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Article:
  An Unencrypted Look at FileVault
Subject:   Forced Restarts
Date:   2003-12-21 13:30:51
From:   anonymous2
Re: File Vault being senstive to forced restarts


Gakk!!! MacOS X is not that stable. Wish it were true but it ain't so. I would _never_ turn on FileVault due to this problem alone. Sensitive information I encrypt myself. 99.999% of my information does not need encryption and I don't personally like the trend toward having the system handle everything. I like still thinking for myself. :)


-Walter


http://www.bltoner.com -- iron-on heat transfer toners for t-shirts on laser printers

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Showing messages 1 through 3 of 3.

  • Re: Forced Restarts
    2003-12-22 12:18:38  anonymous2 [View]

    HFS+ is a journalled filesystem, so forced restarts are not such a big problem. What does a journalled filesystem do? It essentially ensures that any change made to the filesystem is "atomic", which means that it either entirely completes or does not happen at all. If you force-restart while the disk is in the middle of an operation then the next time the computer starts up it will look at the filesystem's journal and detect that an incomplete operation occurred. It will then undo the incomplete change. (Note that this is how a journalled filesystem *could* work in principle, not how HFS+ actually works AFAIK.)

    In other words, it's much harder to corrupt a journalled filesystem even if you force-restart or lose power.
  • Forced Restarts
    2003-12-22 08:43:06  anonymous2 [View]

    I've been using FileVault since 10.3.1 and have suffered at least half a dozen forced restarts due to the iPod getting funky. My home folder is more than 10GB in size and nothing bad has happened to the encrypted home folder.

    As I side note, I reformatted the iPod and everything is fine as ever.

    David
  • FJ de Kermadec photo Forced Restarts
    2003-12-21 13:36:08  FJ de Kermadec | O'Reilly Blogger [View]

    Hi !

    I am sorry to hear that you are experiencing issues with Mac OS X. Indeed, you should be able to enjoy a rock-solid installation !

    May I suggest that you have a look at the installation instructions I posted on the forums ? Clean-installing Panther and making sure that you do not use any incompatible third-party applications ( be especially careful about disk utilities ) should allow you to unleash the full potential of Mac OS X.

    F.J.