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From what I understand, two reasons: Truecrypt doesn't utilize the TPM. Therefore, it requires entry of an additional password before the machine ever even boots. Since BitLocker stores the key in the TPM, users can log on as normal once everything is set up. Secondly, BitLocker apparently allows for storing machine recovery passwords in Active Directory, which seems like it would be a way cool feature. Again, I'm just starting my explorations, so please feel free to correct me if any of this is inaccurate. Thanks, -----Original Message----- From: Peter J Murray [mailto:[log in to unmask]] Sent: Wednesday, December 03, 2008 12:09 PM To: Al Puzzuoli Subject: Re: [MSUNAG] TPM and BitLocker Questions. Why not use Truecrypt? Al Puzzuoli wrote: > I've begun experimenting with BitLocker. I'm trying to enable it on a > Tecra M5, which is several years old. I suspect the TPM on this unit > may be a version that is too old to support BitLocker, but how can I > tell for sure what version this unit has? > > When I enabled BitLocker, the system restarted, asked me to initialize > the TPM, and all appeared to be well. However now, whenever I restart > and try doing the check before actually encrypting the drive, I get an > error indicating that my boot configuration has changed and the check > fails. Has anyone else experienced this, and does it indicate the > presence of a TPM 1.0 or 1.1 as opposed to a 1.2? I would think if > the TPm were too old, BitLocker would be smart enough to just say so > and not proceed any further? > > Thanks, > > Al Puzzuoli > Information Technologist > Resource Center for Persons with Disabilities 517-884-1915 120 > Bessey Hall East Lansing, MI 48824-1033 http://www.rcpd.msu.edu > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature database 3661 (20081203) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > __________ Information from ESET NOD32 Antivirus, version of virus signature database 3661 (20081203) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 3661 (20081203) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com