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macos - Mount a HFSPlus disk with read/write permissions in Linux

I realise that this question is similar in nature to this question, but I'm hoping to specifically bring more attention to an additional problem in one of the comments of this answer to that question.


I've taken out the hard drive of an old MacbookPro and I'm trying to mount it on my Elementary OS box, where it automatically mounts it as read-only. I want to gain r-w access to this drive.


Following the procedure as given in the answer linked to above, after running


sudo mount -t hfsplus -o remount,force,rw /dev/sdc2 /media/myharddrive


I get


mount: warning: /media/myharddrive seems to be mounted read-only.


This has been noted by a comment on that question, but hasn't gained enough attention to reward an answer. How come it's still read-only? Isn't that what force ensures?


The following may or may not be relevant:


I also ran sudo fsck.hfsplus -f /dev/sdc2 following the blog post linked to in the answer and added the -f flag after fsck didn't want to perform a check of a journaled system. this ran nicely up until


** /dev/sdc2 ** Checking HFS Plus volume. ** Checking Extents Overflow file. ** Checking Catalog file. ** Checking multi-linked files. Orphaned indirect node iNode28863935 ** Checking Catalog hierarchy. ** Checking Extended Attributes file. ** Checking volume bitmap. ** Checking volume information. ** Repairing volume. ** Rechecking volume. ** Checking HFS Plus volume. ** Checking Extents Overflow file. ** Checking Catalog file. ** Checking multi-linked files. ** Checking Catalog hierarchy. ** Checking Extended Attributes file. ** Checking volume bitmap. ** Checking volume information. ** The volume myharddrive was repaired successfully. *** glibc detected *** fsck.hfsplus: munmap_chunk(): invalid pointer: 0x00000000022f9e30 ***


followed by a backtrace and a memory map. The fsck call appears to have had no effect on my drive, neither good nor bad.


Any pointers on how to get read-write access to my drive, without booting OSX, would be greatly appreciated.


EDIT Michael Kjörling's comments and answer solved my fundamental issue of accessing my data. However, the questions in bold above haven't been addressed yet, so I've edited the question to emphasise this issue, leaving the question open for future users.

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