On Tue, 2009-10-27 at 13:15 +1100, Bill Donoghoe wrote: > > 1. What do I need to do to get Ubuntu to use 4Gb RAM? My current > Jaunty > installation only recognises around 3Gb. Is this just a kernel > upgrade > or ....
If I remember correctly we don't support > 3GB on 32-bit installs anymore - the performance overhead is terrible. AIUI you can however run a 32 bit userspace on a 64-bit kernel - but I've not done this so can't offer advise ;). There /may/ be a kernel flavour that has PAE turned on - check the server flavours. (But again, warning, slow). > 2. How complicated is it to move my "linux setup" from a single > partition to > the lvm partitions on the larger disk. My latest thought is to: > a. update Ubuntu on the hard disk to match the current working > environment > (fix apt-get config files and/or dpkg -l on both and diff them, and > them > update) > b. If I copy /usr and /var from the working environment to the new > environment will that cause problems? (it will save re-installing some > software that isn't managed by apt) > c. copy /home from working environment to new disk (recommended > method? > rsync to new drive connected via USB?) > d. use pgdump / pgrestore to move postgres databases across > e. Backup new disk > f. find out what doesn't work? What have I missed? Sure, or you could: partition the new disk boot into readonly single user mode mount the new partitions somewhere sensible rsync everything to them. reboot -Rob
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