On Sunday 27 February 2011 18:04:26 Florian Philipp wrote: > Am 27.02.2011 17:02, schrieb Petri Rosenström: > > On Sun, Feb 27, 2011 at 5:01 PM, dhk <dhk...@optonline.net> wrote:
> >> First, the observations. I tried to partition my disk with fdisk the > >> way I wanted. I would recommend you use 'parted -a optimal' or gparted for this purpose (see below). > >> It had the usual Linux partitions and a partition that I > >> was going to use for Window 7. I wanted to make this an LVM2 partition, > >> but that didn't work; I guess that was too ambitious. I am not sure that you can use LVM2 for MSWindows - as far as I know they use Logical Disk Manager which it is not the same with any other sane LVM implementation - come on now, would you expect them to seek compatibility or interoperability?!! http://en.wikipedia.org/wiki/Logical_Disk_Manager > >> Then I just made > >> it an ordinary static HPFS/NTFS partition on /dev/sda5. When installing > >> Windows 7 it wouldn't install on that partition. I deleted all the > >> partitions and just installed it on the first 50Gigs of the disk. > >> > >> Second, the questions. The Windows 7 install on the first 50Gigs of the > >> disk needed to created two partitions. The first was a very small boot > >> partition that I increased to 128Megs, and the second is the rest of > >> Windows 7. Now when I boot to the livecd to partition the rest of the > >> disk for Gentoo fdisk says "Partition 1 does not end on a cylinder > >> boundary." Is this a problem? The other big question is: what do I do > > > > Dunno, it might be that win7 changed the amount of heads/sectors that > > could give that notice from fdisk. I would not be to worrified about > > it (Installing windows would be more horrifying). If you have a > > traditional hd then the worst thing I think might be that reads/writes > > would be slower. > > If I'm not mistaken, this alignment is actually a good thing. It is > related to the transition from 512 B blocks to 4 kB and also helps > alignments for SSDs. In this regard, Win 7 behaves very clever and > really much better than the old and proven Linux tools (unless you know > what you are doing and are aware of every issue). IMHO it is a real > shame that most Linux tools are still behind in this regard. Only some are. The 'parted -a optimal' or gparted will seek to align the end of a partition, but you will find that it may under/overshoot your specified size to achieve that. fdisk et al have some development to do yet. > If you think you have an HDD with 4kB blocks, ask and I can provide you > with some links on that topic. > > >> about the first partition in the partition table? It is an HPFS/NTFS > >> partition and has been toggled bootable. It also has some stuff in it > >> that looks like it's important to Windows: a BOOTSECT.BAK file, a Boot > >> directory, a System Volume Information directory, and a bootmgr file. > >> Now for my Gentoo install, how and where do I make a /boot partition? > >> Do I replace the Windows 7 boot partition with /boot? If so, what > >> happens to the contents? or Do I make a /boot partition on /dev/sda3 > >> and toggle the bootable flag there? > > > > Something like that. You could install gentoo on one partition (I > > don't recommend). No! Nothing like that. Leave the MS Windows boot partition alone and flagged as boot. MS Windows needs this, while Linux does not. > > Just make partitions like you would do without windows. When you do > > the grub-install script or by hand grub links the boot to the > > partition where boot exists. You should not remove or change the > > windows partitions or the data windows will probably brake when you > > do. Yep. Create a new partition; e.g. /dev/sda3 and use that as the /boot mountpoint for your Linux OS. This is where the grub fs, Linux OS kernels and related files will be saved. > AFAIK, grub does not need the bootable flag. Leave it alone. Maybe > Windows needs it, maybe it is just for good measure, I don't know. This is correct, MS Windows needs it and it will not boot without it, especially if you retain the MSWindows MBR boot code - although you can install GRUB in the MBR and chainload MSWindows from there with it. HTH. -- Regards, Mick
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