02-26-2009
Quote:
Originally Posted by
vinayjain
Hello.
U have posted that you have 7 different os.
But we can have only 4 primary partitions and thus we can have maximum 4 os.
If you use a seperate boot partition, you can load the kernel from a primary partition then boot into an extended partition. Many different Linux OSes can share one boot partition, too.
Quote:
I first installed Redhat 5.
After that i installed Ubuntu 8.10.
I am unable to boot into Redhat.
In the menu Redhat is not shown as the MBR is overwritten by Ubuntu GRUB.
GRUB couldn't possibly keep all its settings in the tiny amount of space a boot sector gives, it's actually smart enough to understand some partition types, to let it reach in and grab a config file. Usually /boot/grub/grub.conf, whichever partition that ended up at in your file tree. It'll be reading the new grub.conf instead of the old one now, but if you can get your old one, you can add settings from it to your new one.
Quote:
Now how to make the dual boot ??
You can't just install lots of OSes on top of each other and expect it to work, you need to plan ahead. It may still be recoverable at this point if you can find the grub.conf from your redhat partition. Post both your new and old grub.conf files here, in code tags, and we can help you make a grub.conf that can boot either.
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LEARN ABOUT REDHAT
rhnreg_ks
RHNREG_KS(8) Red Hat Linux System Manual RHNREG_KS(8)
NAME
rhnreg_ks - a program for non interactively registering systems to Red Hat Network
SYNOPSIS
rhnreg_ks [OPTION]... [PACKAGE NAME]...
DESCRIPTION
rhnreg_ks is a utility for registering a system with the Red Hat Network. It is designed to be used in a non-interactive enviroment (a
kickstart style install, for example). All the information can be specified on the commandline or stdin.
--profilename
Specify the profilename that should be used as an identifier for the system in Red Hat Network
--username
The username to register the system with under Red Hat Network. This can be an existing Red Hat Network username, or a new username.
--password
The password associated with the username specified with the --username option. This is an unencrypted password.
--orgid
Specify an organizational id of the org to register this system under. This is optional, and only used if registered a system to an
existing Red Hat Network organization.
--orgpassword
The password assocated with the orgig specified with the --orgid option. This is an unencrypted password.
--email
The email address associated with the username specified iwth the --username option.
--serialnumber
Specify a servial number to associate with the system. This is optional, and only useful when combined with an orgid.
--contactinfo
Read contact info from standard in. The format is one entry per line, colon seperated. Valid options are reg_num, title, first_name,
last_name, company, position, address1, address2, city, state, zip, country, phone, fax, contact_email, contact_mail, contact_phone,
contact_fax, contact_special, contact_newsletter.
--nohardware
Do not probe or upload any hardware information.
--nopackages
Do not profile or upload any package information.
--force
Register the system even if it has already been registered.
--version
Show the version fo rhnreg_ks
--proxy
Specify a http proxy to use.
FILES
/etc/sysconfig/rhn/up2date
Configuration settings for up2date and rhnreg_ks
/usr/share/rhn/RHNS-CA-CERT
The ssl certificate authority file used by rhnreg_ks to validate the Red Hat Network ssl servers.
EXAMPLES
The following registers a new system to Red Hat Network.
rhnreg_ks --profilename "example_profile_name" --username "someexampleuser@example.com" --password "foobar"
The following examples registers a new system to Red Hat Network including contact info.
rhnreg_ks --profilename "example_profile_name" --username "someexampleuser@example.com" --password "foobar" --contactinfo < contactinfo
where the file "contactinfo" contains data in the format:
first_name: Billy
last_name: Bob
company: SomeCompanyName
city: Springfield
fax: 555-5555
phone: 555-5555
SEE ALSO
Configuration can be done via up2date --configure. rhnreg_ks is used to register a system to Red Hat Network. Visit <http://rhn.red-
hat.com> for access or to sign up. You can also run up2date to register a system with Red Hat Network.
Authors
Written by Adrian Likins <alikins@redhat.com>
REPORTING BUGS
Report bugs to <http://bugzilla.redhat.com>.
COPYRIGHT
Copyright (C) 1999-2002 Red Hat, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE.
4th Berkeley Distribution Wed 10 April 2002 RHNREG_KS(8)