Software For Mac To Read Fat 32 Disk On High Sierra
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I have a Western Digital MyBook (25EE) 8TB External Drive. It is formatted with exFAT. I can't recall exactly how it was formatted, but I believe it was done with Synology's DiskStation for my Synology NAS. I am able to mount and read the drive when I connect it to the NAS, but not on macOS Sierra 10.12.6. The drive shows up in Disk Utility, but mounting does nothing. I have run 'First Aid' with no errors. Disk Utility incorrectly thinks that the usage is 8/8 TB.
As can be in a screenshot below, usage is around 4.2/8 TB. The drive mainly contains a Synology HyperBackup file (.hbk) which makes up almost single-handedly all of those 4.2 TB. According to Synology DiskStation, the main partition is exFAT and I think the EFI partition is vfat: The drive also shows up in diskutil as disk2s2 but I can't mount it: /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *8.0 TB disk2 1: EFI EFI 209.7 MB disk2s1 2: Microsoft Basic Data WD My Book 8.0 TB disk2s2 $ mount disk2s2 mount: disk2s2: unknown special file or file system.
Download the latest High Sierra Install Assistant from Mac App Store. Choose the macOS High Sierra installer as your startup disk. Ensure your external drive from step 3 is plugged into your Mac. Diskutil unmount force /Volumes/APFS_Fusion_Volume.
$ diskutil mountDisk disk2 One or more volume(s) failed to mount NB: (I tried following for FUSE for macOS, but I suppose they're not really relevant since exFAT should be supported natively in macOS these days.) I don't have the faintest idea where to start on this issue – what could be the problem here? Edit 1: Block Sizes macOS: $ diskutil info disk2 grep 'Block Size' Device Block Size: 512 Bytes $ diskutil info disk2s1 grep 'Block Size' Device Block Size: 512 Bytes $ diskutil info disk2s2 grep 'Block Size' Device Block Size: 512 Bytes Synology SSH: Used fdisk -l. Notice the GPT PMBR size mismatch – maybe it has some relevance? GPT PMBR size mismatch (!= ) will be corrected by w(rite). ExFAT (Extended File Allocation Table) file system is the successor to the great old FAT32 file system. It has many pros and cons.
One of the pros, for instance, is file size limit's now up to 16 Exabytes. It's not used and was not designed for formatting hard drives. It is only recommended for flash memory storage.
That's the only reason it is currently not considered as huge competitor to NTFS on hard drives. Also exFAT contributes to the emergence of permission problems and corrupted files. Suppose your situation is related to this issue. I would try to reformat it although you've got 8TB to transfer.
Hi, I have a 10TB G-Drive USB (not USB-C) harddisk and I have formatted it to ExFAT via a Window 7 PC. It works fine with the PC. I later on bought a new mac book pro with touch bar with macOS High Sierra 10.13.3, and found out that the G-drive is not mountable by the mac book. I can find the hark disk in disk utility with the correct name but the harddisk name is greyed and do not allow me to mount it.
First-aid was done and it was fine. The hard disk is not corrupted as I can still use it with PC. If it helps, I am using an adaptor to convert the usb 3.0 cable to usb-C for the macbook. I would like to know how to solve the issue as I need the harddisk to be used in both PC and Mac, so I need it to be ExFAT. Thank you very much! Thank you, I did what you said but i still cannot mount my drive. ** Checking active bitmap.
Checking bitmap cluster 2 Read offset = 0x00 length = 0x400000 0 clusters were marked used, but not referenced 0 clusters were marked used and CLUST_BAD 0 clusters were marked free, but referenced ** Rechecking main boot region. ** Rechecking alternate boot region. ** The volume AK Library appears to be OK. Both Windows and Mac OS said no problem found from the disk. When I tried to mount it, mount: disk2s2: unknown special file or file system. This is what i get when util list /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *10.0 TB disk2 1: Microsoft Reserved 134.2 MB disk2s1 2: Microsoft Basic Data AK Library 10.0 TB disk2s2. I had this same issueand tried a lot of the prescriptions out there: manually mounting the drive through terminal, repairing the drive through Disk Utility, etcbut was never able to get my drive to mount on a mac.