[SOLVED] Dual booting arch onto an SSD that already has W7 in MBR?

Question

I currently have windows 7 64bit installed onto a 256gb m4 SSD. I would like to be able to dual-boot W7 and Archlinux, but so far I've been getting wildly varying accounts of doom and data deletion from every source that I've looked at- and unfortunately, the Archwiki's guide to dualbooting is out of date.
So here's the questions:
First, is UEFI something I need to look at? At the moment W7 seems to be on MBR. I'm getting conflicting accounts on whether this is not even an issue or if it will attempt to make my computer eat my dog.
Next, what is going on with sectors and alignment and such? Some people ignore them, some people delve so far into it that I think I vaguely know they're still talking about a hard drive.
Which leads me into partitioning, and not doing it in a way that's terrible. I can't find any information on this anywhere that isn't buried within the above-mentioned posts, along with incredibly vague warnings of GParted moving a partition, spoken of in a way as if that data is lost to the twilight zone.
Finally... pulling all this together is the largest issue.
Do any of you know good, factual resources where I can look into this stuff?
Last edited by ilar (2013-04-03 03:53:31)

Answer 1

1) If you knew what UEFI was you should have known it wasn't an option, and shouldn't have asked about it.
2) (G)parted and gdisk (if you go with GPT at some point) handle SSD sector alignment automatically, and have for some time.  A google search could have revealed that.
3) Whether one uses an SSD or HDD, dual-booting will be the same: 2+ partitions devoted to separate operating systems.  While SSDs and HDDs may be fundamentally different constructs, booting from them is not different at all.  That's why you aren't finding anything saying such.
4) As for the wiki being out-of-date, the specific reason (as stated page's in the header) is that GRUB legacy is no longer officially supported in Arch.  Disregard that information and use GRUB2/Syslinux/LILO and the process remains the same: Install the operating systems side-by-side and chainload the secondary OS.  It doesn't matter one bit: I've dual-booted every Linux distro I've used over the past four years with Windows, from Ubuntu to Mint to SuSE to Sabayon to Arch to whatever, and I've done it all the exact same way, using HDDs and an SSDs and both in combination.  There's plenty of information out there on this, and your time could better have been spent looking it up rather than arguing with people here. 
5) Welcome to Arch.