On Sunday, February 5, 2017 9:46:53 AM CET meino.cra...@gmx.de wrote: > J. Roeleveld <jo...@antarean.org> [17-02-05 08:44]: > > On February 5, 2017 6:26:27 AM GMT+01:00, meino.cra...@gmx.de wrote: > > >Hi, > > > > > >since my old Gentoo installation seems to be screwed up (regarding > > >the update process) beyond repair I decided to install a new one > > >instead of waiting for help. > > > > > >I already made space at a certain of my harddisk and installed the > > >stage3 there. > > >Chrooting is one of the first steps to check, whether what I have > > >done so is valid. > > > > > >But before deleting the old root and install the new one at its > > >place I would like to do a atmost identical boot into the new > > >root. > > > > > >As far as I know the kernel only allows to boot into a partition > > >(instead of a directory on a partition containing the root > > >installation) and I am still using devices to boot from instead > > >of GPT. > > > > > >Is there any neat trick to do a real boot into the new root via > > >the normal boot process (grub2) nevertheless ? > > > > > >Cheers > > >Meino > > > > If I understand correctly. The answer is no. (Unless you write some clever > > initramfs) > > > > Afaik, the kernel takes the entire partition and mounts it at '/'. If you > > want it to use a directory (which would then be at '/newinstall') you > > need to get the kernel to chroot into that directory and run init in > > there. > > > > Only option I see is to use an extra disk. Maybe a USB drive and use that. > > > > -- > > Joost > > Hi Joost, > > thanks fpr your posting! :) > > Ok...another USB drive mau lay around here...will see... > Just two quick questions: > > Is this ok, to preserve as much as possible of the > settings/attributes/whatever of the files or do you anything better > and quickier than this: > (cd <sourcedir>/. ; tar cf - . ) | ( cd <targetdir>/. ; tar xvpsf - ) > ?
Don't forget to add the permissions on the source side: tar --xattrs -cvpf . And maybe also add "--xattrs" on the target side. Other options: # rsync (not fully certain about options) # cd <target> ; cp -a <source> . I never did any timing, but logic tells me using the "cp" option is quicker (as it is all on the same system) -- Joost
