplicate documents and other types of unnecessary files, disk failures, data fragmentation, and so on. Support Secure Erase with Initialization on APFS drives.
#Drive genius for mac sierra update
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