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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Portwell motherboard: Boot-time fsck finds “unexpected inconsistency” due to system time

Although this question involves an embedded motherboard, serverfault seemed to me the best stackexchange forum to post to. My colleagues and I have been investigating this weird Linux boot problem ...
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10 views

grub can't find CentOS 7 [on hold]

My desktop was tri-booting between Ubuntu 2.04, CentOS 6, and Windows. I installed CentOS 7 in the space that CentOS 6 used, but update-grub doesn't result in the new CentOS showing up. I can only ...
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1answer
25 views

Windows 2003(!) Server won't boot: stuck at “applying security policy”

We have a (partly) decommissioned Windows 2003 server (of year 2000 vintage) which has been running fine until I had to turn it off for the first time in months due to a planned power outage. The ...
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0answers
35 views

Why does my machine not boot? [migrated]

I think this is a HW issue so maybe I'm in the wrong place, please redirect me in that case. History I have a Lenovo 9142 that has been installed with Ubuntu and running as a developer machine for ...
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14 views

Reset BIOS Password on Laptop [closed]

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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0answers
4 views

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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0answers
16 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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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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26 views

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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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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24 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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2answers
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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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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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227 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
75 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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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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62 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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19 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
55 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 ...
2
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1answer
71 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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1answer
37 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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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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1answer
37 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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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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31 views

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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259 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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57 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
29 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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3answers
52 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
60 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
396 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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51 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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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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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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24 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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1answer
58 views

Loading iptables rules at boot

i have added some rules to the iptables. I saved the iptables rules using the command iptables-save > /etc/sysconfig/iptables To apply the rules i did systemctl start iptables.service ...
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29 views

Start xend service automatically on boot fails

I am trying to auto-start xend and xendomain service automatically on boot as soon as I log into XEN-dom0 (on Ubuntu server 12.04 x64) so that whey i type : sudo xm list the hypervisor lists me all ...
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99 views

How to recover an Intel RAID 0 on a Rocks cluster distribution

We had a Rocks 5.5 distribution on our cluster and wanted to upgrade to 6.2. The "/export" partition was mounted on a Intel software RAID 0 array of 2 identical hard drives (HD) (/dev/sdb and ...
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1answer
34 views

Ubuntu ramdisk template

I've been working on a ramdisk template for running a complete root filesystem on the RAM of a baremetal server(over IPMI so no physical access) that boots over PXE. I used debootstrap to create an ...
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votes
2answers
1k views

Why does docker-machine clear data on restart?

I'm using Docker Toolbox on OSX. I've created a data volume container for storing persistent data: https://docs.docker.com/userguide/dockervolumes/#creating-and-mounting-a-data-volume-container. I ...
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1answer
77 views

CentOS 7 Installation: /boot naming scheme

I'm currently going through an installation of CentOS7 on an HP MicroServer Gen7. I'm installing onto a mirrored set of 240GB drives configured in hardware RAID1. When configuring my partitioning ...
0
votes
1answer
18 views

Unison on bootup

So i have unison running thru a config file by default. In here it applies the wait=watch function so it syncs automatically. but i wanted to run unison on boot, but i haven't been able to this this. ...
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votes
2answers
331 views

SuperMicro server won't boot after power cycle [closed]

We power cycled one of our SuperMicro machines and it does not boot anymore. It seems it won't even get to the BIOS loading stage and peripherals (VGA monitor, USB cable) are not detected. All ...
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1answer
21 views

external usb harddrive prevents startup of Server 2003

An external usb harddrive attached to a Windows Server 2003 (yes, we know it is old) seems to prevent the server from starting up (after a reboot or power recycle). I get the message: "Bootmgr is ...
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114 views

Linux disk moved on a different server won't boot

I have a server HP Proliant DL120 G6, with an installed and working Ubuntu 14.04. The partitioning is reported below. Now, if I move the disks on a very similar HP Proliant DL120 G5, in the same ...
2
votes
1answer
56 views

Correctly mounting SAN volumes at boot time

I have a system running Debian Wheezy (7.8) that connects to a storage volume exported via iSCSI using the open-iscsi (version 2.0) software initiator. The iSCSI initiator correctly reconnects the ...
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56 views

Solaris 10 Update 8, ZFS boot/root zpool and moving disks around

One of my OLD machines is running solaris 10 Update 8 (x86). It has a mirrored ZFS I use for "root zpool". Both disks are failing so I plugged a new disk in a USB port and attached the new disk to ...
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52 views

Intel server SC5300LX+SE7520BD2 won't boot after removing a second PSU

I have an intel server SC5300LX+SE7520BD2 with 1+1 redundant PSU (Delta electronics C46098-005). As one of the PSU had an amber led lightning, I decide to check the part-number and I did this by, ...
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1answer
94 views

PXELinux with WDS/DNS/DHCP

I've been reading up on setting up a PXELinux machine to run side by side with WDS on Windows and all the guides talk about setting up a DNS and DHCP server on the same server as the PXELinux. What ...