On 04/18/2010 12:30 PM, dhk wrote: > On 04/18/2010 10:37 AM, meino.cra...@gmx.de wrote: >> dhk <dhk...@optonline.net> [10-04-18 16:20]: >>> On 04/18/2010 09:58 AM, Grant Edwards wrote: >>>> On 2010-04-18, Lie Ryan <lie.1...@gmail.com> wrote: >>>> >>>>> Yes, you should be able to, installing Gentoo is basically just copying >>>>> a bunch of files to a partition in a harddisk, nothing magical. >>>> >>>> Precisely. >>>> >>>>> However, you will have to be able to compile a compatible kernel from >>>>> your PC. Compatible usually means either your PC have the same >>>>> architecture as your laptop (which means everything should be already >>>>> setup) or you have to cross-compile the kernel. >>>> >>>> Cross compiling the kernel is fairly trivial, but you need a >>>> cross-toolchain. Building one with crosstool-NG isn't too hard, but >>>> its' not trivial either. >>>> >>>>> I've never done kernel cross-compiling, but it's definitely possible, >>>>> you just need to modify modify some of the Makefile manually (search on >>>>> google for a howto). >>>> >>>> You don't actually need to modify the Makefile if you don't want to. >>>> You can do it from the command line: >>>> >>>> make ARCH=targetarch CROSS_COMPILE=/path/to/cross/compiler >>>> >>> >>> I'm about to do the same thing. My current disk is almost full and my >>> /usr partition isn't big enough, most of the time I can get it down to >>> 95% but often goes to 100%. In the next week or two I will move my >>> system to another drive with lvm or at least a different partition >>> configuration. I'll either do a fresh install or a stage4 install. You >>> may want to look into that: a stage4 install. The documentation is at >>> http://en.gentoo-wiki.com/wiki/Custom_Stage4 and it looks pretty good >>> and simple. This may be the way you want to go. >>> >>> dhk >>> >> >> Hi dhk, >> >> ...same reasons here: A two small harddisk, a system, which suffers >> from to less experience as at was initially installed and a person, >> who wants a fresh one in no time, since time cannot be bought in re- >> peatedly bigger amounts as with harddisks :) >> >> Thank you very much in advance for the hint, dhk! >> One question: Is it possible to install a new system while starting >> with an initially empty "world" file, which will be populated then >> while the configuration/installation process? >> >> keep hacking! >> mcc >> >> > > I'm not an expert, but I think it is possible. > > Beware I haven't done this yet, but this is the procedure I'm going to > try in the the next couple of weeks. > > Do the following in a terminal window from your working system. > 1) Plug in the new drive. > 2) Boot your machine as usual to the old Gentoo. > 3) Run fdisk on the new drive to make partitions you want on your new > system (fdisk /dev/sdb). > 4) Make your file systems with mke2fs and mkswap, then run swapon > /dev/sdb?. > 5) Make all the mount points for all your partitions, but instead of > doing it on your new drive do it on your old drive in the /mnt directory > (mkdir -p /mnt/sdb/boot /mnt/sdb/tmp /mnt/sdb/usr /mnt/sdb/var . . .) > and make one extra mount point for your old system bin (mkdir -p > /mnt/sdb/oldsysbin). > 6) Mount the directories on /dev/sdb from /dev/sda (mount -t ext3 > /dev/sdb7 /mnt/sdb/usr). > 7) Mount your old system bin for the tar command. My tar is in /bin and > /bin is on (df -k /bin) /dev/sda3. Run "mount -t ext3 /dev/sda3 > /mnt/oldsys/" to mount the bin directory. > 8) Make the stage4. At the end of the documentation in the link above > there are scripts that seem to work. Make sure you change the > stage4Location in mkstage4.sh to some place with a lot of room. In this > example I'd change it to "stage4Location=/mnt/sdb/usr/" remembering the > trailing slash. Making it could take a few hours. > 9) Now the tricky part. So not to confuse the root partitions (the old > and new) I would do a chroot. Run: chroot /mnt/sdb /bin/bash and export > PS1="(chroot) $PS1" . > 10) Install the stage4. Change to the /usr directory and if all is > correct you should see your stage4 there. Do a df -k also to make sure > everything looks right. Now install the stage4, run: /oldsys/bin/tar > xvjpf stage4-*.tar.bz2 > > When this is done exit chroot and umount everything in /mnt/sdb. Shut > down the machine. If all went well you should now be able to unplug > either drive and boot to the other. I would boot to the old drive first > to make sure that still works as if nothing happened. Then shutdown, > unplug the old drive and plug in the new drive. See if you can boot to > the new drive. This should be a mirror image of the old drive with the > new partition sizes. > > Once again, I haven't tried this yet. Maybe solicit some other > opinions. I don't think it will affect the original system and it > should allow you to work in another terminal while your building the new > drive. > > Does this make sense. Let me know if it works. > > Good luck, > > dhk > > > > >
correction in #7 "mount -t ext3 /dev/sda3 /mnt/oldsys/" should be "mount -t ext3 /dev/sda3 /mnt/oldsysbin/" dhk
