UEFI と grub あたりのメモ
nort-wmli.blogspot.comここを参考に…。
$ su
パスワード:
tomoki-VJF152 tomoki # cd /boot/efi
tomoki-VJF152 efi # ls
BCD.LOG EFI boot-sav
tomoki-VJF152 efi # cd EFI
tomoki-VJF152 EFI # ls
Boot Microsoft VAIO ubuntu
tomoki-VJF152 EFI # ls Boot
bootx64.efi
tomoki-VJF152 EFI # ls Microsoft
Boot
tomoki-VJF152 EFI # ls VAIO
Boot
tomoki-VJF152 EFI # ls ubuntu
fw fwupx64.efi grub.cfg grubx64.efi mmx64.efi shimx64.efi
tomoki-VJF152 EFI # ls Microsoft/Boot
BCD bg-BG el-GR hr-HR memtest.efi ro-RO tr-TR
BCD.LOG boot.stl en-GB hu-HU nb-NO ru-RU uk-UA
BCD.LOG1 bootmgfw.efi en-US it-IT nl-NL sk-SK zh-CN
BCD.LOG2 bootmgr.efi es-ES ja-JP pl-PL sl-SI zh-HK
BOOTSTAT.DAT cs-CZ et-EE ko-KR pt-BR sr-Latn-CS zh-TW
Fonts da-DK fi-FI lt-LT pt-PT sr-Latn-RS
Resources de-DE fr-FR lv-LV qps-ploc sv-SE
tomoki-VJF152 EFI # ls VAIO/Boot
BCD bootmgr.efi es-ES ja-JP pl-PL sl-SI zh-HK
BOOTSTAT.DAT cs-CZ et-EE ko-KR pt-BR sr-Latn-CS zh-TW
Fonts da-DK fi-FI lt-LT pt-PT sr-Latn-RS
Resources de-DE fr-FR lv-LV qps-ploc sv-SE
bg-BG el-GR hr-HR memtest.efi ro-RO tr-TR
boot.stl en-GB hu-HU nb-NO ru-RU uk-UA
bootmgfw.efi en-US it-IT nl-NL sk-SK zh-CN
tomoki-VJF152 EFI # man grub-install | less -X
GRUB-INSTALL(8) System Administration Utilities GRUB-INSTALL(8)
NAME
grub-install - install GRUB to a device
SYNOPSIS
grub-install [OPTION...] [OPTION] [INSTALL_DEVICE]
DESCRIPTION
Install GRUB on your drive.
--compress[=no,xz,gz,lzo]
compress GRUB files [optional]
-d, --directory=DIR
use images and modules under DIR [default=/usr/lib/grub/<plat‐
form>]
--fonts=FONTS
install FONTS [default=unicode]
--install-modules=MODULES
install only MODULES and their dependencies [default=all]
-k, --pubkey=FILE
embed FILE as public key for signature checking
--locale-directory=DIR use translations under DIR
[default=/usr/share/locale]
--locales=LOCALES
install only LOCALES [default=all]
--modules=MODULES
pre-load specified modules MODULES
--themes=THEMES
install THEMES [default=starfield]
-v, --verbose
print verbose messages.
--allow-floppy
make the drive also bootable as floppy (default for fdX
devices). May break on some BIOSes.
--boot-directory=DIR
install GRUB images under the directory DIR/grub instead of the
boot/grub directory
--bootloader-id=ID
the ID of bootloader. This option is only available on EFI and
Macs.
--core-compress=xz|none|auto
choose the compression to use for core image
--disk-module=MODULE
disk module to use (biosdisk or native). This option is only
available on BIOS target.
--efi-directory=DIR
use DIR as the EFI System Partition root.
--force
install even if problems are detected
--force-extra-removable
force installation to the removable media path also. This option
is only available on EFI.
--force-file-id
use identifier file even if UUID is available
--label-bgcolor=COLOR
use COLOR for label background
--label-color=COLOR
use COLOR for label
--label-font=FILE
use FILE as font for label
--macppc-directory=DIR use DIR for PPC MAC install.
--no-bootsector
do not install bootsector
--no-nvram
don't update the `boot-device'/`Boot*' NVRAM variables. This
option is only available on EFI and IEEE1275 targets.
--no-rs-codes
Do not apply any reed-solomon codes when embedding core.img.
This option is only available on x86 BIOS targets.
--no-uefi-secure-boot
do not install an image usable with UEFI Secure Boot, even if
the system was currently started using it. This option is only
available on EFI.
--product-version=STRING
use STRING as product version
--recheck
delete device map if it already exists
--removable
the installation device is removable. This option is only avail‐
able on EFI.
-s, --skip-fs-probe
do not probe for filesystems in DEVICE
Usage: grub-install [OPTION...] [OPTION] [INSTALL_DEVICE]
Install GRUB on your drive.
--compress[=no,xz,gz,lzo]
compress GRUB files [optional]
-d, --directory=DIR
use images and modules under DIR [default=/usr/lib/grub/<plat‐
form>]
--fonts=FONTS
install FONTS [default=unicode]
--install-modules=MODULES
install only MODULES and their dependencies [default=all]
-k, --pubkey=FILE
embed FILE as public key for signature checking
--locale-directory=DIR use translations under DIR
[default=/usr/share/locale]
--locales=LOCALES
install only LOCALES [default=all]
--modules=MODULES
pre-load specified modules MODULES
--themes=THEMES
install THEMES [default=starfield]
-v, --verbose
print verbose messages.
--allow-floppy
make the drive also bootable as floppy (default for fdX
devices). May break on some BIOSes.
--boot-directory=DIR
install GRUB images under the directory DIR/grub instead of the
boot/grub directory
--bootloader-id=ID
the ID of bootloader. This option is only available on EFI and
Macs.
--core-compress=xz|none|auto
choose the compression to use for core image
--disk-module=MODULE
disk module to use (biosdisk or native). This option is only
available on BIOS target.
--efi-directory=DIR
use DIR as the EFI System Partition root.
--force
install even if problems are detected
--force-extra-removable
force installation to the removable media path also. This option
is only available on EFI.
--force-file-id
use identifier file even if UUID is available
--label-bgcolor=COLOR
use COLOR for label background
--label-color=COLOR
use COLOR for label
--label-font=FILE
use FILE as font for label
--macppc-directory=DIR use DIR for PPC MAC install.
--no-bootsector
do not install bootsector
--no-nvram
don't update the `boot-device'/`Boot*' NVRAM variables. This
option is only available on EFI and IEEE1275 targets.
--no-rs-codes
Do not apply any reed-solomon codes when embedding core.img.
This option is only available on x86 BIOS targets.
--no-uefi-secure-boot
do not install an image usable with UEFI Secure Boot, even if
the system was currently started using it. This option is only
available on EFI.
--product-version=STRING
use STRING as product version
--recheck
delete device map if it already exists
--removable
the installation device is removable. This option is only avail‐
able on EFI.
-s, --skip-fs-probe
do not probe for filesystems in DEVICE
--target=TARGET
install GRUB for TARGET platform [default=i386-pc]
--uefi-secure-boot
install an image usable with UEFI Secure Boot. This option is
only available on EFI and if the grub-efi-amd64-signed package
is installed.
-?, --help
give this help list
--usage
give a short usage message
-V, --version
print program version
Mandatory or optional arguments to long options are also mandatory or
optional for any corresponding short options.
INSTALL_DEVICE must be system device filename. grub-install copies
GRUB images into boot/grub. On some platforms, it may also install
GRUB into the boot sector.
REPORTING BUGS
Report bugs to <bug-grub@gnu.org>.
SEE ALSO
grub-mkconfig(8), grub-mkimage(1), grub-mkrescue(1)
The full documentation for grub-install is maintained as a Texinfo man‐
ual. If the info and grub-install programs are properly installed at
your site, the command
info grub-install
should give you access to the complete manual.
grub-install (GRUB) 2.02~beta2-36November12017nuxmint1 GRUB-INSTALL(8)
UEFI でブートローダを壊したら
sda1 が ESP だったら（これは調べないといけない）
# mount /dev/sda1 /mnt # grub-install --target=x86_64-efi --efi-directory=/mnt --bootloader-id=grub
とかかな…。
現在の自分の VAIO の ESP は /dev/sdb2 のようだ。つまり Windows 側。Linux の方の ESP で boot しているのではなかったのだな。Windows の方に GRUB を放り込んでいいのかな。というか、いまそうなっているのだからいいらしい。なお、VAIO の BIOS を立ち上げるには [F3] または [F4] を押しながら電源を入れる。
/dev/sda1 が空なので、上の方法で grub-install してみる。しかし /boot/efi が変わらないので、変わりはない。ただ、今度は Windows の方が /dev/sda になった。
/etc/fstab を編集する。
#UUID=1A82-8B7B /boot/efi vfat umask=0077 0 1 UUID=A7F6-B2DF /boot/efi fat32 defaults 0 1
次を実行。
# mount /dev/sdb1 /boot/efi
これではうまくいかない。ちょっと怖いのでこれ以上はやめておく。
