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| 00:27.18 | *** topic/#debianppc is The Debian GNU/Linux PowerPC Port: http://www.debian.org/ports/powerpc/ | Debian CDs are not bootable on OldWorld PowerMacs |
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| 07:58.42 | *** topic/#debianppc is The Debian GNU/Linux PowerPC Port: http://www.debian.org/ports/powerpc/ | Debian CDs are not bootable on OldWorld PowerMacs |
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| 22:09.11 | *** join/#debianppc rdm0 (~Ron@76.178.88.103) |
| 22:10.09 | rdm0 | I have a question about partitions and boot blocks... |
| 22:10.50 | simonlnu | just ask.. |
| 22:11.05 | rdm0 | I have a dual-booting system with two separate Mac OS X partitions, and a final Debian partition. |
| 22:11.31 | rdm0 | I'd like to wipe out the second Mac partition and extend the Debian partition 'backwards'. |
| 22:11.34 | rdm0 | However. |
| 22:12.25 | rdm0 | The Apple New World boot block is in between the second Apple partition and the Debian partition. I'd like to move it, but I'm not sure how to go about doing that. |
| 22:13.30 | rdm0 | Even if I moved it, clearly it would need some values tweeked. |
| 22:13.53 | simonlnu | you can reorder it in mac-fdisk, but it's only a virtual move, it won't affect "physical" location. it'll show up as wherever you moved it to though, in "show partition map" though |
| 22:14.00 | simonlnu | 'tweaked' |
| 22:14.59 | rdm0 | So does that mean it creates a new one in the new location, or is it just a symbolic move? |
| 22:15.40 | simonlnu | latter. but it does acquire a new number, say from sda12 to sda8 (for example) |
| 22:16.35 | rdm0 | I don't see how it survives my extending the debian partition back over the top of it to reclaim the 'freed' second mac partition, then... |
| 22:17.12 | simonlnu | it won't |
| 22:17.38 | simonlnu | what you could do is put it in lvm, and use that instead |
| 22:17.38 | rdm0 | One might imagine I might need such a thing, later on... ^^;; |
| 22:17.51 | simonlnu | or, in addition |
| 22:19.23 | rdm0 | So rather than try to move the boot block, you'd just grab the two partitions around it and lvm them into a single partition instead. |
| 22:19.29 | rdm0 | Possible.... |
| 22:19.35 | rdm0 | But not very elegant. |
| 22:19.37 | simonlnu | so you could, say, put your future /home on the lvm, then mount that. or just move the partitions around in a more concrete way |
| 22:19.47 | simonlnu | no, but less messy ;p |
| 22:19.54 | rdm0 | True... |
| 22:19.55 | simonlnu | (easier, anyway) |
| 22:20.05 | rdm0 | I agree. |
| 22:20.13 | rdm0 | But 'for the purposes of argument'... |
| 22:20.15 | simonlnu | otherwise i'd back up everything and do it from scratch |
| 22:20.48 | rdm0 | Well, installing from scratch for the first partition isn't really an option. |
| 22:21.10 | simonlnu | no, but you could probably dd it somewhere |
| 22:21.11 | rdm0 | So we need a boot block for that one that still works. |
| 22:22.07 | rdm0 | Actually, sadly, I don't have backup disks big enough to hold all the first partition at the current time. I was hoping to avoid messing with the first partition entirely. |
| 22:22.31 | rdm0 | I can fit the Debian partition onto a backup disk, however. |
| 22:23.25 | simonlnu | ok |
| 22:24.06 | rdm0 | But I would need to recreate or 'move' the boot block in between the 'about to become free space' and the following Debian partition in order to combine the two. |
| 22:24.19 | rdm0 | Preferably to the end of the disk, probably. |
| 22:25.10 | simonlnu | the boot partition/block you could dd that also. usually you put it at the start. |
| 22:25.57 | rdm0 | yeah, well, Apple sticks a lot of tiny crap at the front of it's disks, so that is all full right now. Immediately followed by the first Mac OS X partition. |
| 22:26.29 | simonlnu | i know, esp. the other stuff. no idea what they do with the efi stuff now. |
| 22:26.52 | rdm0 | And if I dd'ed the boot block, it would probably be confused about the start of the new Debian partition afterwards. |
| 22:27.54 | rdm0 | And I'm not sure that the disk just happily searches for the boot block, it might have some idea where it is supposed to be. Moving it may or may not be transparent. |
| 22:29.02 | simonlnu | the disk doesn't look for it ;) |
| 22:29.41 | rdm0 | The OS just looks around for a partition labelled boot block? Both Mac OS X and Debian will not mind if it moves? |
| 22:30.31 | simonlnu | the bootloader looks for it. no idea if os x deals with it that way |
| 22:30.49 | rdm0 | Worse, the boot block currently knows about a second bootable Mac OS X that won't be there, as well as have a 'misconception' as to where the start of the Debian partition lives. |
| 22:31.34 | rdm0 | So even if it moves, it needs 'altered'. |
| 22:31.36 | simonlnu | TMK anyway |
| 22:31.55 | simonlnu | the boot block doesn't store that per se |
| 22:32.03 | rdm0 | 'TMK'? |
| 22:34.01 | simonlnu | to my knowledge |
| 22:34.58 | rdm0 | Ah! Sorry for the confusion... |
| 22:42.25 | rdm0 | Another advantage of moving the boot block is so we could increase its size so that grub2 could be used instead of yaboot (eventually), since it seems yaboot is being replaced. |
| 23:09.05 | simonlnu | no idea about that |
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