It is realy annoying that the newest version of Synolgy DSM (
5.2-5644 Update 1) can’t handle properly
hfs+ hard drive device out of the box. Thanks to the fact that many users had the same problems as me before I found realy quickly handy article which shows how to make easy workaround. The trick is to disable journaling on the drive and then try to remount the device in nas with
ro flag switched off.
So to be able to write to an
HSF+ USB drvie you need first
- disable journaling on the drive
- connect your drive to nas
- remount device with
roflag switched off
Disabling journaling in the drive
To be able to do this you need to plug in your device to the mac (I couldn’t do this from my linux). Then to turn journaling off using
Disk Utility do following:
Disk Utility(located in
- select the disk device to disable journaling on.
Disable Journalingfrom the
For someone this option could not be visible (Mac OS X 10.4 and later) then before clicking on the
File menu press and hold Option key
More you can find here
Remount device with ro flag switched off
First log in as a root to the ds. Then have a look how the drive is mounted
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You can spot that the drive is mounted with the
ro(read only) flag.
Now unmount the drive.
And remount so it is writable using the same info used when it was mounted automatically.
Finally, you can notice that device is no longer mounted as read only.
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To prove this try.
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It is very important to switch off journaling in the drive. When you remount the drive with
ro switched off and haven’t yet disabled the journaling in the drive you won’t be able to write anything to the disk though
mount will print that the drive is mounted as writable.