Trouble starting CentOS after installing XE

After tackled XE on Window XP and 10g DS, I moved on to Linux. I installed CentOS 4.2, and everything seemed to work fine. Then I installed 10g XE with Start XE when CentOS boots up. Everything seemed to be fine, and I was able to login through the XE home page as system. Then I turned off the computer and went to sleep. Next day when I started the computer, my CentOS wouldn't boot. It stopped after:
Checking SWAP Spaces [OK]
The cursor was blinking...forever! The sad thing was I had to switched the power off to stop everything. I am a newbie to Linux. Did I miss something? Somebody help please?!

I don't run CentOS (but I admire this OS as being one of the best). When your boot-screen comes up, I assume it offeres you a choice between Cent and Windows. However does it ALSO offer a choice for Cent in "safe mode" or "rescue"? If so pick that and see if you can at least get into CentOS.
One note... on a lot of Linux systems they set the 'timer' on the boot screen to like 5 seconds... meaning if you don't make a choice it boots to the default (usually the first choice.) The way to stop the clock is to use the down-arrow key immediately when you see the boot-screen pop up.
Or it may look like this:
http://www.idevelopment.info/data/Oracle/DBA_tips/VMware_Workstation_50/images/create_vm_centos_enterprise_linux_ICENTOS_1.gif
and you have to hit a F key. Select "resuce' or "safe" etc. if given a choice. Hitting any F key should stop the timer.
There must be a Red Hat guy on this board that can give more info since CentOS is RHEL without the logo and a few proprietary modules.
Al

Similar Messages

Trouble booting CentOS after installing 10g XE

After tackled with XE on Window XP and 10g DS, I moved on to Linux. I installed CentOS 4.2, and everything seemed to work fine. Then I installed 10g XE with Start XE when CentOS boots up. Everything seemed to be fine, and I was able to login through the XE home page as system. Then I turned off the computer and went to sleep. Next day when I started the computer, my CentOS wouldn't boot. It stopped after:
Checking SWAP Spaces [OK]
The cursor was blinking...forever! The sad thing was I had to switched the power off to stop everything. I am a newbie to Linux. Did I miss something? Somebody help please?!

This doesn't really mean there is a problem with the swap space. When linux startup process hangs at enabling swap space means next step (database startup) is hanging. It is just about to open the graphical console, but it freezes at this point because it is not able to startup oracle.
When installing, did you perform the execution of '/etc/init.d/oracle-xe configure' as the root user to configure the database?
You can still enter into your linux environment, as by now the networking settings are already active. So open a session by means of ssh or telnet if available and verify this startup phase. Just as a workaround, look for the /etc/init.d/oracle-xe file that was created by the XE installation. Rename it and set just an empty file instead, so you are able to open your console. Once fixed, rename it back to its original name.
In case of boot problems, use your rescue disk, mount your root file system and perform the outlined steps.
~ Madrid.

Error In Starting Jboss after installing OIM server

Hi All,
I have Installed OIM_Server(OIM 9.1.0.1) ON Jboss server(4.2.3) , I have 1 GB RAM m/c so have JVM setting as -XMS512m -XMX768 m. While installation of OIM Server, it showed the success message. But When I am starting the server , to perform post installation check, it is showing following error message .
Does anybody have any ideas what the problem is? Please provide the possible solution.
Thanks to All :)
Error :
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] Unable to retrieve orbjavax.management.InstanceNotFoundException: jboss:service=CorbaORB is not registered.
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] Linked java:comp/UserTransaction to JNDI name: UserTransaction
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] addEnvEntries
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkResourceEnvRefs
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkResourceRefs
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkMessageDestinationRefs
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkEjbRefs
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkEjbLocalRefs
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkServiceRefs
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] linkSecurityDomain
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] No security-domain given, using default: java:/jaas/other
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] Linking security/securityMgr to JNDI name: java:/jaas/other
2009-07-16 18:43:27,166 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] AbstractWebContainer.parseWebAppDescriptors, End
2009-07-16 18:43:27,401 DEBUG [org.jboss.web.tomcat.service.TomcatDeployer] Using session cookies default setting
2009-07-16 18:44:02,667 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] Running RemoverTask
2009-07-16 18:44:04,964 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] RemoverTask, PassivatedCount=0
2009-07-16 18:44:04,964 DEBUG [org.jboss.ejb.plugins.AbstractInstanceCache] removePassivated, now=1247750044964, maxLifeAfterPassivation=1200000
2009-07-16 18:45:11,465 ERROR [STDERR] Exception in thread "DefaultQuartzScheduler_QuartzSchedulerThread"
2009-07-16 18:45:11,465 ERROR [STDERR] java.lang.NoClassDefFoundError: org/quartz/core/JobRunShell
2009-07-16 18:45:11,465 ERROR [STDERR]      at org.quartz.impl.StdJobRunShellFactory.borrowJobRunShell(StdJobRunShellFactory.java:86)
2009-07-16 18:45:11,465 ERROR [STDERR]      at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:352)
2009-07-16 18:45:11,465 ERROR [STDERR] Caused by: java.lang.ClassNotFoundException: Unexpected error during load of: org.quartz.core.JobRunShell, msg=PermGen space
2009-07-16 18:45:11,465 ERROR [STDERR]      at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:560)
2009-07-16 18:45:11,481 ERROR [STDERR]      at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415)
2009-07-16 18:45:11,481 ERROR [STDERR]      at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
2009-07-16 18:45:11,481 ERROR [STDERR]      at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
2009-07-16 18:45:11,481 ERROR [STDERR]      ... 2 more
2009-07-16 18:45:11,481 ERROR [STDERR] Caused by: java.lang.OutOfMemoryError: PermGen space
2009-07-16 18:45:26,168 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] Running RemoverTask
2009-07-16 18:45:26,168 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] RemoverTask, PassivatedCount=0
2009-07-16 18:45:26,168 DEBUG [org.jboss.ejb.plugins.AbstractInstanceCache] removePassivated, now=1247750126168, maxLifeAfterPassivation=1200000
2009-07-16 18:45:26,168 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] RemoverTask, done
2009-07-16 18:45:33,247 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] Running RemoverTask
2009-07-16 18:45:33,247 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] RemoverTask, PassivatedCount=0
2009-07-16 18:45:33,247 DEBUG [org.jboss.ejb.plugins.AbstractInstanceCache] removePassivated, now=1247750133247, maxLifeAfterPassivation=1200000
2009-07-16 18:45:33,247 DEBUG [org.jboss.ejb.plugins.LRUEnterpriseContextCachePolicy] RemoverTask, done

I am getting these errors starting JBoss after installing OIM 9.1.0.1 on windows 2003 server with JBoss 4.2.3GA canany one please help me why.
19:04:04,468 INFO [WEBSTARTUP] Scheduler started
19:04:04,484 INFO [TomcatDeployer] deploy, ctxPath=/xlWebApp, warUrl=.../tmp/de
ploy/tmp5989105329966275493XellerateFull.ear-contents/xlWebApp-exp.war/
19:05:02,984 ERROR [STDERR] Exception in thread "DefaultQuartzScheduler_QuartzSc
hedulerThread"
19:11:18,359 ERROR [STDERR] Exception in thread "IdleRemover"
19:15:34,562 ERROR [STDERR] Exception in thread "Thread-15"

No start-up after installing 10.2

Hello All:
I cannot get my iMac to start up after installing OS 10.2
This - one of the last iMac CRT's - is my old computer which I have erased so I may give it to my niece for Christmas. The machine was running OS 10.2; it has 256MB, a 40 gig HD; it is a graphite slot-loader with a 600mhz processor (I believe).
Once I erased it, I began loading new software: it would take up to 10.0.4 and run, but once I installed 10.2 (from a disk I bought from Apple - white background, blue X) I would get a message to reboot in many languages after the gray screen. A few times I got code during start-up and the machine would freeze.
I ran the firmware updater and installed OS 9.2 thinking that would help. I reset PRAM. I reinstalled 10.0 from different disks I had - the ones which ship with the computer. I ran software updater. Nothing works.
The only thing I thought of doing was getting a copy of OS 10.1 to install after 10.0, but before 10.2. Does this make a diffrence? Can I just jump to OS 10.2? Why didn't the machine ask for the second disk when installing 10.2? Did I do something wrong when I erased the disk? What do I do next?
Thanks in advance for your help,
Rob
iMac Mac OS X (10.4.3)

Hi Rob, and welcome to the discussions.
The multi-lingual message to restart is called a kernel panic. This can be caused by software (third-party extensions or drivers) or hardware.
You said the machine was running 10.2 before you erased it to configure for your neice. If so, then your firmware was already up-to-date. Did you change anything on the iMac? New hard drive, new RAM, non-apple keyboard or mouse?
Prior to installing 10.2, you installed 10.0.4 (this isn't necessary, by the way; as long as the firmware is up-to-date, you can erase the hard drive and go straight to 10.2). Did you install any other software? When you installed 10.2, did you did an archive and install, or an upgrade?
I'd suggest starting fresh:
Step 1: Unplug all peripherals (except keyboard and mouse) and boot from your 10.2 install disk, then launch Disk Utility from the Install menu at the top of the screen;
Step 2: Erase the hard drive, and install the OS9 drivers (look for a check-box in the erase window);
Step 3: Have Disk Utility repair the disk (if it fixes any errors, keep running it until it finds no errors);
Step 4: Quit Disk Utility, and continue with the Installer.
Good luck!
Andrew

Errors starting JBoss after installing OIM

I am getting these errors starting JBoss after installing OIM 9.1.0.1 on windows 2003 server with JBoss 4.2.3GA canany one please help me how to resolve.
increasing the memory did not help.
19:04:04,468 INFO [WEBSTARTUP] Scheduler started
19:04:04,484 INFO [TomcatDeployer] deploy, ctxPath=/xlWebApp, warUrl=.../tmp/de
ploy/tmp5989105329966275493XellerateFull.ear-contents/xlWebApp-exp.war/
19:05:02,984 ERROR [STDERR] Exception in thread "DefaultQuartzScheduler_QuartzSc
hedulerThread"
19:11:18,359 ERROR [STDERR] Exception in thread "IdleRemover"
19:15:34,562 ERROR [STDERR] Exception in thread "Thread-15"

I am getting these errors starting JBoss after installing OIM 9.1.0.1 on windows 2003 server with JBoss 4.2.3GA canany one please help me why.
19:04:04,468 INFO [WEBSTARTUP] Scheduler started
19:04:04,484 INFO [TomcatDeployer] deploy, ctxPath=/xlWebApp, warUrl=.../tmp/de
ploy/tmp5989105329966275493XellerateFull.ear-contents/xlWebApp-exp.war/
19:05:02,984 ERROR [STDERR] Exception in thread "DefaultQuartzScheduler_QuartzSc
hedulerThread"
19:11:18,359 ERROR [STDERR] Exception in thread "IdleRemover"
19:15:34,562 ERROR [STDERR] Exception in thread "Thread-15"

Can't start Tomcat after installing Bea WorkShop for JSP

Hi,
I have been using Eclipse SDK Version: 3.1.2 Build id: M20060118-1600 and Web Tools Project 1.0.2 and Tomcat 5.0 and Tomcat 5.5 for about 2 months with no problems. But now I Can't start Tomcat after installing Bea WorkShop for JSP plug-in. I get "Server Tomcat v5.0 @ localhost failed to start". Any help would be greatly appreciated.

I installed BEA Workshop for JSP Version: 3.1.0
Build id: 536. I only wanted to install the plug-in to my existng Eclipse 3.1 / WTP application. The only option that I saw was to download the entire FullWorkshopFreeInstall-536.zip, which is 192,496 KB. During the installation, there is a screen that you can specify to only install the plug-in - and I selected that option. Today, I chose to uninstall the BEA Workshop for JSP and then I was again able to start Tomcat server. I then did a complete install of BEA Workshop for JSP into a totally separate location. My original Eclipse installation still works fine, but my Workshop for JSP Version (which is now a completely new installation) has the same problem with Tomcat that I reported with the plug-in. I am using j2sdk1.4.2_08 and have tried both Tomcat 5.0 and Tomcat 5.5. I have the same problem with both Windows XP Home Edition and Windows XP Professional.
Thanks for your assistance.
Ron

Can't Start Portal After Install

After downloading and installing the of evaluation Portal 4.0 SP1, I get the following message upon startup when I enter the system password that I entered during installation:
Starting WebLogic Server ....
The WebLogic Server did not start up properly.
Exception raised:
java.lang.IllegalAccessError: try to access method weblogic/management/internal/
Helper.preloadMBeanInfos()V from class weblogic/management/Admin
at weblogic.management.Admin.initialize(Admin.java:210)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:362)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:202)
at weblogic.Server.main(Server.java:35)
Reason: Fatal initialization exception
I even tried "weblogic" for the system password and I get the same message.
What password should I use to start the server?

I've followed the directions and am experiencing the exact same problem. Brand
new installation of Weblogic server 6.1 SP2 with examples. That install is working.
Then added Portal 4.0 SP1, updated the license file and I have the same issue
with the Illegal access exception resulting in the "Fatal initialization exception"....
Hmm!
[email protected] (Bowrat) wrote:
Below listed are the common errors you run into during installation
process:
- You need to have the correct version numbers of both the weblogic
server and the portal server. For instance the portal server 4.0 (eval
copy) will only run on WebLogic 6.1 SP1. So check the edocs for
supported platforms
- Make sure you have the installed the full version of the weblogic
server (including examples)
- Finally, you need to run the UpdateLicense.cmd file to update the
license.bea under ur Bea Root
Give it a shot after u have checked all of the above three - goodluck
- Bowrat
www.Bowstreet.com
Steve Anderson <[email protected]> wrote in message news:<[email protected]>...
From: Steve Anderson <[email protected]>
Newsgroups: weblogic.support.install
Subject: Can't Start Portal After Install
References:
NNTP-Posting-Host: 209.11.114.150
X-Original-NNTP-Posting-Host: 209.11.114.150
Message-ID: <[email protected]>
Date: 13 Feb 2002 20:25:53 -0800
X-Trace: 13 Feb 2002 20:25:53 -0800, 209.11.114.150
Organization: BEA SYSTEMS Inc
Lines: 18
XPident: firewall-user
Path: newsgroups.bea.com!209.11.114.150
Xref: newsgroups.bea.com weblogic.support.install:9600
After downloading and installing the of evaluation Portal 4.0 SP1,I get the following message upon startup when I enter the system password
that I entered during installation:
Starting WebLogic Server ....
The WebLogic Server did not start up properly.
Exception raised:
java.lang.IllegalAccessError: try to access method weblogic/management/internal/
Helper.preloadMBeanInfos()V from class weblogic/management/Admin
at weblogic.management.Admin.initialize(Admin.java:210)
at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:362)
at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:202)
at weblogic.Server.main(Server.java:35)
Reason: Fatal initialization exception
I even tried "weblogic" for the system password and I get the samemessage.
What password should I use to start the server?

Logic pro not starting up after install.

Ive tried to install Logic pro twice and both time it will not start up after install. can someone tell me what is the best way to install this program correctly? should i just pay apple more money to install the program for me?

I have exactly the same problem. Whilst 8.0.1 would hang during startup without displaying the splash screen intermittently 8.0.2 crashs every time a few seconds after displaying the splash screen.
Although my computer is almost 6 years old it is perfectly adequate for audio work. I hope this is fixed soon. Unimpressed with the quality control.

When does the test time start? After installing the program? Or only after opening the program? background: I accidently installed the Photoshop test version, but O am still busy with testing Premiere Pro.

when does the test time start? After installing the program? Or only after opening the program? background: I accidently installed the Photoshop test version, but O am still busy with testing Premiere Pro.

Freialeben7 the evaluation period begins when you first launch the Adobe application you are wishing to evaluate.

Anyone have trouble with IPad3 after installing OS6.1.3? keeps crashing

Anyone having trouble with iPad3 after installing OS6.1.3? Mine keeps crashing.

Mine seems to be just fine.
Try a reset,
Reset your iPad by pressing the 'Sleep' and 'Home' button at the same time for about 15 seconds or so. Your iPad will then go through a reset / reboot procedure and will be ready for use within about a minute.
Don't worry about doing this as you will not lose data or settings.
Good luck and do report back.

Trouble with 10g after Installing Grid Control

Main problem: after installing Grid Control and rebooting, I can no longer access my databases.
I have 10g installed on a fairly decent Windows XP machine. It was running okay, but I had two Oracle database instance processes running at 200mb of RAM each (of a total of 1 GB of RAM), so it was a bit bogged down, as is to be expected when running Oracle as a server on Windows.
I then installed Grid Control, which seemed to go okay, and another database as well. But once the install completed, and I gained access to the Grid Control version of the OEM for the first time, that's when things got wacky. Connecting to any OEM instance started taking anywhere from 2-10 minutes, everything was bogged down considerably, etc. I tried shutting everything down and rebooting, but now things are worse. OEM is timing out and not finding servers, listener is timing out, etc. I've tried manipulating a few things in Net Manager (I noticed that my LISTENER section didn't seem to contain any data at all, and my databases weren't listed in there either) with no result.
I've also had trouble with "host credentials" and being able to administer the databases within the OEM, even after implementing a fix I had found to add my user name to a "log on as batch job" local security policy.
Finally, I noticed that after installing Grid Control, when I run "sqlplus", I now see "Oracle91 Enterprise Edition" instead of the "Oracle10g" it used to show (and I never had anything but 10g installed on this machine!).
Here's what happens when I try to access my dBs:
-When I try to launch the OEM connected to any of the 3 databases I created (which were previsouly running), the browser just times out with "page cannot be displayed".
-When I run "emctl start <ANYTHING>" I get file/path not found errors, and a file path with both forward and backward slashes (starting after the "agent" directory):
C:\oracle\product\10.1.0\agent/<...etc.>
-When I try to test a connection to a service in Net Manager, I get this error:
ORA-12557: TNS:protocol adapter not loadable
I had to manually add my listener info and databases info(under Service Naming) in Net Manager, but everything appeared fine in Oracle Directory Manager (unfortunately, that doesn't help much, since this is just a general info tool).
I am nothing near a DBA and my knowledge is limited, so I apologize for not being more consise, but I'd be glad to elaborate if someone could tell me what they need to know.
Thank you,
John

Yes; thank you both. Although I had 1 GB physical and 1.5 GB virtual memory configured, running Grid Control seemed to completely kill all available resources.
I have removed GC and its related database and applications, and I can again conncet to my databases via Database Control. Thank you.
By the way, another issue has arisen, seemingly in the aftermath of installing GC: my OEM Database Control instances now time out after about 60 seconds, logging me out each and every time. I have cookies enabled, but this doesn't seem to be the trouble. Is there a Web setting somewhere that will kick users out of the instance at timed intervals?

Won't start up after installing iTunes update

After installing an iTunes update yesterday morning, I shut down my computer while I was gone all day. When I returned home and restarted it, I got the white Apple screen and gray wheel for an unusually long time, 30-45 seconds. Then the screen turned black and the following appeared:
Sept 13 09:33:05 com.apple.inbindd: Bad System Call
Sept 13 09:33:05 com.apple.inbindd: respawning too quickly! throttling
Sept 13 09:33:05 com.apple.inbindd: 9 more failures without leaving at least 60 seconds will cause job removal
Sept 13 09:33:05 com.apple.inbindd: will restart in 60 seconds
... some other prompts flashed up on the screen, too quickly to read what they said...this continues for at least 2 minutes before getting this message:
Sept 10 06:33:05 com.apple.inbindd: to many failures in succession
Sept 10 06:33:05 localhost:/ root#
And then nothing happens. I found a ProBook user on another board who got the same error after installing an iTunes update, and restarting in 'safe mode' seemed to help him. I tried to follow the same instructions but they must be different for the iMac--holding down the shift key while restarting made no difference.
iMac 17" Intel 1.83 GHz 512MB 160GB SD/AP/BT
Not being able to even get to the desktop--I am at a total loss. Please help!

The Safe Mode startup key combo is the same; Startup key combinations for Intel-based Macs, it just isn't working for you.
I suggest starting from the Install DVD that came with your iMac. Once in the Installer you will find tools in the Utilties menu. Using the Disk Utility try repairing the startup volume.

Trouble viewing PDFs after installing Mavericks

Prior to installing Marvericks, I had no trouble viewing the PDFs on this site:
http://dhrd.hawaii.gov/state-hr-professionals/class-and-comp/
Scroll to bottom and click on Class Specifications and Minimum Qualfiication Requirements.
An excel spreadsheet is downloaded.
Open the spreadsheet and click on the link for any PDF.
It seems that after installing Mavericks, the documents open but the text is unreadable.
I tried removing the PDF viewer internet plug-ins from the library as one member had recommended for a similar issue, but that didn't work for me.
Anyone know how to resolve this issue?

deleted.
I just get the giberish when I open your PDF reference.
Message was edited by: leroydouglas

Strange Window at start-up after installing Final Cut Studio 2

After installing Final Cut Studio 2, everytime I start up I get a window with the Final Cut icon in it And the following text:
Alert Title
Alert: something happened
At the bottom are two buttons:
Cancel and OK

I had the same thing, in my startup items was something called "alert" i deleted it... no more "nothings happened" a few people had this problem and have now solved it !
Yay i solved something for people!
jas

Powermac g4 shuts down during start up after installing Leopard and upgrade

I have a powermac g4 (agp), 1ghz, 120gig hd
I successfully installed Leopard. After install the updater came up so I updated the files. I think they were OSX update, quicktime, itunes, and a couple of others I can't recall. I was prompted to restart for updates and when I did it will get to the white screen with the grey apple and spinning wheel then it just shuts off. I have tried to start it up several times and it does the same thing each time. I can't start with the leopard disk since I can't get the dvd drive to open without it running. I've looked at other similar posts on this subject but don't see any that are similar to mine. Any help would be appreciated.

Hi, Claire -
I can't start with the leopard disk since I can't get the dvd drive to open without it running.
Couple of ways to work around that -
• Restart or boot the machine, immediately press the mouse button, keep it held down. This is a hardware command to the Mac to eject all removable media, which should open the drive tray. Insert the disk and close the tray, restart and press the C key.
• Try restarting or booting the machine, then immediately press the Option key (ideally before or simultaneous with the startup chime), keep it held down. This should bring up Startup Manager (a vivid blue screen with a few large icons showing). Once Startup Manager has fully loaded, press Command-. (Command-PeriodKey). This should open the optical drive tray. Insert the Leopard disk and close the tray; wait a bit for the drive to spin up; then click the circular arrow icon on the left. This will cause the machine to rescan the available buses and find the Leopard disk. Once that has displayed, click it to select it and then click the straight arrow icon on the right. It should now boot to that disk.
Article #HT1310 - Startup Manager: How to Select a Startup Volume
powermac G4 (agp/sawtooth), 1ghz....
The fastest G4 (AGP), aka "Sawtooth", machine shipped was 500MHz. If your machine is 1GHz, then it has either had a processor upgrade, or it is a later model. It helps us to know which it actually is. These articles can help you identify it -
Article #58418 - Power Mac G4: How to Differentiate Between Models
Article #42739 - Power Mac G4: How to Differentiate Between Models (part 2)
The fact that it may have an AGP graphics card does not make it a G4 (AGP), or Sawtooth, model - all G4's after the G4 (PCI) model shipped with AGP graphics cards, including the Quicksilver and MDD models.

Trouble starting CentOS after installing XE

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