Topic: Cannot shrink HFS+ partition
I have a 3TB HDD from my Apple Time Capsule, which had a failed power supply.
The HDD is now in an external case.
I've been having problems with HFS+, so I wanted to split the disk and use HFS+/EXT4 (or NTFS) combination.
On the HDD, there were 3 partitions (APConfig, APSwap and APData). The data is on APData (1,2 TB free space)
I tried to shrink this partition with Gparted 0.28.1-1 Live, but somehow that didn't work.
Then I decided to delete the APConfig and APSwap partitions (1GB in size each) and moved the APData partition to the beginning of the disk (apparently none of these steps were a good idea )
I am naturally getting file system errors in both Gparted Live and macOS, but the disk is being recognized, although I still can't resize it. Now I can't even move it anymore (I thought it would be wise to move it back to the right )
I created a 200MB EFI partition, but it's located at the end of the drive, so I guess it's kind of useless.
I know the cleanest way is to just backup the data and reformat the drive (I would need to borrow a 1,5/2TB drive for that), but I was wondering why I wasn't able to shrink the partition in the first place and if there is a way to move the big partition back to the end of the drive.
Thank you for your help!