On Sun, 2006-09-24 at 14:16 +0000, Jack Byers wrote: > > Jack Byers byersj@xxxxxxxxxxx > > How to chroot to oldlinux to run legacy app, with X > > Assume you have a legacy app available in an older linux, > which is dual booted with your new main linux. > > in my case mainlinux is fc5, > oldlinux is rh8, mounted under /corni when booted in fc5 > > Since this is dual boot, i can of course > reboot into the oldlinux to run legacyapp > but that is awkward and inconvient > > Instead chrooting into the oldlinux > allows you to run legacyapp while still booted up in fc5 > > What took me a long time, much googling, to find out > was how to also run X in that chroot > > first do folowing two commands from your mainlinux > [root@bootp byers]# mount --bind /tmp /corni/tmp > [root@bootp byers]# xhost local:localhost > > I do all my work from xterms, > which is probably why that xhost cmd is needed > > I tried various ways to use startx from a console in the chroot > but never succeeded. > > The above 2 cmds are all that is needed for X to be avail > in the chroot > > then do the chroot: > > # /usr/sbin/chroot /corni > # cd home > # cd byers > # su byers > $ /pathtolegacyapp > > works just as it did when rh8 was my mainlinux > > The oldlinux needn't even be bootable. > > I think this will work chrooting from any linux to any other linux, > _except_ > I have been told trouble will occur > if trying to chroot from a 64bit linux to a 32bit linux > I dont yet have 64bit linux but will soon > Any advice when trying chroot 64bit ->32 bit? > > Jack > > Don't forget the .Xauthority cookie. $ cp /home/<your home>/.Xauthority /mnt/FC4/home/<your chroot home> Gilboa
