On Mon, 2004-03-01 at 15:05, Mich Lanners wrote: > On 1 Mar, this message from Albert Cahalan echoed through cyberspace: > > Besides mac-fdisk and dd, what works for a Mac? > > I believe parted also works, but I haven't used it personally. > > > So far, I've used dd to put raw copies of my > > data onto all three disks. I'd like to have > > more partitions and/or extend the existing > > main ext2 partition. What is safe to use on > > my Mac? I worry that MacOS or yaboot will freak > > out if the disk size changes. > > This is _not_ MS-DOS. There is a place in the partition map that > contains total disk size (maybe repeated in every partition entry, not > sure), but that's it.
So this looks like a bad idea. I'd have to write a tool to update the partition size or hack it with some very careful dd commands. > For instance, what you can do is recreate a new partition map in the > layout that you want, then dd data from old to new. If new partition > matches size of old one, you're done. If new is larger, extend with > apropriate tool. Mac partition tables permit to adjust the size down to > a single block of granularity, which is important when recreating same > size partitions on a larger disk. For the MacOS 9.1 driver partitions... same thing? I can just copy them over to a different-sized disk? > I think I've done the copying for ext2 and hfs partitions, changing the > physical location on disk without any ill effects. OK, so the plan goes like this: 1. create exact-sized partitions for MacOS 2. use the remainder for Linux 3. dd the data, one partition at a time 4. use e2resize or mke2fs+tar for Linux 5. mount it, then edit the fstab on it Then, there's no need to do any yaboot or MacOS magic. I just switch disks and boot. (at which point my old disk is likely to die)
