External harddrive won't detect on mac after partition work on windows

simon.rasmussen

Commendable
Oct 7, 2018
5
0
1,510
I have a Toshiba 3 Tera external harddrive which I have used without problems on my macbook and iMac. Today I plugged it into a windows machine and used Easeus Partion Manager to delete one of the partitions - thus freeing up about 1 tera of unallocated space. I didn't make any other changes and left the other partition of 2 terabyte (full of data) unchanged.

After having done this and safely ejected the harddrive from the windows machine, my macbook and iMac could no longer detect the 2 terabyte partition. The disk was running and it showed up on mac as an overall drive but it didn't show the partitions on there, and so I was unable to access my data.

Anyone else with similar experience? Any tips on what to try to avoid having to erase the partition and make a completely new partition, thereby saving my data?