Re: [Fed-Talk] Looking for encrypted hard drives
Re: [Fed-Talk] Looking for encrypted hard drives
- Subject: Re: [Fed-Talk] Looking for encrypted hard drives
- From: Michael Kluskens <email@hidden>
- Date: Mon, 10 Apr 2006 08:33:50 -0400
On Apr 9, 2006, at 8:05 PM, Amanda Walker wrote:
On Apr 9, 2006, at 5:30 PM, Michael Pike wrote:
What about just an encrypted drive image? If you have a 160 GB
drive, make two 80GB AES128 encrypted images and mount them as
needed? I know old Filevault had problems, but I've used it since
it came out, and even with power outages and everything else,
never lost anything with FileVault as of 10.3.9 on up to 10.4.6.
As I mentioned in my last couple of notes, I'm specifically
interested in something that will keep cache directories (browser
and email caches, in particular) encrypted, which is difficult to
do with an encrypted drive image.
I don't see the problem, make encrypted disk image and replace the
directories with links or aliases to the mounted disk images. When
the disk images are not mounted the links/aliases lead no where.
Unix soft links "ln -s" and OS X aliases work similarly in most
cases; however, if you are going to work at the terminal level you
need to use Unix soft links. Some software may not like one or the
other, I had moved my Music folder to an external drive and used an
alias in my home directory, it worked surprisingly well.
I'm using such a system for some critical files, I only mount the
image (via an alias to the image) when I'm going to work on those
files--it's pretty much a push button system, click on this alias to
mount the image and now this folder is active (via an alias) and both
in the same folder. And I have a Unix soft link in my top level
directory which also leads to the same folder to make everything
similar to my Unix & Linux development environments.
Setup a login applescript to cause the disk images to mount at login
(*of course prompting for the password). Also, use same or
additional disk images for Documents, etc, along with a second disk
image to automatically backup to periodically, you don't have to keep
the backup image mounted all the time.
In addition, encrypted disk images make good backups, for example you
can keep multiple full disk backups of a 35 GB SCSI drive on a 250 GB
firewire drive or internal (I was old-fashioned enough when I ordered
my G4 desktop to request the SCSI internal drive, it's amazing how
much work I can fit on a 35 GB hard drive).
As far as backups go, depending on the type of work you do I have
found that using an incremental backup system like Retrospect can fit
months of work (primarily the Documents folder) on an encrypted DVD-
RW and that's with a thrice daily incremental backup.
Michael
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