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 = mount with UUID =
 * [http://sourceforge.jp/magazine/08/09/18/0148228/2 UUIDを使ったディスクドライブ指定 - SourceForge.JP Magazine]
   * 「vol_id /dev/*」 でUUIDを取得できる
   * knoppix(debian)では「/lib/udev/vol_id」という変な場所にコマンドがあるので注意

 = swapが複数あるときの優先順位 =
 * [http://www.linux.com/learn/docs/man/4244-swapon2 swapon.2]
   * Each swap area has a priority, either high or low. The default priority is low. Within the low-priority areas, newer areas are even lower priority than older areas. 
   * All priorities set with swapflags are high-priority, higher than default. They may have any non-negative value chosen by the caller. Higher numbers mean higher priority. 
   * Swap pages are allocated from areas in priority order, highest priority first. For areas with different priorities, a higher-priority area is exhausted before using a lower-priority area. If two or more areas have the same priority, and it is the highest priority available, pages are allocated on a round-robin basis between them. 
 * [http://ubuntuforums.org/showthread.php?t=38613 SWAP Priority Setting - Ubuntu Forums]

 = mount disk image =
 * [http://lostman-worlds-end.blogspot.com/2009/05/blog-post_18.html (鬱とSEと)コンピュータ: ディスクイメージのマウント]
 * [http://ubuntuforums.org/showthread.php?t=711773 mount dd image of and entire disk - Ubuntu Forums]