debian无法进入grub?

[罗非鱼]

tiger@debian:~$ sudo apt-cache search grub
[sudo] password for tiger:
bootcd - run your system from cd without need for disks
gfxboot-examples - tool to test and create graphical boot logos (example themes)
gfxboot-themes-opensuse - tool to test and create graphical boot logos (openSUSE theme)
gfxboot-themes-sled - tool to test and create graphical boot logos (SLED theme)
gfxboot-themes-sles - tool to test and create graphical boot logos (SLES theme)
gfxboot-themes-upstream - tool to test and create graphical boot logos (upstream theme)
gfxboot-dev - tool to test and create graphical boot logos (development)
gfxboot - tool to test and create graphical boot logos (runtime)
ggz-grubby - GGZ Gaming Zone: chat bot with the ability to play games
grub-choose-default - Control Grub Default through a GUI
grub-splashimages - a collection of great GRUB splashimages
grub-disk - GRUB bootable disk image (dummy package)
grub-doc - Documentation for GRand Unified Bootloader (dummy package)
grub-legacy-doc - Documentation for GRUB Legacy
grub-legacy - GRand Unified Bootloader (Legacy version)
grub - GRand Unified Bootloader (dummy package)
grub2-splashimages - a collection of great GRUB2 splashimages
grub-common - GRand Unified Bootloader, version 2 (common files)
grub-coreboot - GRand Unified Bootloader, version 2 (Coreboot version)
grub-efi-amd64 - GRand Unified Bootloader, version 2 (EFI-AMD64 version)
grub-efi-ia32 - GRand Unified Bootloader, version 2 (EFI-IA32 version)
grub-efi - GRand Unified Bootloader, version 2 (dummy package)
grub-emu - GRand Unified Bootloader, version 2 (emulated version)
grub-firmware-qemu - GRUB firmware image for QEMU
grub-ieee1275 - GRand Unified Bootloader, version 2 (Open Firmware version)
grub-linuxbios - GRand Unified Bootloader, version 2 (dummy package)
grub-pc - GRand Unified Bootloader, version 2 (PC/BIOS version)
grub-rescue-pc - GRUB bootable rescue images, version 2 (PC/BIOS version)
grub2 - GRand Unified Bootloader, version 2 (dummy package)
grub-invaders - multiboot compliant kernel game
libaal-dev - Reiser4's application abstraction library
libtext-markdown-perl - Markdown and MultiMarkdown markup languages library
libtext-typography-perl - markup ASCII text with correct typography for HTML
memtest86+ - thorough real-mode memory tester
memtest86 - thorough real-mode memory tester
multiboot - The Multiboot specification
octave-outliers - outliers detection function for Octave
python-markdown - text-to-HTML conversion library/tool
gptsync - GPT and MBR partition tables synchronisation tool
libreiser4-dev - Reiser4's filesystem access and manipulation library
sa-exim - SpamAssassin filter for Exim
startupmanager - Grub, Usplash and Splash screen configuration
sugarplum - an automated and intelligent spam trap/cache-poisoner
tiger@debian:~$ grub2
bash: grub2: command not found
tiger@debian:~$ sudo grub2
sudo: grub2: command not found
tiger@debian:~$ sudo grub
sudo: grub: command not found
tiger@debian:~$
我明明已经安装了grub,为何无法调用它呢？

[leeaman]

你想做什么?