On Tuesday 21 August 2018 05:12:03 Nick Koretsky wrote: > On Tue, 21 Aug 2018 09:20:43 +0200 > > "Dr. Nikolaus Klepp" <office@...> wrote: > > > Its tears so far Nik. There are so many differences just in the > > > ext4's used that one of them should be renamed, they will NOT > > > cross mount, ext4 disk to ext4 mount. > > > > Hi Gene! > > > > When you cannot mount the ext4 partions from one another, then there > > is something very wrong. ext4 can be mounted as ext2 and that should > > alway work - at least, if the drives and filesystems are ok. > > No, you are wrong. There were options added to ext4 which made it > incompatible with older kernels. And a few years ago they made this > options default. Debian wheezy kernel (3.2) would not mount ext4 > created in debian stretch. But will it work in reverse by making the /media/dirs on stretch, and mounting the wheezy partitions to them for reading purposes. I faintly recall, on my first install attempt, doing that but could only see the partitions root despite trying to cd up a known path, and when I had rebooted to wheezy, the partitions were marked dirty and had to be e2fsck'd which took about 20 minutes with nothing found. Thats not a very confidence inspiring thing. Since this is a 2 list post, going the emc-developers too since this install media is theirs, my first attempt used the debian 9.4 1st dvd for install media, and networking Just Worked. But lots of other stuff didn't. My 2nd attempt was with the LCNC image of stretch pointed to by the wiki.linuxcnc.org pages, and networking is dead. And my 3rd attempt will use that media again. That big a change in filesystems deserves a migration tool. So I'm going to go fix the missus breakfast, then get to it a 3rd time. -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>