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On Fri, 10 Aug 2012 10:25:51 -0400 |
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Allan Gottlieb <gottlieb@×××.edu> wrote: |
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> I am getting a new laptop from dell that will dual boot windows (in |
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> case I need dell maintenance) and gentoo (real work). I have done |
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> this often, but there are three new aspects this time. |
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> |
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> 1. ssd. |
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> 2. new udev (/usr part of boot partition?) |
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> 3. grub2. |
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I have one of those. But I decided to stick with traditional DOS |
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partitioning style and grub instead of GPT and grub2. |
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> My plan 1s to have / + /usr one partition and boot from it. All else |
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> (/tmp, /var, /home, /opt) would be lvm2. dracut would not be used. |
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That's OK. Lately I put /usr on / anyway, I figure 1980 was 32 years |
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ago and I don't *actually* need ultra-minimal rescue systems anymore. I |
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keep /opt on / too for the same reasons, and that the stuff I use |
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in /opt never changes. |
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> |
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> The laptop will have a 256GB ssd. Can I partition it the same as I |
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> would have for an hd? Are there extra alignment considerations? |
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I don't know of any special partition considerations. Just start at |
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the 1M mark and align on 4096 like you would for spinning disks. |
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What you will need is TRIM support and for that you use ext4. Just add |
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"discard" to the mount options for the ext4 volumes. |
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You also don't need an IO scheduler - ssd access is random like |
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RAM, no heads moving in and out so no sector ordering to worry about. |
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Configure the scheduler as NOOP in kernel config if all drives are ssd's |
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> The gentoo-wiki page for grub2 mentions an "official article" for |
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> grub2 (dev.gentoo.org/~scarabeus/grub-2-guide.xml) that |
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> describes both mbr- and efi-based systems. Using efi and gpt have |
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> advantages but the configuration described involves an efi partition |
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> /boot having a FAT format. I was hoping to avoid dracut and have all |
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> of / + /usr on the boot partition. Does this mean I should use the |
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> mbr-based installation? |
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Unless I'm mistaken, Windows still does not boot from GPT disks (maybe |
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8 is different). If that is indeed the case, then you do need to stik |
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with mbr for now. |
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Check what Google finds about your chosen Windows version's boot needs. |
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That will tell you what you need to od. |
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-- |
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Alan McKinnon |
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alan.mckinnon@×××××.com |
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