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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140 views

debian unable to automount partition at boot

I have a single usb drive connected to my server, and I am unable to get it to automount at boot time. If I manually execute mount -a it mounts correctly. my fstab is as follows: proc /...
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1answer
687 views

Empty /boot/grub/grub.conf of a remote server, how to recrete it from recovery?

My remote server (running CentOS 6.6 x64) can't boot anymore. Using the emergency recovery (a LIVE CD) i can actually look that /etc/boot/grub/grub.conf and it's empty (0 bytes). I don't know why, ...
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1answer
676 views

Windows 2012R2 hyper-v guest diskless - boot from iscsi guide?

I am attempting to build a generation 2 W2012R2 hyper-v server guest that, configured with no disk or vhd , will select it's iscsi o/s disk via Microsoft dhcp and boot Windows 2012 R2. Note that I ...
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1answer
343 views

RHEL7 server won't boot after restart - “Failed to start LSB”

I have a RHEL7 server that has been running for the past couple weeks, but it won't come back up after a restart now. I have daily snapshots, but all of them seem to be affected by the same problem. ...
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2answers
4k views

What is the correct way to install software RAID 1 in CentOS 6.4?

I'm going to install CentOS 6.4 on HP ProLiant ML310e Gen8 server. This server has fakeraid controller so i decided to use software raid. The problem is that i don't know how to correctly install GRUB ...
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4answers
4k views

booting FreeBSD 9 from USB stick: boot error

I am trying to boot FreeBSD 9 from a USB stick that I created following the official guidelines: dd if=FreeBSD-9.0-RELEASE-i386-memstick.img of=/dev/da0 bs=64k Booting fails with a simple 'boot ...
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3answers
278 views

Attaching SATA device disturbs boot order

I'm running a Supermicro X7DCA board in a NAS server. Whenever I plug in a sata disk the boot sequence goes out of order. This is a problem, because it is running headless. I've had this problem ...
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1answer
31k views

Bootrec /FIXBOOT vs Bootrec /FIXMBR

According to Microsoft here is what Bootrec /FIXBOOT does: "This option writes a new boot sector to the system partition by using a boot sector that's compatible with Windows Vista or Windows 7" ...
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1answer
301 views

Conversion from Basic failed

Hi I am in an emergency situation right now. I DO have full backups of everything, but I am trying to avoid a complete reinstall of the OS and AD. I have a simple server with one drive that was set ...
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2answers
265 views

Broken ubuntu installation doesnt booting

My local Ubuntu 7.10 dev server was unresponsive the other day so I rebooted it and now I can't boot into it. I can boot into the Live CD and mount my hdd so I can have a look at the logs and what ...
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0answers
207 views

Sun Netra 240 not booting to ALOM

I inherited a Sun Netra 240 with no OS installed (indeed, with no hard drives). I did some googling, and came up with a few manuals, all of which I downloaded: Netra 240 PROM Guide Netra 240 ALOM ...
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2answers
2k views

Can we set ulimit in /etc/sysconfig/init file to apply the value at boot time

I need to have the ulimit value set at the boot time to all my services. I have values set in /etc/sysconfig/limits.conf but these values are not applicable during the boot time and it takes 1024 as ...
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1answer
309 views

Bootable USB backup

I would like to create a copy of my running Linux installation onto a USB 16 GB pen drive. The current system is a basic ATX PC used as a headless server on a remote location. I would like to have a ...
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1answer
891 views

Windows 8.1 stuck in Automatic Repair boot loop - Proxmox VE [closed]

I installed Windows 8.1 64B in a VM on Proxmox-VE. It was running fine for a few days until it needed to be rebooted (updates). First I tried reinstalling the OS which worked, until it needed to be ...
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2answers
607 views

Create an MBR on secondary plex

I have a HP Proliant ML350 g6 server running windows 2008 std R2. This server had two hardware arrays in it. One array was a raid 0 with 1 physical drive running raid 0. The other array is 5 physical ...
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2answers
990 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 ...
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2answers
5k views

Red Hat Kickstart: How do I get a DVD-ROM based install to work?

I'm trying to create a "Magic DVD" that will install and configure RHEL 6.2 just the way we want it the first time, every time. Here's the process I've been trying to use, just to prove the concept: ...
3
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1answer
53 views

mbr and boot sector overwritten with structured yet very odd data

I work for a web-hosting datacenter. One server was having issues with its RAID, and we were attempting to reboot into single-user mode to repair a read-only /tmp Upon rebooting, the server wouldn't ...
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2answers
5k views

FreeBSD 10 won't boot to ZFS root after power failure

While installing new hardware today, I involuntarily disconnected the power to one of our servers. This server is running FreeBSD 10 with Root-on-ZFS as offered by the installer. It has a total of 36 ...
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3answers
1k views

Dell Optiplex 960 will boot from CD but not DVD media

Dell Optiplex 960, stock, BIOS A07, no BIOS updates available from Dell's web site. Has HDD connected to SATA0, and DVD-ROM connected to SATA1. Machine will not boot from any DVD+R or DVD-RW media in ...
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0answers
774 views

Ubuntu on EC2 boot error after dist upgrade to 14.04: disk drive for / is not ready yet or not present

I just upgraded my Ubuntu 11.10 EC2 instance to 12.04, then to 12.10 and finally to 14.04 using the do-release-upgrade command each time. I arrived at 14.04 and the instance will not boot now, it ...
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1answer
5k views

ESXi 5 Hypervisor fatal boot error

For over 2 years now I've been running ESXi 5 just fine from a pen drive. I recently had to move the server to a new location and started seeing an issue. Once the system starts to boot, I get: '...
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5answers
10k 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/ /mnt/...
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1answer
481 views

How to create a bootable ISO image from a disk snapshot

I've taken a disk snapshot of my Ubuntu VM from Amazon EC2. The snapshot is a ZIP archive of the whole disk. I've downloaded and then extracted the snapshot. Now I would like to create a bootable ISO ...
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1answer
261 views

Debian server not booting after software RAID-1 array degraded

So I have a Debian 7 server with 3 hard drives. Its RAID-1 is basically configured this way: md0: sda1, sdb1 --> / (root) md1: sda5, sdc1 + sdb5 (spare) --> /data (sdc1 is on a SSD, and sda5 is ...
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2answers
6k views

VMware ESXi dual / triple boot on a test machine

Has anyone tried to setup a dual or triple boot (ESXi 5.5, Linux, Windows Server 2012R2) machine? This is for an app and controller card testing environment - at the moment we're dual-booting Linux/...
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2answers
1k views

Xen Server, Ubuntu VM increased disk size, now will not boot

Citrix XenServer 6.2 Running Ubnutu Server 14.04 It had a 300GB disk attached, using XenCenter I increased the disk size to 500GB, planning on using gparted to resize the partition. Now it will not ...
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2answers
467 views

Windows 2008 R2 Boot-from-SAN Migration Methods?

We are running Windows Server 2008 R2 Enterprise on a Cisco UCS B200 M3 blade server that is diskless. Currently, we are going through a EMC SAN lifecycle/upgrade. I need to perform this migration ...
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1answer
149 views

rc.local, call commands sequentially (one after finishing the other)

I was expecting that in rc.local, If say I call program P1 in one line and then P2 in the following line, P2 would only be executed after P1 (on which it depends for successful execution). This is the ...
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1answer
144 views

Installing boot manager to a raw LVM physical volume

Is it possible to install some boot manager to disk with raw physical volume inside (i.e. no partition table)? I tried LILO and LVM volumes became inaccessible (due to LVM structures corruption). Boot ...
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1answer
439 views

WANem doesn't boot after install

I'm using WANem live cd (based on knoppix) to perform network bandwidth tests. In order to keep the current configuration, I've installed it on hard disk (using the gui installation tool provided ...
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1answer
316 views

Single user mode boot stuck

I have an old Ubuntu box with an unknown root password. It boots fine in regular mode, but it gets stuck when booting to single user mode: For searchability, the last few lines are: Begin: Running ...
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1answer
313 views

Freshly installed CentOS does not boot from Dell's Perc H700 RAID

Installed a fresh CentOS 5.10 installation on RAID5 provided by Perc H700 Integrated RAID, however the system fails to boot. Checked the system via recovery CD, and noticed that CentOS 5.10 now uses ...
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2answers
2k views

Windows Server 2008 R2 with Mirrored Disk Booting to Black Screen

I've got a Windows Server 2008 R2 device with 2 disks formatted as Dynamic Mirrored disks booting to a black screen. Upon booting the machine goes through the standard checks and then gets stuck at a ...
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1answer
108 views

Dynamic dependencies in systemd

I am trying to figure out how to specify dynamic dependencies for systemd that are specific to the current instance@. In the [Service] section I can use EnvironmentFile= to load in variables using the ...
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1answer
154 views

Is there a way in winPE to continue booting from local hdd?

In a lot of linux distro installers or livecd there is an option to continue booting from local or another media device without rebooting the system. I can not find anything like that for winpe 5.1. ...
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2answers
3k views

Can PXE boot of Hyper-V VMs be disabled?

Hyper-V virtual machines have the ability to PXE boot. Obviously, PXE boot raises some security concerns. The problem is, unlike a typical physical machine's firmware, there isn't an obvious way to ...
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7answers
100k 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 ...
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2answers
111 views

/boot partition filled - updates will not complete

my last update failed because /boot did not have room for the new kernel (or so I guess). Can I safely use rm to blow away the old vmlinuz.*-generic? Thanks
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1answer
50 views

Auto starting rc at startup

So here are the steps i am following . So i add a conf file inside /etc/init.d/myconffile And then to get System start/stop links i have to use the command sudo update-rc.d myconffile defaults 99 ...
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5answers
33k views

Ubuntu - dhcp server 'not configured to listen on any interfaces'

I'm at my wits end on this one; I have tried for hours to get this to work, but I'm stumped. Hope one of you can help. :-) I'm trying to get dhcp3-server to work on Ubuntu. It's installed, and ...
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2answers
321 views

Upgrade key not present?

I have a DELL PowerEdge R520. On boot, just after loading the RAID Controller, I get a weird message: "Upgrade Key Missing! An upgrade key was present on a previous power cycle, but it is not ...
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1answer
2k views

How to access a system with write permission after file system check fails?

I created three new partitions, but after a reboot, the system is being dropped to a shell: /dev/mapper/group-newpartition: clean, 11/655360 files, 276620/2621440 blocks [FAILED] An error occurred ...
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2answers
113 views

Boot to CD image over network [closed]

I have multiple diagnostics CDs that I want to avoid making twenty copies of for the sake of time and convenience. I figured a good way to do this would be to boot an image of the necessary CD over ...
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1answer
151 views

How to avoid PHP errors during server reboot?

I found a PHP error in my server log that says: [02:09:27 UTC] PHP Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000] [2002] No such file or directory' in /var/www/...
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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 ...
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0answers
149 views

'Boot' folder was accidentally deleted from WinServer 2008 R1

Unfortunately, the 'Boot' folder in Windows Server 2008 R1 (not R2!) has been erroneously deleted. Now I'm seeng a message that Windows can't be started. Fortunately, I have a copy of the whole disk ...
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0answers
1k views

How to debug why systemd is idling and is not going on with the boot process?

I am trying to create a PV instance for AWS EC2. The template VM is based on CentOS 7, which is using systemd. The disk layout is two partitions: /boot (/dev/xvda1) and LVM2 (/dev/xvda2). The root ...
2
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4answers
11k views

Superblock last mount time is in the future

Yesterday, I encountered a confused problem. During booting, the system complained that the superblock last mount time is in the future and ask me to fsck. I have used Debian Squeeze for months and ...
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0answers
182 views

Verify architecture of kernel file

Note: I am NOT interested in the currently running kernel, but on a kernel that I am going to boot and which is in a file in the filesystem. I am going to boot a new kernel. I have prepared grub.conf ...