====== Fedora 22 で起動時に grub rescue が表示される ======
Fedora 22 で起動時に以下のエラーが表示される。\\
<code>
.
error: ../../grub-core/kern/dl.c:431:symbol `grub_strncpy' not found.
Entering rescue mode...
grub rescue>
</code>

===== grub rescue mode =====
<code>
grub rescue> ls
(hd0) (hd0,msdos3) (hd0,msdos2) (hd0,msdos1)
grub rescue> ls (hd0,msdos3)/
error: ../../grub-core/kern/fs.c:120:unknown filesystem.
grub rescue> ls (hd0,msdos2)/
error: ../../grub-core/kern/fs.c:120:unknown filesystem.
grub rescue> ls (hd0,msdos1)/
./ ../ lost+found/ eli/ grub2/ extlinux/ .vmlinuz-3.19.7-200.fc21.x86_64.hmac .vmlinuz-4.0.4-202.fc21.x86_64.hmac .vmlinuz-4.1.10-200.fc22.x86_64.hmac .vmlinuz-4.1.8-100.fc21.x86_64.hmac System.map-3.19.7-200.fc21.x86_64 System.map-4.0.4-202.fc21.x86_64 System.map-4.1.10-200.fc22.x86_64 System.map-4.1.8-100.fc21.x86_64 config-3.19.7-200.fc21.x86_64 config-4.0.4-202.fc21.x86_64 config-4.1.10-200.fc22.x86_64 config-4.1.8-100.fc21.x86_64 elf-memtest86+-5.01 initramfs-3.19.7-200.fc21.x86_64.img initramfs-fedup.img initramfs-0-rescue-7725dfc225d14958a625ddaaaea5962b.img initramfs-4.0.4-202.fc21.x86_64.img initramfs-4.1.10-200.fc22.x86_64.img initrd-plymouth.img memtest86+-5.01 vmlinuz-3.19.7-200.fc21.x86_64 vmlinuz-fedup vmlinuz-0-rescue-7725dfc225d14958a625ddaaaea5962b vmlinuz-4.0.4-202.fc21.x86_64 vmlinuz-4.1.10-200.fc22.x86_64 vmlinuz-4.1.8-100.fc21.x86_64
grub rescue> set prefix=(hd0,msdos1)/boot/grub
grub rescue> insmod (hd0,msdos1)/boot/grub2
grub rescue> insmod normal
grub rescue> normal
</code>