Longtime windows user giving OSX a go. My idea was to install Windows via BootCamp and have a shared partition that holds my Dropbox folder (to avoid having dropbox take twice the room on my SSD), music and some other media.
It wasn't a breeze to setup (this post helped me allot after my bootcamp disappeared when adding the shared partition in disk utility) but eventually I got it going. Today however after setting up Dropbox on Windows (not sure if coincidental) the shared partition disappeared and is not showing in either OS (I mean in Finder/File Explorer).
The Shared partition is the 250GB one and was formatted as ExFAT.
This is what Disk Utility is showing:
This is the output I am getting from GDisk:
GPT fdisk (gdisk) version 1.0.1
Warning: Devices opened with shared lock will not have their
partition table automatically reloaded!
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Command (? for help): p
Disk /dev/disk0: 977105060 sectors, 465.9 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): E17AF55E-F8EF-4DE3-9767-F7CCC3C37CDC
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 977105026
Partitions will be aligned on 8-sector boundaries
Total free space is 262281 sectors (128.1 MiB)
Number Start (sector) End (sector) Size Code Name
1 40 409639 200.0 MiB EF00 EFI System Partition
2 409640 292336615 139.2 GiB AF05 Untitled
3 292336616 293606151 619.9 MiB AB00 Recovery HD
4 293606152 781438975 232.6 GiB 0700 Windows_NTFS_Untitl...
5 781701120 977104895 93.2 GiB 0700 BOOTCAMP
Best Answer
So after much research I managed to resolve the issue. Looks like ExFAT is susceptible to corruption, but you can actually repair it in terminal. In hindsight it looks like a better solution would have been to format the shared drive as NTFS and use Paragon NTFS to read/write to the share in OSX.
Solution
If you encounter a similar issue with ExFAT under OSX, the steps to solve it are as follows:
Find out your partition identifier in Terminal by running the command
diskutil list
run the following command to repair the disk (replace
disk0s4
with whatever your partition name is according to step 1)sudo fsck_exfat -d disk0s4
The disk will be scanned and repaired (you will be prompted whether you want to repair).
Sources:
exFAT partition got corrupted, but was easily fixed. How did this happen?
Repairing a Corrupted Mac OSX ExFAT Partition
List All Mounted Drives and their Partitions from the Terminal
Access SAME dropbox folder on MacOS and Windows in BOTH Parallels AND BootCamp?