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Special Forums Hardware Boot Loaders How to install grub on USB flash drive? Post 302462697 by vistastar on Thursday 14th of October 2010 09:28:37 PM
Old 10-14-2010
How to install grub on USB flash drive?

I wanna install grub on my flash drive for rescue usage.
My computer installs winxp, and I have fedora12 installed in vmware. I did like this:

step1: format the flash drive as FAT in winXP.
step2: in fedora12, mount the flash drive on /media/flash
step3: excute the command: grub-install --root-directory=/media/flash --no-floppy /dev/sdb.

in step3, It says: the file /media/flash/boot/grub/stage1 not read correctly. why?

In fact the command has created the flowing files on my flash drive:
.
`-- boot
`-- grub
|-- device.map
|-- e2fs_stage1_5
|-- fat_stage1_5
|-- ffs_stage1_5
|-- iso9660_stage1_5
|-- jfs_stage1_5
|-- minix_stage1_5
|-- reiserfs_stage1_5
|-- stage1
|-- stage2
|-- ufs2_stage1_5
|-- vstafs_stage1_5
`-- xfs_stage1_5

content in device.map is:
(hd0) /dev/sda
(hd1) /dev/sdb

Last edited by vistastar; 10-14-2010 at 11:40 PM..
 

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GRUB-INSTALL(8) 					  System Administration Utilities					   GRUB-INSTALL(8)

NAME
grub-install - install GRUB to a device SYNOPSIS
grub-install [OPTION] install_device DESCRIPTION
Install GRUB on your drive. -h, --help print this message and exit -v, --version print the version information and exit --modules=MODULES pre-load specified modules MODULES --boot-directory=DIR install GRUB images under the directory DIR/grub instead of the /boot/grub directory --grub-setup=FILE use FILE as grub-setup --grub-mkimage=FILE use FILE as grub-mkimage --grub-mkrelpath=FILE use FILE as grub-mkrelpath --grub-mkdevicemap=FILE use FILE as grub-mkdevicemap --grub-probe=FILE use FILE as grub-probe --no-floppy do not probe any floppy drive --allow-floppy Make the drive also bootable as floppy (default for fdX devices). May break on some BIOSes. --recheck probe a device map even if it already exists --force install even if problems are detected --disk-module=MODULE disk module to use INSTALL_DEVICE can be a GRUB device name or a system device filename. grub-install copies GRUB images into /boot/grub, and uses grub-setup to install grub into the boot sector. REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
grub-mkconfig(8), grub-mkimage(1), grub-setup(8), grub-mkrescue(1) The full documentation for grub-install is maintained as a Texinfo manual. 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) 1.99-12ubuntu5 October 2011 GRUB-INSTALL(8)
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