Why is the root file system mounted read-only during boot and remounted with write permission later on?
A. Because if problems with the root file system are detected during the boot, fsck can be run, without risk of damage.
B. Because this way crackers cannot collect information about root with boot sniffers
C. To avoid writing to the disk, unless the root password is known.
D. To avoid other operating systems overwriting the Linux root partition
E. Because the disk has its own write protection that cannot change by the operating system.
題解
先使用唯讀的方式來掛載根目錄的檔案系統，可以確保開機發生問題的時候資料不會遭到破壞。