On May 27, 2011, at 11:21 AM, Chris Rees wrote: > On 27 May 2011 17:47, <rank1see...@gmail.com> wrote: >> >> ----- Original Message ----- >> From: Alexander Best <arun...@freebsd.org> >> To: rank1see...@gmail.com >> Cc: hack...@freebsd.org >> Date: Fri, 27 May 2011 13:47:54 +0000 >> Subject: Re: Active slice, only for a next boot >> >>> On Fri May 27 11, rank1see...@gmail.com wrote: >>>> Idea is ... >>>> I have i.e; 3 slices, of which first is active. >>>> Now I wana set slice 2 active, but only for a one/next boot. >>>> Once slice 2 is booted and system is shutdown or rebooted, once again, >> first slice is active and booted, without user's intervention. >>>> >>>> Is this possible or should be implemented? >>> >>> take a look at the gpart(8) manual, expecially the ATTRIBUTES section. > if >> you >>> are running with a GPT scheme you can use the "bootonce" attribute to do >>> exactly what you asked for. >>> >>> cheers. >>> alex >>> >> >> Thanls, but I need it for MBR. >> >> Domagoj S. > > MBR has only a one-bit wide field for active status. You'll need logic in > the first boot to change the flag, perhaps an fdisk statement.
I should have said You can create scripts that keeps state in /, or unconditionally switches back. gpart works with mbr partitions, but it would have to be cooperative with the thing booted... Warner_______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
