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| From | Jolly Roger <jollyroger@pobox.com> |
|---|---|
| Newsgroups | comp.sys.mac.apps, comp.sys.mac.hardware.storage, comp.sys.mac.system |
| Subject | Re: Encrypt existing Time Machine backups? |
| Date | 2015-10-12 22:27 +0000 |
| Organization | People for the Ethical Treatment of Pirates |
| Message-ID | <d82qffF6lacU5@mid.individual.net> (permalink) |
| References | (9 earlier) <mvesrs$7l4$1@dont-email.me> <6Kmdne4aRMfDM4bLnZ2dnUU7-d-dnZ2d@giganews.com> <RcKdnd_Z4twJJobLnZ2dnUU7-VGdnZ2d@giganews.com> <mvh4a3$i0g$1@dont-email.me> <mdadnRDob63QtYHLnZ2dnUU7-RmdnZ2d@giganews.com> |
Cross-posted to 3 groups.
On 2015-10-12, Alan Browne <alan.browne@freelunchvideotron.ca> wrote: > On 2015-10-12 16:15, John Somerset wrote: >> On 10/12/15 9:54 AM, Alan Browne wrote: >>> On 2015-10-12 08:58, Alan Browne wrote: >>>> On 2015-10-11 19:56, John Somerset wrote: >> >>>>> Oh, I thought that encrypting a disk, as with Filevault, meant the >>>>> whole >>>>> disk had to be unencrypted to work. If memory can grab only what it >>>>> needs, that sounds much faster. >>> >>> Doh. I really misread what you wrote when I replied with the stuff >>> below. >>> >>> But yes, the drive remains encrypted and the data from the FileVaulted >>> drive is decrypted in memory on your Mac as needed, file by file (or >>> probably block by block) >>> >> Am I correct that if I encrypted a folder, I couldn't get at any file >> without decrypting the whole folder? > > As I understand it no. When you access the folder using the password it > decrypts what you're "reading" for display or use but doesn't write an > unencrypted version of the folder or files to disk. > > JR or others can correct or clarify. If we are talking about encrypted disk images, then I believe the decryption happens in memory as needed to access the file system on the mounted virtual volume. >> Correct or not, that was my concept of it. That's why I assumed >> Filevault needed to decrypt a disk to get access to any of it. It >> sounded time-consuming, with disaster always lurking. > > Nope. I've been using it for many years (previous version and current > File Vault 2 version) w/o issue. Naturally my system (Filevault2) disk > is also backed up very regularly with Time Machine and other static > backups as warranted for things I want in read-only completely offline > backup (DVD's). FileVault 1, the previous version which placed the user's home folder contents into an encrypted disk image, was much more problematic and way less secure. -- E-mail sent to this address may be devoured by my ravenous SPAM filter. I often ignore posts from Google. Use a real news client instead. JR
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Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 12:37 -0500
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-11 17:45 +0000
Re: Encrypt existing Time Machine backups? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-11 13:57 -0400
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 13:05 -0500
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-11 18:07 +0000
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 13:11 -0500
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-11 18:17 +0000
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 14:07 -0500
Re: Encrypt existing Time Machine backups? nmassello@yahoo.com (Neill Massello) - 2015-10-11 15:16 -0600
Re: Encrypt existing Time Machine backups? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-11 17:37 -0400
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 17:48 -0500
Re: Encrypt existing Time Machine backups? nospam <nospam@nospam.invalid> - 2015-10-11 18:53 -0400
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 17:58 -0500
Re: Encrypt existing Time Machine backups? nmassello@yahoo.com (Neill Massello) - 2015-10-12 00:38 -0600
Re: Encrypt existing Time Machine backups? nospam <nospam@nospam.invalid> - 2015-10-12 12:01 -0400
Re: Encrypt existing Time Machine backups? nmassello@yahoo.com (Neill Massello) - 2015-10-12 00:38 -0600
Re: Encrypt existing Time Machine backups? nospam <nospam@nospam.invalid> - 2015-10-12 12:01 -0400
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-11 17:52 -0500
Re: Encrypt existing Time Machine backups? John Somerset <somerset@nospam.com> - 2015-10-11 19:56 -0400
Re: Encrypt existing Time Machine backups? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-12 08:58 -0400
Re: Encrypt existing Time Machine backups? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-12 09:54 -0400
Re: Encrypt existing Time Machine backups? John Somerset <somerset@nospam.com> - 2015-10-12 16:15 -0400
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-12 21:32 +0000
Re: Encrypt existing Time Machine backups? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-12 17:39 -0400
Re: Encrypt existing Time Machine backups? Alan Browne <alan.browne@freelunchvideotron.ca> - 2015-10-12 17:38 -0400
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-12 22:27 +0000
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-12 02:31 +0000
Re: Encrypt existing Time Machine backups? ANTant@zimage.com (Ant) - 2015-10-13 01:58 -0500
Re: Encrypt existing Time Machine backups? Jolly Roger <jollyroger@pobox.com> - 2015-10-13 07:09 +0000
Re: Encrypt existing Time Machine backups? Lewis <g.kreme@gmail.com.dontsendmecopies> - 2015-10-12 03:04 +0000
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