Date: Wed, 8 Apr 2009 17:53:09 +0100 (BST) From: Christopher Key <chris@chacal.cjkey.org.uk> To: FreeBSD-gnats-submit@FreeBSD.org Subject: misc/133493: 'gpt boot' should mark the slice in the protective mbr as active Message-ID: <200904081653.n38Gr9Il004023@chacal.wzl33> Resent-Message-ID: <200904081700.n38H09ds017030@freefall.freebsd.org>
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>Number: 133493 >Category: misc >Synopsis: 'gpt boot' should mark the slice in the protective mbr as active >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Wed Apr 08 17:00:09 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Christopher Key >Release: FreeBSD 7.1-RELEASE-p3 amd64 >Organization: >Environment: System: FreeBSD chacal.wzl33 7.1-RELEASE-p3 FreeBSD 7.1-RELEASE-p3 #5: Mon Apr 6 23:58:47 BST 2009 root@chacal.wzl33:/usr/obj/usr/src/sys/CHACAL amd64 >Description: GPT partitioned disks have a protective mbr in the first sector of the disk, containing code to boot from the disk on non-EFI systems, along with an entry for a single slice covering the entire disk. Some BIOSes, e.g. Intel DQ965GF, will refuse to attempt to boot from a disk without an active slice. A workaround is to mark the slice as active after installing installing the pmbr, i.e. gpt boot /dev/... fdisk -a /dev/... (set slice 1 as active) It would however be preferable for gpt to do this itself, either by default, or by adding a suitable command line option. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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