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• Restoring a Ubuntu Linux LVM drive

  - by user848106

  Scenario: I have a hard disk with a bootable sda1 partition and an Linux LVM. I seem to have corrupted the MBR? or Grub? not sure. I know it no longer boots and even with boot-repair and a Ubuntu live usb I was able to restore it. Following a "fix" with boot-repair I get "missing operating system" Can't i just reinstall grub or a new menu.lst? Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0007b68f Device Boot Start End Blocks Id System /dev/sda1 * 2048 499711 248832 83 Linux /dev/sda2 501758 625141759 312320001 5 Extended /dev/sda5 501760 625141759 312320000 8e Linux LVM

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• Error installing Arch Linux

  - by Garethj94

  So, I am trying to install Arch Linux on my Acer Aspire 4830tg, but I keep running into problems. Some background knowledge, I am trying to install Arch off a usb stick and I got the iso image using bittorrent. I am also trying to install it alongside of Windows 8 (which is already installed). So when I boot into Arch linux I get this error: :: Mounting '/dev/disk/by-label/ARCH_201212' to 'run/archiso/bootmnt' Waiting 30 seconds for device /dev/disk/by-label/ARCH_201212 ... ERROR: '/dev/disk/by-label/ARCH_201212' device did not show up after 30 seconds... Falling back to interactive prompt You can try to fix the problem manually, log out when you are finished sh: can't access tty; job control turned off I know that it will work if I run it on a virtual machine but whenever I try to install it on my laptop I keep getting this error. And since you can't register for the Arch forums without a Arch terminal to run their captcha command I can't ask this on their forums.

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• Exchanged HDD in MacBook Pro - OSX installation disk shows prohibitory sign

  - by Hedge

  I exchanged the HDD in my 2007 MacBook Pro and removed the dvd-drive because it was making terrible noise everytime I booted the MacBook. The new HDD is a Corsair Force F120 SATA SSD. Everytime I try to launch an OSX Lion installation disk or USB stick I get the grey prohibitory sign and the machine shuts down after a while. Since I didn't format the SSD beforehand there is still Windows 7 on it. It shows the white progress bar with the message "Windows is loading files" but never finishes it. I don't want Windows on that machine, just thought this fact may be important. Any ideas what is wrong?

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• ICS as guest in Ubuntu 12.04 host

  - by oshirowanen

  I have installed Android as per this guide as a guess os via VirtualBox: http://www.android-x86.org/documents/virtualboxhowto Using the following ISO: android-x86-4.0-RC1-eeepc.iso But I am unable to connect to the internet from within the android virtual machine. The host OS is Ubuntu 12.04 where the internet works fine. I have internet access via a usb wireless connection to the home router. All this is fine. If I install Ubuntu 12.04 as a guest, where the host is also Ubuntu 12.04. The guest os'es internet works fine out of the box. But for some reason, I can't get the above androids internet to work out of the box as the guest os. Anyone know what I am doing wrong?

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• Parsec: backtracking not working

  - by Nathan Sanders

  I am trying to parse F# type syntax. I started writing an [F]Parsec grammar and ran into problems, so I simplified the grammar down to this: type ::= identifier | type -> type identifier ::= [A-Za-z0-9.`]+ After running into problems with FParsec, I switched to Parsec, since I have a full chapter of a book dedicated to explaining it. My code for this grammar is typeP = choice [identP, arrowP] identP = do id <- many1 (digit <|> letter <|> char '.' <|> char '`') -- more complicated code here later return id arrowP = do domain <- typeP string "->" range <- typeP return $ "("++domain++" -> "++range++")" run = parse (do t <- typeP eof return t) "F# type syntax" The problem is that Parsec doesn't backtrack by default, so > run "int" Right "int" -- works! > run "int->int" Left "F# type syntax" unexpected "-" expecting digit, letter, ".", "`" or end of input -- doesn't work! The first thing I tried was to reorder typeP: typeP = choice [arrowP, identP] But this just stack overflows because the grammar is left-recursive--typeP never gets to trying identP because it keeps trying arrowP over and over. Next I tried try in various places, for example: typeP = choice [try identP, arrowP] But nothing I do seems to change the basic behaviours of (1) stack overflow or (2) non-recognition of "-" following an identifier. My mistake is probably obvious to anybody who has successfully written a Parsec grammar. Can somebody point it out?

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• Best alternatives to recover lost directories in FAT32 external hard drive?

  - by Sergio

  Hi: I have an 320 GB ADATA CH91 external hard drive. I guess it has some problems with the connector of the USB jack. The point is that in certain occasions it fails in write operations generating data losses. Right now I lost a directory with several GB's of very useful information. Since then I have not attempted to write to the disk any more. What tool would you recommend to recover the lost data? The disk is FAT32 formatted (only one partition) and I use both Linux and Windows. What filesystem format would you recommend to avoid future data losses? I currently only use this external hard drive in Linux so there are several available choices (FAT, NTFS, ext3, ext4, reiser, etc.). Regards, Sergio

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• Windows 8 Restore Problems

  - by Joe

  I created a Windows 8 system image backup on a separate drive before I installed Linux, and during the Linux installation process I accidentally wiped out Windows. I now want to restore my Windows 8 backup that I have on the separate drive. I created a repair USB stick and I followed the directions according to this article. After selecting the image on the hard drive, I get this error: "To restore this computer, Windows needs to format the hard drive." I don't know what this means! The drive partitions are different now then they were when I backup up, so I don't know if that matters. I re-installed Windows and I can restore my files from this backup, but I don't think this covers the registry, etc. I want a full restore. Does anyone know how to fix this problem, or how to restore in a different way? Thanks!

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• How to prevent hard drive from spinning down Windows 7?

  - by JL.

  I had a Western Digital External 1TB drive, which I was accessing via USB. I decided one day, that I would prefer to mount the HDD in my case, and access it via SATA interface. So I took it apart, and the actual mounting was a breeze. The only thing is, I think the device has some default power saving features, which means the device tends to stop spinning when idle for (x) amount of time. This creates delays when I am accessing the HDD. Is there anyway I can turn off these power saving features for this HDD?

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• Can you recover from a backup with bad blocks?

  - by Macbook-Recovery

  The hard drive in my Macbook recently gave up while using it on the plane (dual prop, lots of vibration unfortunately). I have a backup of its contents from a few weeks ago, but there are files that aren't included in it that I would like to recover. As it stands right now, I have it plugged to my macbook by USB. Snow leopard recognizes it, but can't mount it. Therefore, tools like Diskwarrior and Techtools do not work. I started doing a clone of it with Data Rescue 3, but after 7 hours of activity (20% through the drive), it has copied 130 GB of the drive but reports all of the data as "bad blocks". My question is this: Is any data recoverable if the clone is completely composed of bad blocks?

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• Network MP600 printer asking me to install new driver on laptop.

  - by user15003

  I have windows 7 home 32-bit on my desktop which is connected to my mp600 via USB. I have Vista 64-bit on my laptop. The MP600 is set for sharing and appears under printers in network under my pc's name. When I click on connect it says "The server for canon inkjet mp600 printer does not have the correct printer drivers installed........." I don't know what to do and it is really frustrating. It all worked fine before when I had XP 32 bit on my desktop

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• What's the quickest way to install Windows 7?

  - by SaultDon

  I am wondering what the quickest/fastest way to install Windows 7 would be? I've read that you can make a bootable USB with unetbootin, or load the ISO contents to a separate partition/hard-drive and boot from there to install. Then I seen a method using imagex to copy the files needed onto a new partition which can be booted from directly, it takes ~7 minutes + ~5 min for the initial boot... I haven't tried it yet but would like to know if anyone knows of anything faster? If you could provide some instructions (step by step) would be great! The imagex method provides a good tutorial for example.

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• Wired network on computer to wifi

  - by user329592

  I just got myself a wifi capable cell phone, but I dont have a wireless internet at home. I do have a wired unlimited internet connection on my computer, and I wonder whether there is any gadget that I can plug into my computer (maybe at the usb port?) with which I can turn my computer into a wifi access point? I mean, a dongle or something which will enable me to connect my phone to my computer's internet through wi-fi? Also, I dont know anything about networking, so would it be hard for me to set up a secure wifi point? Thank you for reading this question through. Hope I can buy some sort of adapter which is comparitively cheap.

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• Nearest PC equivalent to Mac Target Disk Mode?

  - by username

  Mac firmware has a special boot mode that allows you to offer its internal hdd to another computer as an external disk (you just connect the two machines via an IEEE 1394 cable). Only the second machine needs a functioning OS installed. Any good suggestions for something similar on the PC side of things? Block level access isn't important to me, I'd just like to be able to copy files off it. It doesn't matter to me if it uses Ethernet, IEEE 1394, or wifi - I just like having a quick way to access files on a client PC. Is there any single-purpose Linux distro specially designed to do this? It'd be nice to have something super simple, quickbooting, and small that I could install on a USB drive. I used to use Knoppix, but it's overkill as a Target Mode replacement.

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• Why is (free_space + used_space) != total_size in df? [migrated]

  - by Timothy Jones

  I have a ~2TB ext4 USB external disk which is about half full: $ df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sdc 1922860848 927384456 897800668 51% /media/big I'm wondering why the total size (1922860848) isn't the same as Used+Available (1825185124)? From this answer I see that 5% of the disk might be reserved for root, but that would still only take the total used to 1921328166, which is still off. Is it related to some other filesystem overhead? In case it's relevant, lsof -n | grep deleted shows no deleted files on this disk, and there are no other filesystems mounted inside this one.

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• How can I share a printer and files on a Windows network over wifi

  - by Jacques

  What is the easiest way to create this setup: WiFi internet router separate in one room. Study room: Laptop with USB printer connected with wifi. My room: Laptop connected with wifi. I want to be able to print from the "My room" laptop to the "Study room" printer, and also share files between them. What is the easiest way to do this? Note, the wireless router needs to be in a separate room for both laptops to be able to connect to it. I've tried configuring homegroups and stuff to do with IP addresses that I found on the internet but have had no success. I'm not an expert with PC's but I've tried hard so there is probably just some trick to do it. If someone can help that will be great.

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• Tool to fix video that's out of sync with audio?

  - by Javier Badia

  I'm looking for (preferably free) software for Windows 7 that will allow me to fix an AVI file that has audio out of sync with the video. I tried with Windows Live Movie Maker and VirtualDub and couldn't find out how to do it (if at all possible) on both of them. If any of those can help me, instructions for that would also be nice. Background: I have a RCA-to-USB capture card, which I'm using to transfer VHS casettes and stuff from a video camera to digital format. The problem is that the audio comes out heavily distorted. So instead I connected the audio out from the VCR directly to the computer's line in. This works, but the audio is out of sync, about half a second behind the video. I could spend time trying to fix this issuee, but I think it'll be easier to simply fix the video.

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• How to unmount a VHD in Windows 7. There is no unmount option.

  - by Triynko

  I mounted a VHD file in Windows 7 using the Disk Manager. Once mounted, there is no option to Unmount it. The only thing close to such an option that I can find is if I click the icon in the taskbar notification area that I use to remove USB devices... there's an option to eject the virtual hard disk. However, when I click that, it says that it's in use and cannot be ejected. Even though... it's not in use, I never even browsed the drive. The disk manager is closed... and the only open files handles to the drive (according to disk performance in task manager) is SYSTEM. Ejecting devices cleanly has been a problem since Windows XP, and it sickens me to see it persist into windows 7.

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• Forgot to unmount/eject external hdd, lost moved files. OSX

  - by balupton

  So I was using my mac with my external hard drive connected via USB. I moved about 10gigs of data to it (via drag and drop while holding command to move the files rather than to copy them). They moved to the drive alright, but as I was having some issues and finder crashed after the transfer, I was unable to eject the volume and later everything froze so I had to do a hard restart (hold the power button). When I remounted the volume (plugged the external hdd back in) it no longer had any of the files which I moved onto it. How can I recover these files, as it was a lot of data! Cheers.

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• Lock screen keeps making sound when screen is off

  - by row1

  I have my laptop (Asus UL20FT) on external power and hooked up to an external monitor. I keep the laptop lid closed and am using the 'second screen only' option. If you leave it on the lock screen for a short period of time the screen powers off. While the screen is off it keeps repeating a "duuuh duh duh" sound (sounds just like the device plugged in sound). The monitor is connected via HDMI and I have Microsoft and Logitech wireless USB dongles plugged in. How can I prevent this sound loop?

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• Configuring Server with no monitor

  - by Scandalist

  Sitting in front of me is an HP DL 380 Generation 4 with no monitor. I'd like to install an OS on the thing but for reasons obvious, I can't. I got excited when I found the ILO port on the back but unless you have a subscription it has limited functionality. I was thinking maybe there was some software out there that booted into some kind of remote access server? When I tested it with a monitor (A friends) I set the BIOS to boot from USB so anything I can load onto a stick should boot. Ideas? Hacks?

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• Recommend a wireless PCI card for Windows 7

  - by Dan

  I have a crummy RT2500-based 11g card which does work in Win7 with the Vista driver (3.2.0.0) but it dies about every two hours or so. Googling around has led me to conclude that Ralink drivers are basically borked, and that I need something else for a stable connection. Can anyone recommend a suitable wireless adapter? It needs to be: 802.11g - draft-N nice but not at all essential. PCI - I already have far more USB devices than can possibly be good for me. Very reliable. Money isn't an object within reason. All input gratefully received!

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• Should I install Windows 7 on a 3 years old PC?

  - by Jitendra vyas

  This is my PC configuration, Should I upgrade my Windows XP to Windows 7. Currently I'm using Windows XP SP3 32 bit. Now will I get same performance or better performance or bad performance if I install Windows 7 on this system? Or would sticking with XP be better? Memory (RAM): 1472 MB DDR RAM (not DDR 2) CPU Info: AMD Sempron(tm) Processor 2500+ CPU Speed: 1398.7 MHz Sound card: Vinyl AC'97 Audio (WAVE) Display Adapters: VIA/S3G UniChrome Pro IGP | NetMeeting driver | RDPDD Chained DD Network Adapters: Bluetooth Device (Personal Area Network) | WAN (PPP/SLIP) Interface Hard Disks: 300 GB SATA HDD Manufacturer: Phoenix Technologies, LTD Product Make: MS-7142 AC Power Status: OnLine BIOS Info: AT/AT COMPATIBLE | 01/18/06 | VIAK8M - 42302e31 Motherboard: MICRO-STAR INTERNATIONAL CO., LTD MS-7142 Modem: ZTE USB Modem FFFE CDMA :

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• Install mountain lion by using the .dmg from installer app

  - by Leonardo

  I already have a Mountain Lion Installer app, downloaded from Apple Store. Now, I would like to install ML on another machine I own. I didn't want to download it again, so I copied the .app to the other machine and try to run. Unfortunately due to some error about mac unable to run the .app I wasn't able to install. Most tutorial suggest to make a bootable USB starting by the installer InstallESD.dmg, found in installer .app. I would like instead to run the .dmg directly. So I have three 'propedeutic' questions: can I just mount and run the .dmg without making a bootable drive ? I do have backup, a TimeCapsule one to be precise. In case of failure, can I just use the previous backup, and restore to Lion 10.7 ? from 'Apple Store point of view', would my machine be recognized as upgraded and elegible for future update ?

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• Driverpack Solution makes a whole bunch of programs

  - by Markasoftware

  I am using Driver Pack solution 12.3 to update my drivers. I used it and installed 55 drivers. I noticed that there are now several dozen new entries in add/remove programs under the name Windows Driver Package - Intel hdc, Windows Driver Package - Intel System, and Windows Driver Package - Intel USB with the driverpack solution logo next to them. When I hit uninstall for any of these, it says all devices using this driver will be removed, and I am scared of uninstalling anything I do not know about. I have no system restore points before I updated my driver. Will these extra driver packages slow down my computer or take up extra disk space? Can I uninstall them safely? I am using Windows 8, so refreshing the computer is an option.

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• Windows XP restore point file from disk.

  - by Dragos Toader

  Suppose I copied a Windows XP restore point file to a USB memory stick. I copied C:\System Volume Information\MountPointManagerRemoteDatabase C:\System Volume Information\tracking.log C:\System Volume Information\_restore{45B5E8B9-949A-471E-999D-F381DA56A2D3} C:\System Volume Information\catalog.wci to F:\System Volume Information\ How can I restore this restore point? Can I fool the system into using that file (if I copied it back into the restore point folder)? From F:\System Volume Information\MountPointManagerRemoteDatabase F:\System Volume Information\tracking.log F:\System Volume Information\_restore{45B5E8B9-949A-471E-999D-F381DA56A2D3} F:\System Volume Information\catalog.wci to C:\System Volume Information\

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