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bug#33639: ISO installer image is broken on i686

From: Thomas Schmitt
Subject: bug#33639: ISO installer image is broken on i686
Date: Mon, 15 Apr 2019 10:35:11 +0200


it seems to help if you explicitely set the timestamps of the "/" directory

  export SOURCE_DATE_EPOCH=1555311212

  xorriso -outdev test.iso -map x /x \
          -alter_date b-c 1970010100000000 / -- \
          -alter_date c 1970010100000000 / --

ISOs made with these xorriso commands match perfectly.

A bit more elegant than 1970 would be to use the seconds value from
SOURCE_DATE_EPOCH (prefix "=" announces date +%s format):

          -alter_date b-c =$SOURCE_DATE_EPOCH / -- \
          -alter_date c   =$SOURCE_DATE_EPOCH / --

The -alter_date commands should be performed after all -map commands,
just to make sure that the timestamps do not get changed again.

I still need to find out where the current time sneaks in.
But this workaround should not do harm after the bug was corrected.

Have a nice day :)


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