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• Unable to login into CentOS

  - by Rendl

  I had setup a multinode cluster using CentOS with VMware yesterday. Today when I reboot the nodes I get the below error on startup. "there is a problem with the configuration server status 256 centOS" (/usr/libexec/gconf-sanity-check-2 ) I am unable to login as root or any user as the screen is frozen. The solutions online is to change the permissions for some tmp files. My problem is I am unable to access the terminal as I cannot login. Also on reboot I do not have any recovery options in CentOS. I only see command line GRUB. I am new to linux and Hadoop.Pls help asap.

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• Backing up to smaller drive

  - by Dave

  In a few hours I'll have a new 500GB Sony laptop, filled with the usual Sony rubbish which I'll promptly be replacing with Ubuntu or Crunchbang or something. However, first I want to make a full clone of the drive (including recovery partitions), should I wish to return it to Sony or sell it on in its factory state. The problem is that the only backup drives I have are less than 500GB - the biggest I have is 250GB or so! So I need to backup and compress on-the-fly. What's the best way to do this? Presumably dd piped into gzip would do the trick, or does anyone have any other suggestions to accomplish this?

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• Kill program after it outputs a given line, from a shell script

  - by Paul

  Background: I am writing a test script for a piece of computational biology software. The software I am testing can take days or even weeks to run, so it has a recover functionality built in, in the case of system crashes or power failures. I am trying to figure out how to test the recovery system. Specifically, I can't figure out a way to "crash" the program in a controlled manner. I was thinking of somehow timing a SIGKILL instruction to run after some amount of time. This is probably not ideal, as the test case isn't guaranteed to run the same speed every time (it runs in a shared environment), so comparing the logs to desired output would be difficult. This software DOES print a line for each section of analysis it completes. Question: I was wondering if there was a good/elegant way (in a shell script) to capture output from a program and then kill the program when a given line/# of lines is output by the program?

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• windows 7 haning and after shut down it does not start

  - by ads

  My windows 7 samsung i5 second gen laptop started hanging all of a sudden. I recovered it to factory image, it ran fine for 1 day then again started hanging. When i shut it down, i didnt start, it showed the msg bootmgr missing, then i used my samsung recovery cd and installed windows 7 home. When again i shut it down it didnt bootup. Just a blank screen. System repair is also not able to repair. Then i installed windows 7 ultimate. Aftr shutting it down it again ahowed the blank screen.. cant think of any other option, I am in a fix. Could anyone tell me what to so. Machine is just one yr old.

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• Can software operation damage an SD card?

  - by Borek

  My SD card has a broken boot sector and the tools I've tried say that it's not repairable (I've tried TestDisk, DriveRestore Pro and Easeus Partition Recovery). The card was in my Android phone and at one point, it simply shut down and I had to reboot it. After I rebooted it, the SD card was not recognized and since then I've tried to recover it (I don't want to format the card as it contains some data I'd like not to lose although it's nothing critical). My question is, can some software error in Android, or a sudden crash of a system, damage the SD card? Or was it the other way around, the card first died and it brought the system down?

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• How to find dom0 name from hosted domU

  - by svigan

  I'm actually testing RHEL 5.3 with Xen between two servers in order to have a disaster recovery solution. So I'm playing with moving my domU from one dom0 server to the other server. Unfortunatly when somebody else move the domU I don't have any clue where my domain is hosted. I'm wondering where I can't find my dom0 name with inside domU. I'm looking for something like the gzonename command on a solaris sparse zone. I check inside /proc/xen but I don't see anything special except the dom0 kernel release. Does anybody know a wait to find this ?

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• Fastest booting Linux ditribution on a live-cd

  - by Avindra Goolcharan

  I'm looking for a linux distro with the following: Boots quickly, as fast as possible. Has expected tools such as file browser, a web browser, etc. Doesn't need to have extraneous recovery stuff such as partition editors, and what not. These are the tools I have and use already: ophcrack Ultimate Boot CD for Windows (UBCD4Win) chntpw (Offline NT Password and Registry Editor) Hiren's BootCD gparted or Parted Magic Ubuntu nubuntu Any and all suggestions are welcome :-) The primary objective is to get a quick booting linux distro that I can grab / delete / move / copy files with. Currently, I prefer using ophcrack, it boots in (relatively) fast and I can manipulate files well. The one that takes the longest is ubuntu of course.

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• Can I recover files on a disk With 5% of start of disk completely wiped (overwritten with 1s)

  - by ARA

  Recently a virus attacked my pc and cleared 5% of my hard disk which has one partition I viewed the disk in a hex viewer program like active undelete ,cleared the virus data and overwrote it with 1s I want to recover a large file that is about 10gb, but no recovery tools seem to be able to recover any files. I want to know ,in theory, is this file recoverable ? I think that files are fragmented, researched about NTFS File System and i understand cluster information are just saved in MFT File ? Is there any way to recover file without a MFT structure ?

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• Sorting Files into Subfolders based on EXIF Date

  - by honestor

  I have a huge directory from a HDD recovery that contains 70000+ JPEG files. I tried playing around with some AppleScripts, that I found, but had no luck. I already installed EXIFtool, which might be useful for this task. The current directory structure is as follows: dir001 - file0001.jpg ... - file9999.jpg dir002 - file0001.jpg ... - file9999.jpg ... dir070 - file0001.jpg - ... - file9999.jpg The files mostly have EXIF Data, but sometimes there are Files without metadata. Now I hope to be able to sort and rename these files into folders based on the date: 1999 - 1999 01 31 - 1999_01_31_-_22_59_59.jpg 2000 - 2000 05 20 - 2000_05_20_-_21_59_59.jpg - 2000_05_20_-_22_59_59.jpg I figured Applescript/Automator might come in handy for this, however every other solution would be welcome, too!

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• Why does yum index get corrupted?

  - by TomOnTime

  Occasionally yum's cache gets corrupted and we see errors like this: error: db3 error(-30974) from dbenv->failchk: DB_RUNRECOVERY: Fatal error, run database recovery error: cannot open Packages index using db3 - (-30974) error: cannot open Packages database in /var/lib/rpm The workaround is rm -f /var/lib/rpm/__db* and then the next "yum" command regenerates the data. My question is: what is likely to be causing this? Is there some common task that ignores locks or has other problem that causes this? We have hundreds of CentOS machines and there is no pattern to which see this problem. It could be a "one in a million" issue, which at large scale is seen often. NOTE: I realize this is a very "open ended" question, but if an answer finds the cause, I will go back and turn the question into something more canonical that directly relates to the specific issue.

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• Trouble loading an ISO

  - by crocyson

  I've created a boot disk and ISO image with paragon. I boot up the Virtual pc with the disk in and I get to my recovery page. When I am supposed to select an ISO image? My Virtual PC doesn't acknowledge any of my physical hard drives on my host PC. I've also tried copy/paste the files into my datastore and they do not show up. I've tried the option during the set up to start with the ISO but again I am not able to browse to my external hard drive that I have stored the ISO on. VMWare will acknowledge it and say that it is connected but I can't browse to it. Am I doing something wrong? I created the back up disk and ISO image on the external with paragon.

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• Best Linux Distro for web services (Nginx & node.js) on laptop: Compaq 6710b?

  - by tomByrer

  I haven't used Linux in 5+ years, aside from d/l occasional system recovery CDs off DistroWatch, so I don't know the current landscape. Related postings on this forum are several years old & may not relate to my hardware (Compaq 6710b laptop, Core2Duo Centrino). Requirements: Use the Compaq 6710b laptop's WiFi out of the box enough frequently updated pre-made packages for web hosting & development (Nginx & node.js are biggest concerns, everyone has Apache & PHP, & I'm not crazy about building from source) prefer be easy enough to use, but outside help available (so a small user-base distro is only OK if the community is active & a major disto's packages are compatable) configuration easy to transfer to outside web hosts. You have actually installed/used recommended disto (don't have to be expert) TIA!

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• Why is my portable WD MY PASSPORT drive is not recognized?

  - by kloop

  My "MY PASSPORT" (Western Digital) portable drive is not recognized OSx. It used to be recognized, but not anymore. It does not appear in /Volumes. The hard drive is recognized by a Linux machine. I am not sure what happened -- any ideas how to fix that? Thanks. EDIT: ` #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *750.2 GB disk0 1: EFI 209.7 MB disk0s1 2: Apple_HFS Macintosh HD 749.3 GB disk0s2 3: Apple_Boot Recovery HD 650.0 MB disk0s3 /dev/disk1 #: TYPE NAME SIZE IDENTIFIER 0: FDisk_partition_scheme *1.0 TB disk1 1: DOS_FAT_32 MY PASSPORT 1.0 TB disk1s1 `

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• Windows 7 startup problem

  - by elaine

  I purchased a computer a few weeks ago which runs on Windows 7. I was just watching a show on Hulu when it shut off. I don't know if I accidently pushed the power button with the keyboard or what. When I turned it back on my first screen says F5 key for HDD recovery. I pressed the F5 button and the screen goes to a Windows setup (EMS enabled) screen which then goes to my regular Starting Windows. After that one I get the box with x:/windows/system32/cmd.exe-startnent.cmd. If I don't press the F5 button I go to a screen which tells me Windows failed to start, a recent hardware or software change might be the cause. It gives me two options- Launch Setup REpair(recommended) or start Windows normally. I've pressed enter to choose the first choice but it does nothing but brings me to the same screen. Anyone have any ideas?

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• Disabling certain JBoss ports

  - by Rich

  We are trying to configure JBoss 5.1.0 to be as lightweight and as secure as possible. One of the parts of this process is to identify and close any ports we do not need. Three ports that we have outstanding but don't believe we need are: 4457 - bisocket 4712 - JBossTS Recovery Manager 4713 - JBossTS Transaction Status Manager We don't think we need any of these features (but could be wrong). Bisocket seems to be a way for JMS clients behind a firewall to communicate with JBoss. We hardly use JMS now and when we do, it is very unlikely that we will need this firewall traversing ability. I am less sure about whether we need the two JBossTS ports - I am guessing these are used in a clustered environment - we aren't clustered. So my question is, how do we disable these ports (and associated processes where possible), or if we need these ports, why do we need to keep them open?

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• Disk Management

  - by Mars

  I'd like to know what's with all those unnamed drives. I've always thought they are what they say they are (recoveries and what not), why are there so many of them? and why do they all say 100% Free (i.e. they're all empty!). If that's the case, what happened to my recovery? Info: I'm on Dell Inspiron 7520 Windows 8 Single Language (Had Kali installed on SSD a couple of days ago, now I've just deleted that and will install Kali on VM on SSD, that's drive (S:). Screenshot (don't have enough reputation): https://www.dropbox.com/s/y8a1mfkycd5grhq/Screenshot%202014-06-08%2012.06.38.png

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• How to solve the "Bootmgr is missing" problem on Windows 7 machine ?

  - by Purushotham

  Hi, I bought a Dell Laptop recently which has Windows 7 operating system in it. I did not get the operating system CD/DVD. Recently I got a problem while starting the machine. I really don't know what happened. It says "Bootmgr is missing. Press Alt+Ctrl+Delete to restart". I have Dell recovery CD. But I don't know how to resolve this issue. Can anyone help me ?

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• Keyboard/Mouse not working when windows vista has reached login screen

  - by Jonas

  I currently have a problem with a system (vista home premium, 64bit). USB kbd/mouse will not work when windows has booted/loaded their drivers and Im stuck at the login screen with no working input devices. None of the available boot options after F8 will boot to working kbd/mouse. They work in the bios setup and they seem powered all the way until a few seconds before the login screen. Legacy USB devices is also enabled in the bios. They also work with the recovery dvd, but I am unable to start the device manager to check or uninstall the mouse/kbd drivers. Cant get devmgmt.msc nor devmgr.dll (with rundll32) to work. System repair does not detect the problem and there are no available restore points (it was disabled). Any ideas?

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• Clean Install Windows on a Acer Aspire Laptop with a Hybrid Drive

  - by user1325179

  I'd like to do a clean install of Windows 8 on my Acer Aspire laptop (Aspire M5-481PT) with a hybrid drive. Physically, there seem to be two hard drives (an HDD and an SSD). So when I try to clean install Windows, I am asked to pick a drive. The HDD has five partitions (some seem to be recovery related), and the SSD has two partitions. Which partitions should I delete (if any), and onto which drive should I install Windows 8? And then how can I instruct Windows 8 to use the HDD-SSD combination as a hybrid drive? Edit: Currently, the operating system seems to be installed (from the factory) on the HDD. The SSD is invisible in File Explorer. It is only visible in disk utilities. I'm betting I need to install Windows to the HDD, and then point Windows to use the SSD for the hybrid relationship. Also, the SSD is about 20 GB. The HDD is about 450 GB.

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• Why would an ext3 filsystem be rolled back on a Debian VM running in VirtualBox after loss of power to the host

  - by Sevas

  A Debian Virtual machine runs as a Guest VirtualBox VM. It's filesystem is EXT3. The host system loses power and after booting up the host system and guest VM, I find that the VM's filesystem has been rolled back to a previous state, losing changes made to the filesystem some time before losing power. The operations that were rolled back had been fully completed before the loss of power (files fully copied, file handles closed, etc.), but it's possible and even likely that other write operations were occuring on the VM at the point of the crash. So I am trying to figure out if it's the filesystem recovery process that rolls back filesystem operations after encountering corruption post power loss, or is it possibly related to VirtualBox and the way it ignores flush requests for performance gains by default (discussed here) Are there any other factors that would result in the filesystem being rolled back after losing power?

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• How to prevent Windows 8 of erasing GRUB?

  - by dirleyrls

  I'm doing dualboot with Ubuntu and Windows 8 on my DELL Laptop. EFI is enabled, secure boot is not. My partitions are GPT. Everything seems to work for some time. After some normal use, GRUB stops working. The "ubuntu" EFI entry is still there on top of everything else. But the computer boots directly into the Windows Bootloader, skipping GRUB. Any clues on why is that happening or how can I prevent that? My current partiton setup is: - /dev/sda1 NTFS Windows recovery - /dev/sda2 FAT32 UEFI boot (with boot flag) - /dev/sda3 unknown (msftres flag) - /dev/sda4 NTFS Windows Drive C - /dev/sda5 ext4 /home - /dev/sda6 ext4 / I usually reinstall GRUB through chrooting from a Live Session and doing a apt-get install --reinstall grub-efi-amd64.

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• What do BCU.exe and BCUService actually do?

  - by ChrisF

  I've got a Gigabyte G32M-ES2L motherboard with an Intel Core 2 Duo E7500 2.93GHz CPU running Windows XP SP3 (fully up to date). Today when I booted the machine my firewall (Sygate Personal Firewall) warned me that BCUService.exe wanted to make a call out to the internet. Wondering what they were I did a Google search and while I found out that these programs weren't malware, I didn't find out what they actually do. The information seemed to boil down to: Part of Browser Configuration Utility Auto-recovery Service from DeviceVM, Inc. This program is not important for your system process, but should not be terminated unless suspected to be causing problems. Source So before I remove them from my system does anyone know what they actually do and its it worth them taking over 4Mb of memory?

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• Deleting Windows 8 install

  - by Yann4

  I have a windows 7 pc, and I had installed windows 8 on an SSD, so it was the only partition on that SSD. I've now realised that I never use it, so I went to uninstall it and followed these steps. The PC now boots into 7, as expected, however I can't delete or format the drive that has windows 8 on it. The format dropdown selection is greyed out, and I tried to just simply delete all of the files and use the disk as is, but as windows 8 isn't there, I no longer have rights to delete all of the files, apparently. The drive in question has 3 partitions, one that I made for the win8 system, and 2 smaller system-created partitions (one 300MB recovery and 1 100MB EFI) How do I go about formatting the drive?

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• missing windows/system32/config/system

  - by Faruq Sandi

  i know it is common problem, but not its so strange. problem: common missing windows/system32/config/system what i do next: put hdd to another pc and boot from it, it is succeeded but without warning window after startup that says like "windows has recovered from serious problem". and than i put back hdd to previous pc. tadaaa!!!! missing windows/system32/config/system is happening again! now i am trying repair this problem with recovery console from CD. i hope it will successful. someone can explain this? what should i do?

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• Portable VirtualBox with Ubuntu on two machines

  - by eactor

  I have VirtualBox Portable installed from vbox.me. I moved it on a USB drive and added a virtual Ubuntu. It works fine on the computer I created it, but moving the usb drive to a different the Ubuntu does not start any more. I already changed location descriptions in <machine>.vbox and the VirtualBox.xml. When pressing Shift while starting the GRUB loader comes up, so I tried the recovery mode. Same here – startup freezes and nothing happens. Any hints for me? Last to happen in log file: 00:00:54.986 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=06aac000 w=640 h=480 bpp=32 cbLine=0xA00, flags=0x1 00:01:06.361 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=00000000 w=720 h=400 bpp=0 cbLine=0x0, flags=0x1

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