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Thank you for your quick and clear answer Milan! Tha'ts really
great! :D So, in the case of such a header destruction by an "old" OS, I think it is still possible to restore the header I saved using luksHeaderBackup <device> --header-backup-file <file>doing luksHeaderRestore <device> --header-backup-file <file>Correct? Best regards, Patrick Le 19. 06. 11 16:53, Milan Broz a écrit : On 06/19/2011 03:54 PM, Patrick wrote:The case : I want to encrypt a full USB disk and my question is : is it mandatory to have a partition existing on the device and to luskformat the partition? In other words, is it OK to luksformat the full device, without mentionning any partition? Is it off "standards"?You can use whole device without partition table, there is no problem in Linux. For LUKS it is just block device - it is not important if it is partition or the whole device. There is only one situation, I know about, when using partition is safer. If you have portable disk (or USB flashdrive or whatever) and there is no partition table on it, and you plug such drive to another system (namely older version of Windows) it likes to offer you to "initialize" drive - which can destruct LUKS header there. If there is a partition table, it thinks that drive was already initialized preventing it. (I think it is not problem in recent versions but not sure.) Milan |
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