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I've got an external disk with 6 partitions: 4 for linux, one storage in HFS+, and one storage in ext4. I'd like to delete the ext4 storage one and move it's resulting unallocated space into my HFS+ one, but in GParted, I delete the ext4, and it becomes unallocated. But when I try to resize my HFS+, I can't enter a new value for "New size (MiB)", and the up arrow for it's size is disabled. How can I do this?

My partitions:

/dev/sdb1 ext4 /boot 476.84 MiB
/dev/sdb2 linux-swap 1.86 GiB
/dev/sdb3 ext4 / 9.31 GiB
/dev/sdb4 ext4 /home 46.57 GiB
/dev/sdb5 hfs+ SodiumOxide 523.32 GiB (89.81 used, 433.51 unused)
/dev/sdb6 ext4 WiiMC 14.65 GiB (5.36 used, 9.29 unused)

I'd like to delete sdb6 and add it's resulting unallocated space to sdb5 (SodiumOxide)

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There are multiple reasons on why this would happen. Could you please post you exact partition structure? – darnir Aug 19 '12 at 18:16
@darnir added partition info. – tkbx Aug 19 '12 at 18:24
Which partitions are logical? as there are > 4 – squarebear Aug 19 '12 at 19:15
@shutupsquare With DOS partitions, partitions 1–4 are always primary or extended and partitions ≥5 are always logical. Since there's no extended partition here, I guess this is disk uses the newer GPT format. – Gilles Aug 19 '12 at 22:39
up vote 2 down vote accepted

You can't enlarge it with GParted because it currently does not support HFS+ partition "grow". It only supports HFS+ "shrink". See

Gparted features

or, on your machine:

GParted >> View >> File System Support

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So with this being my only hard drive of size, I'm stuck with the lost space? Could I change it to ext4 or something, increase it, and convert it back? – tkbx Aug 20 '12 at 13:02
Filesystems conversion is generally not possible without data loss, except for filesystems belonging to the same family, e.g. converting ext2 to ext3, ext3 to ext4. I think your best option would be to backup your data on another medium, delete the aforementioned partition and recreate it as per your needs and then restore your data. – don_crissti Aug 20 '12 at 14:26
OK. So I can back it up, delete the HFS+, and make new HFS+ with all unallocated space? – tkbx Aug 20 '12 at 14:38
Yes. Make sure you have hfsprogs installed. – don_crissti Aug 20 '12 at 14:50

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