Date: Sat, 14 May 2011 11:14:24 -0400 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: Michael Reifenberger <mike@reifenberger.com> Cc: freebsd-hackers@freebsd.org, Devin Teske <dteske@vicor.com> Subject: Re: [RELEASE] New Boot-Loader Menu -- version 1.5 Message-ID: <BANLkTimUz28twamVDDt=-TxWfJc%2B2nEpJQ@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.1105140904310.11775@gw.reifenberger.com> References: <00b601cc11d5$5c83f5c0$158be140$@vicor.com> <alpine.BSF.2.00.1105140904310.11775@gw.reifenberger.com>
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On Sat, May 14, 2011 at 3:15 AM, Michael Reifenberger <mike@reifenberger.com > wrote: > Hi, > this looks very promising! > > While you are working on the loader front currently, > would it be possible to implement a "Boot kernel.old" > menue item that unloads all current loaded modules and re-loads > everithing from /boot/kernel.old? > > Its difficult to handle manually in the loader (esp. handling the > zpool.cache file ) and I got bitten by this issue recently in a ZFS only > environment. > > Thanks in advance! > > Bye/2 > --- > Michael Reifenberger > Michael@Reifenberger.com > http://www.Reifenberger.com > > Many of the Unix/Linux operating systems are utilizing a Kernel Selection ( let's call it Selection instead of Loader ) menu , such as GRUB or LILO , or , in FreeBSD , when Kernel Selection menu is selected instead of booting directly from boot sector . Actually , a Kernel Selection menu in front of the Boot Loader menu is a more flexible method : First select kernel , then select its booting structure with the above described Boot Loader menu . My opinion is that , they should NOT be COMBINED into one single menu , because , in the same system , even there may be other kernels to be booted . Some operating systems , such as OpenSolaris and Mandriva Linux , after updating the kernel , they are keeping previous kernel in the Kernel Selection menu , under the new kernel name item . Such a system may be employed for the FreeBSD : If a kernel.old is generated , it may be inserted into Kernel Selection menu automatically . If , at present , there is no kernel selection menu but boot sector is used directly , kernel build system may modify that structure also to utilize a Kernel Selection menu . Thank you very much . Mehmet Erol Sanliturk
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