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Date:      Thu, 05 Jul 2018 14:30:51 +0000
From:      "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>
To:        "FreeBSD Current" <freebsd-current@freebsd.org>
Subject:   EFI booting from external USB pen drive
Message-ID:  <F2FA85B0-75AB-4F6A-BF79-93D74F00102C@lists.zabbadoz.net>

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Hi,

while I can boot memstick images just fine (which are created using 
makefs/mkimg), doing the same thing using gpart/newfs_msdos -F 12/.. I 
am not able to get anything that boots.

On a Thinkpad (secure boot is off) from the “boot device chooser from 
‘BIOS’” I get a quick blank screen and am back at the chooser.  
I’ve tried the gpart “thinkpad hack” as well as trying an MBR (why 
that should work I don’t know but the memstick one does) and GPT 
options of various kinds.


Anyone successfully done this lately?


/bz



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