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Full Discussion: Linux root Password Reset
Top Forums UNIX for Beginners Questions & Answers Linux root Password Reset Post 303008536 by vbe on Saturday 2nd of December 2017 11:02:17 AM
Old 12-02-2017
Security here is to be understood from outer world, servers are in computer rooms, I doubt you unless you are a senior sysadm will have access, as mentionned above there is no more security if someone can physically get hold of your equipment, to be able to use grub means being in front of the PC... All you can do in such case is not allow to boot from any other device on your PC, and now you can guess what possible issue you risk...
That is why the hardening is difficult with cheap equipment
 

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GRUB(8) 								FSF								   GRUB(8)

NAME
grub - the grub shell SYNOPSIS
grub [OPTION]... DESCRIPTION
Enter the GRand Unified Bootloader command shell. --batch turn on batch mode for non-interactive use --boot-drive=DRIVE specify stage2 boot_drive [default=0x0] --config-file=FILE specify stage2 config_file [default=/boot/grub/menu.lst] --device-map=FILE use the device map file FILE --help display this message and exit --hold wait until a debugger will attach --install-partition=PAR specify stage2 install_partition [default=0x20000] --no-config-file do not use the config file --no-curses do not use curses --no-floppy do not probe any floppy drive --no-pager do not use internal pager --preset-menu use the preset menu --probe-second-floppy probe the second floppy drive --read-only do not write anything to devices --verbose print verbose messages --version print version information and exit REPORTING BUGS
Report bugs to <bug-grub@gnu.org>. SEE ALSO
update-grub(8), grub-install(8). The full documentation for grub is maintained as a Texinfo manual in the grub-legacy-doc package. If the info and grub programs are prop- erly installed at your site, the command info grub should give you access to the complete manual. grub (GNU GRUB 0.97) January 2013 GRUB(8)
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