Installing arch on extended partition/logical drive

hi there. i am a newbie to linux and about to install arch as my first linux installation.
i am using vaio AR laptop already running xp and would like to keep it and have double boot without reinstalling xp.
have 200gb hdd with recovery primary partition, system primary partition (where xp installed) and extended partition with one logical drive (D: ) of 100gb.
i was considering deleting the logical drive (and the extended partition if necessary), which if i understand correctly should give me 100gb of unallocated space.
i would then like to install arch on the 100gb of unallocated space.
i would like to know if the way i am planning to go about it is possible, and whether i can install arch completely on one extended partition devided into logical drives.
any comments or sugestions would be much appreciated...
Last edited by o12357 (2009-09-04 12:45:18)

I believe that is correct. Grub has to have a reference to the md0 raid for booting.
Please see
http://bbs.archlinux.org/viewtopic.php?id=79306
This solution to the boot problem with md0 should be helpful for your case since grub must be modified to accomodate the raid.
I am not sure the data in your raid0 is appropo for your use in booting archlinux, however. If I understand correctly, it is windows related data and not applicable to linux.
If your raid0 is partitioned, it would be possible to establish a boot for each system using grub partition references differing for linux and windows systems.
Thus, you would have grub entries complete for linux and another set complete for windows.
I think AFAICT windows has to be first in the usual dual booting but am not an expert on that, not having used dual boot. It may be somewhat different when using raid for booting dual systems.
I suggest you read the wiki on dual boots.
Perhaps you will get advice from others on the subject also.
EDIT: Your asumption that all OS'es will recognize the raid0 devices as a single drive does not apply to archlinux which does not autodetect raid arrays but must have initramfs populated with the raid data established by mdadm and initiated into initramfs by mkinitcpio. Then during boot sequences , the array is assembled and enabled as a single drive,i.e., md0. The boot sequence assembles all drives having identical UUID's in the raid array.
Last edited by lilsirecho (2009-09-05 18:23:36)

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