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
