Booting is the initial set of operations that a computer system performs when electrical power is switched on. The process begins when a computer that has been turned off is re-energized, and ends when the computer is ready to perform its normal operations.

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Installing Centos 7 on HP N54L

I already opened a thread here. But no one could help me. I have an HP Microserver N54L (Gen7). I started with Debian and switched to Scientific Linux 7.1, now I want to install Centos 7.2 After ...
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Reset BIOS Password on Laptop [on hold]

I have an Acer Aspire laptop and i recently updated the BIOS through Windows 7. I did this in an attempt to reset the BIOS password as I no longer remember it. The problem is that it no longer ...
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Linux stuck on boot up, windows bootloader overwritten [migrated]

Ahoi. I recently installed debian on my windows 10 machine, and have essentially bumloved my entire machine, it seems. I installed Debian using the 8.3.0 DVD Image from the official site, and the ...
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7 views

Unable to boot openSUSE or SLES12 from plain installation on Gen9 server

I am installing software on a brand new HP DL120 Gen9 server. This is going to be just a high-performance testing machine. I wanted to install openSUSE Leap. Intelligent provisioning won't recognize ...
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6answers
6k views

Backing up my data causes my server to crash using Symantec Backup Exec 12, or How I Came to Loathe Irony

I have a Dell PowerEdge 2850 running Windows Server 2003. It is the primary file server for one of my clients. I have another server also running Windows Server 2003 that acts as the core media ...
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7 views

Server can't boot, showing main process (206) terminated with status 127

The system is Debian 7.0. Booting in recovery mode fails with messages shown in this screenprint: How can I solve this issue?
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How does Grub Stage1, exactly, access/load stage 2? [migrated]

This is my first ever question, I have put this question in front of Red Hat Instructors but didn't find any satisfying answers. I'm using RHEL/CENTOS6, GRUB Legacy 0.97, and have consulted heaps of ...
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1answer
1k views

Server 2012 (R2) - mirroring the boot drive… what is the state?

I struggle to find modern documentation here. So far we have been booting our servers from the main RAID controllers. Worked nice, but not we get the first of a new generation that hs in the back 2 ...
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2answers
2k views

Windows 2008 upgrade hangs on black screen of death; can't boot from media

Over the weekend someone attempted to upgrade Windows Server 2003 to 2008 on one of our machines. Not sure what happened, but it didn't work and now when booting up after the little green bars, the ...
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3answers
1k views

PXE bootable browser [closed]

I would like to have a system that boots using PXE and only runs a single application: A graphical webbrowser with a hardcoded homepage that loads upon opening. I could use the Knoppix Terminal ...
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6 views

Sun M4000 — how do I reset the F/W password on the bootable domains

I have just gotten assigned to working with an Sun M4000 system of which I know very little about. Nor does anybody else within the company. I can get into the initial service module (XSCF).... But ...
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17 views

Create a new Linux boot disk using a reference disk?

I need to build a Linux boot disk for a system, but assemble the disk using a different system than the one the disk is for. I have a known-good "reference" disk: is there a way to selectively clone ...
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0answers
182 views

Replacing failed RAID 1 drive on Windows Server 2008 - new drive not bootable

I'm trying to replace a failed RAID 1 drive in Win Server 2008 R2 Foundation and am running into difficulty. See the image from Disk Management: Disk 0 is the good drive from the original RAID ...
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2answers
4k views

Does memtest86+ test memory which is used to run itself?

One of the common server failure scenarios is bad DRAM, sometimes even when ECC memory is used. memtest86+ is one of the most useful tools to diagnose DRAM problems. As it loads itself at the start ...
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2answers
620 views

Need informations about RAID5 behaviour in XenServer 5.5

I've detected an I/O error in my partition /dev/sdd3 which is a part of 4 devices assembled with RAID5. Now my server is in degraded mode with only 3/4 sync drives. I have a boot partition ...
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3answers
233 views

Booting from RAID5 device

I have an xenserver and I wonder to know if it's possible to boot it from a RAID5 software partition.
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3answers
51 views

When server is booting high load?

From CSF statistic my server load in 30 days is never higher than 3, I have 8 core cpu and 3 sites with 10 000 unique visits per day. When I reboot my server, and I log in into console, when he is ...
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3answers
3k views

Use GRUB/GRUB2 to PXE boot OS image

Asked this in stackoverflow but they recommended I post this here: Here is the situation I am in: I currently have a Windows drive that boots XP. The BIOS does not support PXE booting so this is out ...
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2answers
2k views

How to build USB “floppy” pen drive launching Windows 2008 Setup from USB DVD

One of my server motherboards supports booting from USB, but only from "USB Floppy" or "USB ZIP Drive". I followed various guides creating an active, bootable partition on the USB Pen Drive with the ...
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0answers
11 views

New Swap Drive - Linux Hangs during Boot

An application checked the swap space during install and required it to be the same amount as ram. So i added a new disk (Server is a VM) and done the following: swapoff /dev/mapper/ol-swap vgcreate ...
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1answer
47 views

CentOS /boot is full even after removing previous kernel

During several months before every update system action I need to clean up /boot directory because it is full. I had removed old kernels as described here (How to free up space on RHEL6 /boot ...
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0answers
20 views

Ran chkconfig but crond not starting on reboot on Amazon Linux

I am trying to get the cron daemon to start on reboot on an instance of Amazon Linux (Linux version 3.14.57-34.46.amzn1.x86_64). I have run: $ sudo chkconfig crond on If I run: $ chkconfig --list ...
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2answers
1k views

Execute a script while boot up in RHEL7

One of my server reboots every sunday and monday morning, whenever the server is up I need to do a service restart. Actually I call a script to execute itself (everytime manually). What I want to ...
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2answers
1k views

Linux xen directly boot windows domu?

I have the following situation: got a new notebook with Windows7 pre-installed (sda1 with boot partition, actual OS in sda2), one physical disk (sda) created an extended partition (sda3), inside ...
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49 views

How to change the boot order if Two boot partitions exist on the Linux Machine

I have an open vpn server running on my Ubuntu server 14.04.I took the backup of hard disk /dev/xvda (which includes the boot files) to an img file using the dd command. Machine A dd if=/dev/xvda ...
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43 views

Encrypted LVM stops when mounting swap

I have configured a disk with LUKS this way (Ubuntu server 15.10): Boot partition Rest partition (LVM group) LVM data -> Encrypted (pass) -> ext4 /data LVM root -> Encrypted (pass) -> ext4 / LVM ...
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1answer
68 views

Replaced SATA controller, software RAID (mdadm) stopped booting: grub rescue> no such disk

I have a relatively old server machine which has no SATA ports on the motherboard (Dell Precision Workstaion 650). Also have a cheap FakeRAID controller (VIA VT6421 Chipset) and two Seagate 3TB drives ...
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18 views

restart client after download .img file from PXE

I want to install pfsense using pxe. In Windows 7, I have installed the Tftpd32 software and set it up (conf file is below). The client machine downloads the image file (pfsense.img) successfully ...
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1answer
50 views

Docker daemon doesn't start on boot on CoreOS

I have a vanilla install of CoreOS (835.9.0) and it doesn't start the docker daemon on startup. It only starts when I SSH in and do eg docker ps. How can i make the docker daemon automatically start ...
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1answer
34 views

dracut-pre-trigger rd.md=0 removing md raid activation boot fails

The system is Fedora 22, recently upgraded from Fedora 21. The remaining kernel from Fedora 21 boots. The two kernels installed after the upgrade fail to boot. The system is an Intel S-5000 PAL with ...
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1answer
35 views

FreeNAS Flash Drive Corruption

The flash drive that had FreeNAS on it was unplugged while the system was running. Now when I start the system, I get the following error: GRUB loading . . Welcome to GRUB! error: unknown ...
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0answers
17 views

Debian server reboots after every login

I have a Debian Wheezy vps on the cloud. Today I tried to login using the VNC console provided by my vps service provider but everytime I login the server automatically reboots after 5 seconds! Has ...
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How to list services/daemons started at boot _and_ check their loading order

I want to be sure in what order services are started during boot process in Debian based systems (Debian Squeeze in particular). Thanks in advance.
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0answers
27 views

Kernel config options explained

Can anyone explain what the following options from my centos 5.9 box do CONFIG_HAS_IOPORT=y CONFIG_HAS_DMA=y CONFIG_GENERIC_HARDIRQS=y CONFIG_GENERIC_IRQ_PROBE=y CONFIG_GENERIC_PENDING_IRQ=y ...
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0answers
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solaris requested cylinder is beyond range of BIOS geometry

Title says it all. I'm a Windows guy, and a bit out of my element here, but a client has an old Solaris machine hosting a Database. The machine turned off for a yet as unknown reason (probably power ...
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239 views

How to use systemd-firstboot.service?

I'm making an image of Debian Jessie. On boot the system has no /etc/machine-id file. This causes some problems with the journald that doesn't start. I've found that in the systemd repo: # This ...
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53 views

How to reset the ConditionFirstBoot in systemd?

How to make the system think that it's the first boot again? Need that for some fast testing without reflashing the image.
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1answer
27 views

Is it possible to script rebooting to another OS once?

In Server 2012 R2 you can hold Shift when you choose to reboot from the start menu it brings you to a screen that lets you choose which OS you want to boot to if you have multi-boot set up. This ...
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1answer
4k views

Stuck at grub prompt after a default CentOS 6 installation

I am having a very strange problem installing CentOS 6 that I've never encountered before. I've followed these same steps thousands of times before, but within the past couple weeks I've had two ...
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3answers
50 views

Is there a way to know what services run on a Windows server without logging in to this server?

Hi I just started working as an intern and they use Windows servers for very specific tasks (converting .docx files) that are way harder on their other servers. But now I had to make that program run ...
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1answer
56 views

HP ProLiant DL380 Boot Issues

I've tried researching intensely to find out why every time I try to boot my server, my monitor that I use to see what I'm doing to the server, seems to say "Out of Range". I have Ubuntu installed ...
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1answer
360 views

HP ProLiant ML350 G6 won't power on

I pulled a couple of ML350's out of storage for a training lab, and to my chagrin only one boots. When I plug the good ML350 in, the NIC light flickers green briefly and it powers up normally. When I ...
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50 views

HVM AMI do not boot, no console output

I prepared HVM EBS backed ami in such steps: Created new EBS volume and mount it to existing hvm instance. Created one partition on it and mout it. Installed basic system with: yum -c ...
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0answers
47 views

Error reading boot configuration data on primary hard drive Windows Web Server 2008 R2

I have a root server on Hetzner which is running Windows Web Server 2008 R2. I am facing an issue with boot up. The server hangs up for some reason and when I issue an automated restart from Hetzner's ...
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8answers
103k views

How to make a bootable USB drive out of a bootable DVD or CD

Is there a "universal" way of how you can make a bootable USB drive out of a bootable dvd or cd? What makes a USB drive bootable? What makes a dvd and cd bootable? For example there is a program ...
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0answers
56 views

AWS pv-grub don't see config file

I created ami from scratch: ec2reg -n centos7 -b '/dev/sda=snap-96a520e3' --kernel aki-499ccb20 -a x86_64 but pv-grub can't find config file: Thread "Idle": pointer: 0x20f0002050, stack: 0x2070000 ...
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0answers
23 views

How can I make sure my virtual serial ports are available at bootup

I am using a Serial port re-directer and Clone functionality done through a python script. With Virtual Serial ports that are created via socat. How do ensure that these Virtual Serial ports will be ...
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2answers
6k views

How do I get a detailed vista bootlog?

How can I get a detailed report of what/when things are getting loaded during vista boot? The basic reports found in the event viewer are @ too high of a level. Someone must've needed more ...
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4answers
2k views

Move Win2k3 to new hardware: STOP 0x0000007B (How can I get PERC drivers installed?)

I have an ancient celeron-based Windows 2003 SBS server on an old Dell machine. It has a very basic IDE non-RAID setup. The server is so old, it takes about 30 minutes to boot up and log in. A new ...
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2answers
11k views

Where/when does a Linux system change the console display mode?

I'm installing Debian Wheezy (7.0rc1) on a box of mine. For reasons I won't go into here, I don't want the framebuffer to be used for the console display during boot (nor afterwards). To avoid this, I ...