Linux Commands Examples

A great documentation place for Linux commands


make a GRUB rescue image

see also : grub-mkimage


grub-mkrescue [OPTION] SOURCE...

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cp grub.cfg isodir/boot/grub/grub.cfg
grub-mkrescue -o myos.iso isodir
rm -rf isodir
cp bin/initrd/initrd.img build/iso/initrd
grub-mkrescue -o alphaos.iso build/iso/
qemu-system-i386 alphaos.iso


Make GRUB CD-ROM, disk, pendrive and floppy bootable image.
, --help

print this message and exit

-v, --version

print the version information and exit

-o, --output=FILE

save output in FILE [required]


pre-load specified modules MODULES


save ROM images in DIR [optional]


use FILE as xorriso [optional]


use FILE as grub-mkimage


apply size reducing measures [optional]

xorriso -as mkisofs -help generates a bootable rescue image with specified source files, source directories, or mkisofs options listed by the output of ’grub-mkrescue’

Option -- switches to native xorriso command mode.

reporting bugs

Report bugs to <bug-grub[:at:]gnu[:dot:]org>.
Mail xorriso support requests to <bug-xorriso[:at:]gnu[:dot:]org>.

see also


The full documentation for grub-mkrescue is maintained as a Texinfo manual. If the info and grub-mkrescue programs are properly installed at your site, the command

info grub-mkrescue

should give you access to the complete manual.

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