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Change the partition size

  1. Use gparted from external disk (e.g., Ubuntu Live USB disk) and adjust partition sizes as you want.
    • note: gparted has bugs around handling HFS, so it behaves as if it has hung while it is moving a partition that contains HFS. Be patient and let it work. It may take more than 2 hours.
  2. If Windows won’t boot after this, you have to either reconfigure legacy MBR or rebuild BCD.

Reconfigure MBR

  1. Use gptsync from external disk.

Rebuild BCD

  1. Use fdisk and mark Windows partition as active.
    • This activeness seems not exclusive; i.e. more than one partition can be active at the same time. I’m not sure this causes any problems.
  2. Boot from Windows installation disk.
  3. Proceed to advance startup options and launch Command Prompt.
  4. Run bootrec /RebuildBcd. (you have to type y once, in most cases)
  5. Reactivate appropriate partition if necessary.

Restore initial bootloader

  1. Copy first 446 bytes from another disk; e.g. sudo dd if=/dev/sdc of=/dev/sda bs=446 count=1

yum upgradeしようとすると依存解決がうまくいかない


# yum --changelog upgrade
Loaded plugins: changelog, fastestmirror
Loading mirror speeds from cached hostfile
 * base:
 * epel:
 * extras:
 * updates:
Resolving Dependencies
--> Running transaction check
---> Package php-pecl-mongo.x86_64 0:1.6.2-1.el7.remi.5.6 will be updated
---> Package php-pecl-mongo.x86_64 0:1.6.11-1.el7 will be an update
--> Processing Dependency: php(zend-abi) = 20100525-64 for package: php-pecl-mongo-1.6.11-1.el7.x86_64
--> Processing Dependency: php(api) = 20100412-64 for package: php-pecl-mongo-1.6.11-1.el7.x86_64
--> Finished Dependency Resolution
Error: Package: php-pecl-mongo-1.6.11-1.el7.x86_64 (epel)
           Requires: php(zend-abi) = 20100525-64
           Installed: php-common-5.6.5-1.el7.remi.x86_64 (@remi-php56)
               php(zend-abi) = 20131226-64
           Available: php-common-5.4.16-23.el7_0.3.x86_64 (base)
               php(zend-abi) = 20100525-64
           Available: php-common-5.4.16-36.el7_1.x86_64 (updates)
               php(zend-abi) = 20100525-64
Error: Package: php-pecl-mongo-1.6.11-1.el7.x86_64 (epel)
           Requires: php(api) = 20100412-64
           Installed: php-common-5.6.5-1.el7.remi.x86_64 (@remi-php56)
               php(api) = 20131106-64
           Available: php-common-5.4.16-23.el7_0.3.x86_64 (base)
               php(api) = 20100412-64
           Available: php-common-5.4.16-36.el7_1.x86_64 (updates)
               php(api) = 20100412-64
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

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pdflatex で US Letter の文書を出力する(PDF のページサイズを設定する)

ACM にカメラレディ論文を提出するために要項を見ていたところ,ページのサイズは US Letter (8.5 in * 11 in) でなければならないと書かれていた.
慌てて自分の手元のファイルを pdfinfo で調べてみると

Page size:      595.276 x 841.89 pts (A4)


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  1. GitHubに慣れていなければ右の方にあるZIPでダウンロードボタンを探す
  2. chrome://extensions を開く
  3. 「開発者モード」にチェックボックスが入っていなければ入れる
  4. 「パッケージ化されていない拡張機能を読み込む…」
  5. ダウンロードして展開した manifest.json のあるディレクトリを指定する