Date: Wed, 21 Jan 2004 18:43:24 +0100 From: Juan Rodriguez Hervella <jfrherve@ing.uc3m.es> To: "Sergey 'DoubleF' Zaharchenko" <doublef@tele-kom.ru> Cc: freebsd-questions@freebsd.org Subject: Re: How to mount a FreeBSD-5.1 partition from FreeBSD-4.9 Message-ID: <200401211843.24789.jfrherve@ing.uc3m.es> In-Reply-To: <20040121192653.572040d0.doublef@tele-kom.ru> References: <200401211326.25459.jfrherve@ing.uc3m.es> <200401211552.25129.jfrherve@ing.uc3m.es> <20040121192653.572040d0.doublef@tele-kom.ru>
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On Wednesday 21 January 2004 17:26, Sergey 'DoubleF' Zaharchenko wrote: > On Wed, 21 Jan 2004 15:52:25 +0100 > > Juan Rodriguez Hervella <jfrherve@ing.uc3m.es> probably wrote: > > On Wednesday 21 January 2004 14:53, Sergey 'DoubleF' Zaharchenko wrote: > > > On Wed, 21 Jan 2004 13:26:25 +0100 > > > > > > Juan Rodriguez Hervella <jfrherve@ing.uc3m.es> probably wrote: > > > > Hello, please send the reply to myself cause Im not > > > > subscribe to the list > > > > > > > > I've got a FreeBSD-5.1 installation in /dev/ad0s3, > > > > but I usually run FreeBSD-4.9 from /dev/ad0s2. > > > > > > 5.x uses UFS2 by default. 4.x does not understand UFS2. In short, you > > > either re-newfs the 5.x partition to be UFS1, or you are short of luck > > > this time. > > > > I can not believe you !, > > > > I guess there is (or there will be) some work-in-progress to have > > UFS2 support on FreeBSD-4.X systems. > > If only by you:(. I'd suggest you make your 5.x partition UFS1 and be > satisfied with that - that's pretty much all you can do. > > > Or are we following "Windows way of life" here ? > > If 5.x couldn't understand 4.x, that would be a bad thing. But forcing > 5.x to be absolutely compatible with 4.x is another bad thing. > > If you were forced to stay that compatible all the time, you wouldn't be > able to do major architectural changes. If everyone thought the same > way, an Athlon or a P4 would be a 80286, only MUCH faster (which it is > for most olden DOS or Windows/16 programs, so your definition of > `Windows way of life' is definitely contrary to mine). > > You don't complain 4.x can't run 5.x binaries, do you?:) But the filesystem is a different thing, imho. For example, if you use FreeBSD-4.X you can mount ext2,ntfs,msdos,cd9660,smbfs..... if you use Linux, you can mount ufs..... what's the reason it is not possible to make a program which understands the UFS2 filesystem under FreeBSD-4.X ? Is there any tecnical barrier ? Even if the filesystem was mounted "read-only" (like ntfs), that would fit me.... Besides, is there any way to make my UFS2 filesystem go back to UFS1 without losing the data ? Thanks. I
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