SystemRescueCD boot parameters [^]
 |
-The following info applies to SystemRescueCD v. 1.5.4. In case +The following info applies to SystemRescueCD v. 1.5.5. In case you need to get info for a more recent version of SystemRescueCD please see the page "Sysresccd-manual-en Booting the CD-ROM" |
The boot parameters you can use are:
General boot options
-Press <TAB> to add additional options. +
Press <TAB> to add additional options (in SystemRescueCd-1.5 and more recent)
- docache: causes the CD-ROM will be fully loaded into memory. A slower start but once complete, programs start faster and the CD drive will be released allowing normal access to other CDs. This requires 400MB of memory to cache everything (including the
bootdisksandisolinuxdirectories). Addlowmemif you have less that 400MB of memory of to prevent these directories to be copied. -
During boot you will be prompted for the keyboard configuration, avoid this by using -
-- setkmap=kk: which defines the keymap to load where
kk(example:setkmap=defor German keyboards) + - setkmap=kk: which defines the keymap to load where
kk(example:setkmap=defor German keyboards). This way you won't be prompted for the keyboard configuration during the boot. - root=/dev/xdnp: the root=<device> option boots an existing linux system. For example, if you have linux Gentoo installed on
/dev/sda6, userescuecd root=/dev/sda6to start it. Keep in mind that you must use a 64bit kernel if your system is made of 64bit programs. This option works with LVM volumes. Userescuecd root=/dev/VolGroup00/LogVol00. Support is also provided forroot=auto, which scans all the block devices tfor a linux system. The first linux system found will be started. So withroot=autolet you start the system installed from the CD-ROM in case you have problem with your boot loader or kernel. It's also possible to specify a partition using itsfilesystem labelorfilesystem uuid. If the label of the partition where linux is installed ismylinux, then boot it usingrescuecd root=LABEL=mylinux. Similarlyroot=UUID=b3d3bec5-997a-413e-8449-0d0ec41ccba7. See more details. - initscript=service:action: This options allows start/stop a service at boot time. For instance if you need the samba service to be started, you can boot with:
initscript=samba:start. This does the same thing as/etc/init.d/samba start. Use this option multiple times for different services. All the actions that are supported by an initscript can be used. - backstore=xxx: SystemRescueCd comes with support for the backing-stores. A backing-store saves all the changes you can make. so that you keep these changes the next time you boot it. By default, sysresccd automatically scan removable devices (eg: USB sticks) at boot time and uses the first backing-store it finds. A backing-store is not mandatory and it the scan fails it will store the files which change in memory. To disable the disks scan at boot time specify
backstore=offon the boot command line. If you want to save your backing-store file on an harddisk, boot withbackstore=alldevto scan all devices (not just removable devices). The default location for backing-stores file is any file namedsysrcd.bslocated at the root of a disk which is often an USB stick. Change the path by usingbackstore=/sysrcd/mybackstore.bs. See backing-stores. @@ -560,8 +557,8 @@
Hardware, drivers and troubleshooting options- dodebug: Enables verbose messages in linuxrc
- doload=xxx: loads needed modules, multiple occurrences are permitted (example:
doload=3c59x) - - noload=xxx: prevents loading modules, multiple occurrences are permitted (example:
noload=3c59x). Use this option if you have a problem when the system loads a particular module. +- doload=xxx: loads needed kernel modules, multiple comma separated occurrences are permitted (example:
doload=3c59x,e1000) + - noload=xxx: prevents loading kernel modules, multiple comma separated occurrences are permitted (example:
noload=3c59x,e1000). Use this option if you have a problem when the system loads a particular module. - nonet: this will disable the network auto detection at startup
- scandelay=x: pauses x seconds during the startup to allow slow devices to initialize. This is required when you boot an USB device. A delay of only few seconds should be enough.
@@ -584,7 +581,9 @@
- skipmount=/dev/xxx: The system mounts all the storage devices at boot time to find the sysrcd.dat file. If your hard disk is broken it should be mounted. Boot with
skipmount=/dev/sda1 skipmount=/dev/sda2to ignore these two partitions.
-
Network configuration and remote access- dodhcp: to request a DHCP server provide network attributes including an IP address, gateway... . otherwise,
+
- nonm: to disable the Network-Manager service that conflicts with the standard network command line tools such as
ifconfigandip. You can use this option if you want to configure the network using these commands. This option is not necessary when SystemRescueCd is booting from the network since the service is automatically stopped in that case. This option requires SystemRescueCd-1.5.5 or more recent. + - dodhcp: to request a DHCP server provide network attributes including an IP address, gateway... +
- nodhcp: never run the dhcp client in the initramfs boot script. May be useful if you use PXE boot on a computer with several ethernet interfaces. Support for this option is available in SystemRescueCd-1.5.5-beta2 and more recent
- ethx=ipaddr/cidr: Sets the static IP address of all the ethernet interfaces on the system. The
/cidrextension is optional. For instance, if you use optionethx=192.168.0.1on a machine with two ethernet adapters, botheth0andeth1will be configured with192.168.0.1. You can use the formatethx=10.0.0.1/24(using the cidr notation) if you don't use the default netmask. - eth0=ipaddr/cidr: This option is similar to
ethx=ipaddr/cidrbut it configures only one interface at a time. To configure the network on a server that has two interfaces, use:eth0=192.168.10.1/24 eth1=192.168.20.1. - dns=ipaddr: Sets the static IP address of the DNS nameserver you want to use to resolve the names. For instance
dns=192.168.0.254means that you want to use192.168.0.254as the DNS server. @@ -592,7 +591,7 @@ - dhcphostname=myhost: Sets the hostname that the DHCP client will send to the DHCP server. This may be required if the default hostname cannot be used with your DHCP configuration. This option has been introduced in SystemRescueCd-1.3.5.
- rootpass=123456: Sets the root password of the system running on the livecd to
1234. That way you can connect from the network and ssh on the livecd and give123456password as the root password. - vncserver=x:123456: The vncserver boot option has been introduced in SystemRescueCd-1.0.2. This options forces the system to configure the VNC-server and to start it automatically at boot time. You have to replace
xwith the number of displays you want, and123456with your password The password must be between 5 and 8 characters, else the boot option will be ignored. In other words thevncserver=2:MyPaSsWdoption will give you access to two displays (display=1 on tcp/5901 and display=2 on tcp/5902). Display 0 is reserved for X.Org since SystemRescueCd-1.1.0. - - nameif=xxx: You can can specify what interface name to give to a particular interface using the mac address. You need SystemRescueCd-1.1.0 or newer to do that. Here is how you can specify which interface is using which mac address on a machine with two network interfaces:
nameif=eth0!00:0C:29:57:D0:6E,eth1!00:0C:29:57:D0:64. Be careful, you have to respect the separator (comma between the interfaces and exclamation marks between the name and the mac address). + - nameif=xxx: You can can specify what interface name to give to a particular interface using the mac address. You need SystemRescueCd-1.1.0 or newer to do that. Here is how you can specify which interface is using which mac address on a machine with two network interfaces:
nameif=eth0!00:0C:29:57:D0:6E,eth1!00:0C:29:57:D0:64. Be careful, you have to respect the separator (comma between the interfaces and exclamation marks between the name and the mac address). You can also use the magic keyword BOOTIF with SystemRescueCd-1.5.4 and more recent when you boot from pxelinux. The pxeboot loader will set BOOTIF to the name of the interface used to boot. You can then use something likenameif=eth0!BOOTIFif you want the boot interface to be calledeth0on a computer with several Ethernet interfaces.
Network boot using PXESystemRescueCd provides several options for booting from the network using PXE. @@ -1187,7 +1186,7 @@
- nonm: to disable the Network-Manager service that conflicts with the standard network command line tools such as
Getting backups [^]
-In this page I will demonstrate the creation of an image file by getting a backup of a virtual partition (/dev/hdb1). The image file will be saved in another virtual partition (/dev/hda1).
+In this page I will demonstrate the creation of an image file by getting a backup of a virtual partition (/dev/sdb1). The image file will be saved in another virtual partition (/dev/sda1).
The first thing you do when you want to get a backup of a disk/partition, is make sure both the souce (to be backed up) and target (to hold the image file) partitions are in excellent condition (error free). This is the logical thing to do, cause I wouldn't want to backup a corrupt partition, or end up with a corrupt image file.
@@ -1197,7 +1196,7 @@
-The following pressentation has been made using
Clonezilla Live v 1.2.3-27 +The following pressentation has been made using
Clonezilla Live v 1.2.5-17Getting the backup [^]
Clonezilla-SysRescCD starting screen [^]
@@ -1241,13 +1240,13 @@Next screen [^]
This is where I choose the location of the image file. It will be saved at the root directory of the selected partition.
-I select partition hda1 and press ENTER.
+I select partition sda1 and press ENTER.
and then ENTER again.
+As we can see, /dev/sda1 has been successfully mounted under /tmp/local-dev.
This screen displays the mounting result.
-As we can see, /dev/hda1 has been successfully mounted under /tmp/local-dev.Next Screen [^]
@@ -1259,7 +1258,7 @@
I select Beginer mode to accept the default backup options. If you select Expert mode, you can choose the options yourself. More details can be found here.Next Screen [^]
In this screen I select the image name.
-I type "Backup_5-2010_hdb", which in my opinion is more informative name than the default. +I type "Backup_22-2010_sdb", which in my opinion is more informative name than the default.Next Screen [^]
@@ -1285,7 +1284,7 @@Getting backups on Samba [^]
What if you don't have a spare local disk or partition or a USB disk? How will you be able to get a backup of your system? Well, if your PC is on the same LAN with another PC running Windows (or linux), you can use Samba to save your image file on that remote PC (which we will call Samba server from now on).
Using Samba you will be able to mount a Windows share resource (or Samba share resource), from within Clonezilla Live, and save the image file there. Then you can boot that PC using SystemRescueCD and create a restore DVD.
-In this page I will demonstrate the creation of an image file by getting a backup of my Windows partition (/dev/hda1). The image file will be save in my Samba server which is my laptop (ip: 10.0.0.2, Windows share resource name: data). +In this page I will demonstrate the creation of an image file by getting a backup of my second disk (/dev/sdb). The image file will be save in my Samba server which is my laptop (ip: 10.0.0.3, Windows share resource name: all_my_images).What is Samba? [^]
We read at http://us1.samba.org/samba/:
@@ -1337,7 +1336,7 @@Screen "Mount Samba Server" (fourth time) [^]
This is where I have to enter the directory name on my Samba server, in which the image file will be saved.
@@ -1352,7 +1351,7 @@
I type "/all_my_images" and press ENTER.
-At this point I informed I will be asked for the password for user spiros.
+At this point I'm informed I'm going to be asked for the password for user spiros.
I will be able to continue only after entering it correctly.
Next Screen [^]
In this screen I select the image name.
-I type "Backup_5-2010_hdb", which in my opinion is more informative name than the default. +I type "Backup_22-2010_sdb", which in my opinion is more informative name than the default.Next Screen [^]
@@ -1754,9 +1753,12 @@eject /dev/dvd
Note: If your drive can't reload the disc, insert the disc back right after ejecting it.
Finally, add the image file to the disc:
-growisofs -M /dev/dvd -R -J -V "Backup_5-2010_hdb" --publisher "Your Name" -graft-points /Backup_5-2010_hdb/=/media/usb/Backup_5-2010_hdb
+growisofs -M /dev/dvd -R -J -V "Backup_5-2010_hdb" \
+--publisher "Your Name" -graft-points \
+/Backup_5-2010_hdb/=/media/usb/Backup_5-2010_hdbNote: In the command replace Your Name with anything you want to be the publisher ID of the disc. If you don't want the disc to have any publisher ID, run this command instead:
-growisofs -M /dev/dvd -R -J -V "Backup_5-2010_hdb" -graft-points /Backup_5-2010_hdb/=/media/usb/Backup_5-2010_hdb
+growisofs -M /dev/dvd -R -J -V "Backup_5-2010_hdb" \
+-graft-points /Backup_5-2010_hdb/=/media/usb/Backup_5-2010_hdb
Here we can see the boot menu of the disc.ZIP file instructions [^]
Often the image file is way too big to fit to even 8 GB DVD. Some people may also want to be able to overwrite the backup when it becomes outdated. In addition, netbooks don't have optical drives at all.
- skipmount=/dev/xxx: The system mounts all the storage devices at boot time to find the sysrcd.dat file. If your hard disk is broken it should be mounted. Boot with
- doload=xxx: loads needed kernel modules, multiple comma separated occurrences are permitted (example: