01-03-2011, 11:05 PM #1
Disable write-caching on removable drives?
- Member Since
- Jan 03, 2011
I have a MacBook Pro running OS X 10.6.5, and would like to disable write-caching (asynchronous I/O) on removable drives so as to help prevent data corruption, but have so far been unsuccessful. Here's what I have tried so far:
- Looked for an Apple-provided setting in System Preferences -- doesn't seem to be anything there.
- Looked for /etc/fstab to change default mount options. /etc/fstab.hd exists, but contains only a comment telling me the file does nothing and should be ignored.
- Found this section in /etc/autofs.conf:
# Mount options. # A string containing a comma-separated list of mount options # that will be applied, by default, to all mounts done by automountd(8). # The options for a particular mount can override these options. # This controls the same default mount options that the -o option to # automountd(8) controls. AUTOMOUNTD_MNTOPTS=nosuid,nodev
- I tried just manually mounting the drive in Terminal with the following command:
sudo mount -o noasync -t hfs /dev/disk1s3 temp
mount_hfs: -o async: option not supported
I welcome any suggestions. Thanks in advance.
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