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.

learn more… | top users | synonyms

26
votes
3answers
2k views

Is it safe to reboot a server open to the internet?

Specifically I have an iptables ruleset defined on a server running CentOS. Am I guaranteed / can I guarantee / how can I guarantee that when networking comes online (either at machine boot, or after ...
20
votes
7answers
62k views

What is the recommended size for a Linux /boot partition?

What is the recommended size for a Linux /boot partition? And is it safe to not have a /boot partition? I see some servers don't have a /boot partition while some servers have a 128 MB /boot ...
18
votes
5answers
1k views

Extremely fast booting server

I'm changing the way that our DHCP/DNS stuff works at work. Currently we've got 3 DNS servers, and a DHCP box. All of them are VMs. There's a circular dependency where stuff booting requires NFS, ...
14
votes
8answers
60k 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 ...
12
votes
3answers
966 views

I accidently zipped my whole server

Alright if anyone wants to play god and work miracles i'm down. So, i was given the task of making a script that found files that are older than 6 months, zipped them and then deleted them. On my way ...
12
votes
2answers
707 views

Is there a way to create a “one-time” boot entry in grub?

I have the following issue: I have a small server (Debian based) to which I can connect remotely (VPN/SSH connection). Now I want to change some boot options (in fact I want to migrate my root file ...
11
votes
5answers
9k views

How do I mount sshfs at boot?

Using a NAS box as 24/7 file server, I'd like to use sshfs to connect to it from an Ubuntu 9.04 desktop. Currently, I have this line in the desktop's fstab: sshfs#jldugger@storage:/mnt/HD_a2/ ...
10
votes
5answers
863 views

Recommended way to disable a service in Debian

Is there a "recommended way" to disable a service in Debian? (Disable = The service is installed but won't start automatically when the machine boots.) I know that you can update-rc.d -f service ...
10
votes
3answers
4k views

How to configure “On-Access Anti-Virus” for a faster boot?

I am in the process of trying to optimize the boot process of our 700 Windows XP workstations, we regularly have complaints about the start-up and login times on site workstations. Looking at this in ...
9
votes
8answers
20k views

How to repair/restore ubuntu 10.04 after 'sudo chmod / 777'

See Also: Why is “chmod -R 777 /” destructive? I changed file permissions recursively on the root directory / by executing sudo chmod -R / 777, and after that my system won't ...
9
votes
2answers
948 views

How much data does Linux read on average boot?

I wonder how much data in total does a freshly installed vanilla Linux system (like 32-bit CentOS 5.10) read in order to get to a virtual console shell prompt? You know, reading all the configuration ...
8
votes
2answers
11k views

IBM Server takes a long time to boot past UEFI to OS

I have a pair of IBM System x3620 servers. These servers do fine once they finally reach the point where the operating system takes over, but it takes them forever to get past the new-fangled UEFI ...
8
votes
2answers
837 views

Server 2008 R2 boot is at 2 hours and counting. What now?

This morning, we rebooted our Server 2008 R2 box. No problem, came right back up. Then we shut it down and let it install windows updates. While it was off, we added some RAM. Then we turned it back ...
7
votes
2answers
9k views

Run a bash script after EC2 instance boots

I have a script on an EC2 instance that remotely starts another instance. Once this instance has fully loaded (finished booting) I want it to automatically run a bash script, what would be the best ...
7
votes
4answers
6k views

Inaccessible_boot_device after installing KB2919355 on Server 2012R2

I have a server 2012r2 machine that I just installed KB2919355 (the mega 800+MB patch recently released for Windows 8.1 and Server 2012). Server is a Dell Poweredge R715. Disks are 2x500GB SAS in ...
6
votes
4answers
2k views

Server 2008 R2 requires 2 disks to boot

Weird one. I have a domain controller with Server 2008 R2. It is a hack job but is reliable. AMD system. AM2 6000+ Asus Crosshair MB. The server is utilizing 5 Sata ports for Hard disks of assorted ...
6
votes
1answer
2k views

combine partitions to one disk image

I have 3 images. Each image was done by cloning (by dd) a partition (these partitions formatted using ext3 file system). One partition is boot-able with GRUB1 (CentOS) How can I combine them to one ...
6
votes
6answers
12k views

How to troubleshoot slow Windows XP boot?

I have a Windows XP x64 SP2 machine that used to boot up really quickly, but now takes a very long time. If I enable the /sos boot switch it gets to the bit where it says: 2 system processors [8191MB ...
6
votes
1answer
329 views

Providing normal users(non-root) with initialization and shutdown auto-run capabilities

I'm hosting an experimental/testing Linux box, running Debian Wheezy 7.4.0 distribution. Different users log into the machine over ssh to their accounts and are allowed to run the development tools ...
6
votes
4answers
166 views

control startup order of several servers

I'm looking for recommendations on how to control the startup order of a rack of machine should they all need to be booted back up. In more detail: Group1: DHCP/DNS/LDAP Server Group2: NFS ...
6
votes
1answer
782 views

SAN booting Oracle VM from a UCS blade

We have an Oracle VM Cluster that we are provisioning on a Cisco UCS B series blade chassis. It has 2 fabric interconnects (FC0 and FC1) provisioned to the (3) Oracle VM service profiles and it is set ...
6
votes
3answers
637 views

Timing issues with OpenVPN and NFS mounts (Debian Squeeze)

I'm trying to mount NFS filesystems over an OpenVPN link on Debian Squeeze. The problem is that the default layout of init scripts and such tries to mount the NFS filesystems before bringing up the ...
5
votes
3answers
3k views

How to free up space on RHEL6 /boot safely?

I am trying to do yum update on RHEL 6 box and I am getting this error message Transaction Check Error: installing package kernel-2.6.32-279.9.1.el6.x86_64 needs 10MB on the /boot filesystem ...
5
votes
3answers
3k views

Getting NFS clients to retry mount if NFS server down when client boots

I have an NFS server that several clients mount. I am using the following in my /etc/exports on the server: /content *(rw,no_root_squash) and on the clients in my /etc/fstab I have: ...
5
votes
2answers
3k views

Find out which Group Policies take forever to complete at boot

I want to analyse which group policies are inflating the bootup time. What's the best way to do so? Something like gpresult including timestamps/periods would be really helpfull!
5
votes
4answers
39k views

How to boot ISO image using gpxe and memdisk?

I have a repository of an ISO images (many different OS installers in ISO format) under http://myrepos/*.iso. I would like to boot from that repo using gPXE (with/without memdisk if necessary) and ...
5
votes
2answers
2k views

What to do with suddenly unreachable non-logging EC2 instance?

I have an EC2 "micro instance" running Canonical's Ubuntu 10.04 LTS. Has been running for 6-9 months now, infrequently rebooted (once every few weeks at the most). I just did what I thought was a ...
5
votes
2answers
11k views

how to install OS remotly using Supermicro IPMI?

I have detected server that I can access using supermicro IPMI. I need to reinstall the OS (linux centos 5) because the current OS cannot boot (kernel panic problems). how can I do that?
5
votes
2answers
207 views

Moving an existing Linux into an LVM

We have a server with an existing Linux installation (CentOS 6) + boot partition on disk 1, and an empty disk 2. What we'd like to setup is this: One disk (1 or 2, doesn't matter): The main system ...
5
votes
2answers
1k views

IBM x3650 will not boot from USB

Hello serverfault community, and thank you in advance for your time. Summary: I have an IBM x3650, which I bought secondhand (eBay). I am trying to install and run VMWare ESXi 5.5 on it via a USB ...
5
votes
2answers
3k views

Linux boot on a raid1 software raid?

I am trying to convert my single disk boot to a raid1 boot So far here is what i have: I sucessfully create the raid 1 as degraded with the new drive alone, I copied all the data on it I can mount ...
5
votes
4answers
3k views

How do you make a WinXP bootable USB drive?

How do you make a WinXP bootable USB drive? I've seen a bunch of instruction here on ServerFault but they are specific to Vista or Linux, so again - I'm using WinXP. I've also tried unetbootin, but ...
5
votes
1answer
12k views

Server 2008 stuck in reboot loop “Configuring Updates: Stage 3 of 3”

Our server performed some updates last night and this morning we came in to find it stuck in a boot -> "Applying System Configurations" -> "Configuring Updates: Stage 3 of 3. 0%" -> reboot loop. Safe ...
5
votes
2answers
5k views

Dell PERC 4 (PowerEdge 2850): Unresolved configuration mismatch between disks(s) and NVRAM

We had an extended power outage (almost four hours); now I have a Dell PowerEdge 2850 server which is giving me this error (from a PERC 4e/DI) on boot up: All drives are listed in the PERC ...
5
votes
3answers
1k views

Broadcom BCM5716 Hangs on CentOS 6 Boot

I have a fresh CentOS 6 installation on a Dell R310 server with a Broadcom BCM5716. The onboard NIC is causing the boot to hang for some reason. Welcome to CentOS Linux Starting udev: udev: starting ...
5
votes
3answers
2k views

Ubuntu 10.04: disk check at boot takes a long time

Every so often at boot time the disk checker runs. It completes ~70% very rapidly, and then takes about an hour to complete the remaining 30%. I know I can cancel it, but presumably it runs for a ...
4
votes
2answers
23k views

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.
4
votes
3answers
110 views

Moving Windows 2003 boot+system partition

I have a Windows 2003 server with: - C: (15 Gb boot+system) on an old PATA disk - G: (20 Gb empty) on a SCSI hardware RAID - H: (220 Gb datas) on the same SCSI RAID I want to move C: to the RAID. I ...
4
votes
8answers
12k views

How can I get my License Key from a boot CD?

We recently acquired a server that's been in use for a while, but no associated software, logins, etc. We attempted to blank the administrator account password, but that didn't work. We also tried ...
4
votes
2answers
7k views

Where/when does a (Debian) 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 ...
4
votes
2answers
3k views

How do I redirect the kernel console output on Ubuntu 10.04

When I reboot my Ubuntu 10.04 nodes, I'd like to be able to see the kernel boot messages when connecting to the IPMI interfaces using Serial Over LAN mode (ttyS0). What do I need to do to be able to ...
4
votes
2answers
878 views

Using FlashCache on /var on startup

I would like to have FlashCache cache my /var partition however I can't seem to get it to play nice upon bootup (IE: not really sure how to do it). I'm not sure if I need to modify the initramfs/use ...
4
votes
2answers
385 views

Burn in 50 Computers without installing an OS on each

I am burn in testing 50 propritary PCs for a customer. I am having some issues figureing out how to burn these machines in using my customers requirements. I must use Passmark Standard 6.0 or >. I ...
4
votes
3answers
22k views

How do I chain boot from grub to syslinux?

I am expanding my rescue usb flash disk. The USB's partition is bootable, and I have installed GRUB to the MBR of the jump drive. It works pretty well - I can boot Freedos and run some utilities,and I ...
4
votes
1answer
560 views

How to set systemd service dependencies?

During CentOS 7 system boot nginx start fails with the following error: 2014/08/04 17:27:34 [emerg] 790#0: bind() to a.b.c.d:443 failed (99: Cannot assign requested address) I suspect this is ...
4
votes
6answers
5k 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 ...
4
votes
3answers
1k views

Network booting from PXE

I need to use a network boot server. However, the DHCP Server is pointing to the wrong boot image filename and server. I can't change the DHCP Server itself, since that is controlled by another ...
4
votes
1answer
509 views

Slow boot and dns doesn't work

I don't understand what happened because i didn't change anything in system for quite a long time. Now system boots too slow and when it's booted - dns requests don't work. I can ping remote hosts by ...
4
votes
1answer
1k views

How to load the environment variables at boot time before X11 on Ubuntu Precise?

Using Ubuntu Precise 64 bit, I'm facing a problem that I'm unable to solve and that I'll try to describe below: I'm using a console mode program (let's say abc) that uses Go, NodeJS, Java and Scala. ...
4
votes
5answers
3k views

Windows boot iso file without press any key

I'm trying to make an iso file which will boot without any key-press from the user. In Windows iso files, when booting from a cd, there is a message "press any key to boot from cd" which will wait for ...