Re: Running from DMG
Re: Running from DMG
- Subject: Re: Running from DMG
- From: Dirk Stegemann <email@hidden>
- Date: Sun, 11 Feb 2007 18:04:47 +0200
Hello Brad,
Am 11.02.2007 um 17:43 schrieb Brad Peterson:
I think I'm missing something, though: How does this
behavior differentiate a CD from a DMG? Wouldn't they
both fail to unmount in this situation?
You're right, both fail with the same error message.
Best,
Dirk
--- "Dirk Stegemann (Mailing-Lists)"
<email@hidden> wrote:
Hello Brad,
you could use the hdiutil tool to try to unmount the
volume your
running application resides on. The unmount process
itself should
fail, though, but the error differs for different
situations.
E.g. failing to umount a disk image your app is
running from contains
the error code "49153".
Failing to umount a network share will result in "no
such file or
folder".
hdiutil detach /Volumes/TheVolumeYourAppResidesOn/
The exact error message might differ between system
versions,
especially as these error messages posted by hdiutil
are localized
(unfortunately). So you will have to experiment a
bit and parse
hdiutil's output.
Also, the hdiutil man page (<x-man-page://hdiutil>)
states that using
the "/Volumes/yourvolumename/" path to unmount a
disk image does work
for Mac OS X 10.4 systems only – the Mac OS X 10.3
version of hdiutil
expects the device path (e.g. "/dev/disk1s2").
Run "hdiutil attach /path/to/your/diskimage" to see
your mounted disk
image's device path. I do not know the tool(s) used
to get the device
path for a certain mounted volume...
hth
Best regards,
Dirk Stegemann
Am 11.02.2007 um 16:53 schrieb Brad Peterson:
Hi all,
I know there's a way for an app to determine if
it's
running from a mounted removable volume (just get
the
path, see if it's in the NSWorkspace
mountedRemovableMedia list).
However, I'd like to be more specific than that
and
determine whether I'm running from a mounted DMG.
The
DMG could be writable, so the usual checks for,
say, a
CD don't apply here.
Any thoughts?
Thanks!
B
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