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• How to upgrade a single instance's size without downtime

  - by Justin Meltzer

  I'm afraid there may not be a way to do this since we're not load balancing, but I'd like to know if there is any way to upgrade an EC2 EBS backed instance to a larger size without downtime. First of all, we have everything on one instance: both our app and our database (mongodb). This is along the lines i'm thinking: I know you can create snapshots of your EBS and an AMI of your instance. We already have an AMI and we create hourly snapshots. If I spin up a new separate instance of a larger size and then implement (not sure what the right term is here) the snapshots so that our database is up to date, then I could switch the A record of our domain from the old ip address to the new one. However, I'm afraid that after copying over the data from the snapshot, by the time it takes to change the A record and have that change propagate, the data could potentially be stale. Is there a way to prevent this, and is there a better way to do this than I am suggesting?

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• Windows partition and double operation system

  - by metdos

  I bought a notebook, Sony Vaio VPC-EB1M1E and I want to make partition and use both windows-7 and Linux(Ubuntu). Should I make partition from inside windows, or should make partition using recovery discs? There is windows-installer version of Ubuntu, should I use it, or should I install it separately? Thanks.

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• "This CPU is not compatible with 64-bit mode." - Installing Windows 7 Ultimate 64-bit on a netbook with a 64-bit Intel Atom CPU

  - by galacticninja

  I tried installing Windows 7 Ultimate SP 1, 64-bit on a netbook (Lenovo IdeaPad S110), which has the Intel Atom N2800 (1.86 GHz) as its processor, but I get the following error message when the Windows 7 installation DVD is loading: It says "Attempting to load a 64-bit application, however this CPU is not compatible with 64-bit mode". The Intel Atom N2800 is a 64-bit CPU according to its webpage. I am wondering why the Windows 7 installer shows this error message, despite this. Is there something I must configure first before installing Windows 7, 64-bit? Or is the netbook not compatible with a 64-bit OS? I am trying to format the netbook and install Windows 7 Ultimate 64-bit, instead. Other details: The netbook has 2 GB RAM. The netbook initially had Windows 7 Starter (32-bit) installed.

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• How to install Ubuntu, Windows XP and Windows 7 from scratch as triple-boot system

  - by simon

  I'm currently running Windows XP, but have ordered Windows 7. I want to keep Windows XP on a separate partition, and install Ubuntu as well. In which order should I install the OSs, and is there anything differing from an ordinary single-system install I should keep in mind? For example, does the order of partition make any difference? If I want to have the system drive as "C:" drive in both Win XP and Win 7, what should I do?

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• How does an OS communicate with other hardware components?

  - by Jack

  How can a program running on a CPU (mostly OS) access other PC hardware? Such as Graphic card, HDD and so? From what I read, in DOS, this was done using BIOS calls, specifically the INT instruction. But, the INT instruction should only jump to the certain space in RAM. So how can some program stored in RAM access other computer hardware, when the CPU can only access RAM, and receive interrupts? Does Windows use INT instructions as well, or is there a new way to communicate with the hardware?

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• FoxPro 2.6 DOS on Windows 7 64-bit

  - by Rolando

  I support a company that has a very old, mission critical, FoxPro for DOS 2.6 (FPD) application. For variuos reasons the company didn't adapt/migrate their app, which, ironically, has been running even better under Windows XP (and 32-bit Win7) because the OS allowed new features like more reliable networking, distributed printing, email integration. Unfortunately for this company, most new machines now come with a 64-bit version of Windows 7, which is incompatible with their FPD app. I know this time the writing is on the wall: the only long-term solution is to migrate their app. But I wonder if anyone can suggest a temporary alternative path, which doesn't involve either: downgrade 64-bit Windows to 32-bit, or run the app on a virtualized 32-bit XP

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• linux recommendations for older pc

  - by jdamae

  Hi, I'm new to Linux and I am interested in installing the OS on an older computer I have. I want to setup a webserver and install php, perl. My pc is an older HP Pavillion a255c, Intel Pentium 4 with 512ram. I will probably add some more memory later. This pc is more like a sandbox than anything, but would like to get quickly started with the OS. Is there a particular flavor of linux I would need to download based on my older computer? Any recommendations? I was thinking about Ubuntu but not sure what version to go with. Thanks for your help.

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• Favorite Linux Variety and why?

  - by Cenoc

  Right now I have Fedora dual booted with Windows 7. The reasoning behind that is just because windows was the first OS I ever used and has some essential software, and Fedora is the first linux distribution I tried, but I would like to hear the argument for other distros, as I may be looking to switch. Thanks ahead of time.

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• OSS Router firmwares

  - by Cherian

  DD-WRT, Open WRT , Tomato or Third-party firmware projects ? What are the compelling reasons to choose between these? I used to be a great DD-WRT fan until I realized that the author was deceiving users by publishing it as a OSS, but made it very cumbersome to download the source and change it (requires you to download GB’s of source files) .Also their bandwidth monitoring feature was part of the paid version, which IMHO is a killer. Having said that, DD-WRT just worked. And I think that’s great..

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• What's the difference between hardware and software interrupt?

  - by robotrobert

  I'm gonna sketch my understanding of both. I've googled around but i'm not sure about my knowledge. Please correct me! Hardware interrupt is generated by the operation system event scheduler to reassign the cpu time for another process. Is this true? Software interrupt can be generated from a running program who wants for example to read a file, and for that we need to reassign the cpu for the appropriate operation system call. Is this true? Is there other kind of software/hardware interrupts?

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• what can I do with an old but working PC [closed]

  - by fskreuz

  I have an old Dell optiplex GX240 on Pentium 4 1.8Ghz and 256MB Ram (or was it 512MB). It's still in working condition but it's getting slow for me and i wanted to optimize it. I just want that old box to be usable even for simple desktop use (email, surfing, chat). I also have to note that my parents prefer use it over a laptop for some reason. Treat it as a "box-type netbook". unlike the other threads that they all prefer sending away or use as file server, firewall and that, i am looking for suggestions on how to keep it usable as the main PC. any suggestions? OS perhaps?

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• Safe BIOS upgrade run from external USB-HDD and not native OS

  - by ecoologic

  I have a Toshiba M200 laptop which came with Windows Vista. After buying it, I replaced the OS with XP and recently I swapped the internal hard disk with a bigger one where I only have Ubuntu. So now I can boot XP from the external USB hard disk. There's a BIOS update available (2.3 against my 1.8) which I'd like to install and there's also a version for XP. Is it "reasonably" safe to install this upgrade for Windows XP (despite the original OS was Vista, the laptop model is the right one) from my external USB hard disk with Win XP?

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• DOS Batch file to find "new" files by date

  - by Todd McArthur

  My PC has entered an infinite BSOD loop - but I do have access to a safe-mode command prompt. I'm trying to get an idea of "what changed" that might have triggered this. e.g. I might have gotten a virus, or an app update went belly up. I'd like to thus see which files were created/modified in the last few days/week or at least the *.exe, *.dll, *.com, *.bat etc. I thought I was ok with my Batch-fu but I'm stumped on how to write a quick batch file/command that would list the files for me. REM This will find the files, but the results are all muddled REM all EXE files, reverse sort by date, recursively through sub-directories dir *.exe /O-D /S What I'd really like is to find all (executable filetypes) that were created/modified in the last 3-7 days. Can anyone point me in the right direction?

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• How to dual OS 32-bit/64-bit Windows 7 Ultimate.

  - by Cyril Horad

  I have a problem with regards to my nVidia driver not running on 64-bit. I decided to install both 32-bit and 64-bit on my ASUS K42JC (4GB RAM upgrade) in order to function the nVidia on the 32-bit. My question is, how could I make my laptop run on either 32-bit or 64-bit OS. What options I am suppose to use, a single, double, or triple partition? From an answer: Well. When I installed the nVidia driver from either the ASUS site and the prescribed driver from NVIDA site via System Requirements Lab, both ended up freezing my laptop to the point when the desktop is about the finish booting. I have tried three(3) times reformatting and trying to fix the problem. Yet no use. I filed a ticket to the Asus support but for now no replies yet. But this bothers me, why wouldn't the nVidia run on 64bit yet it runs perfectly on 32bit.

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• Creating a file server - How can I use a large VHD file in Hyper-V? (700GB)

  - by barfoon

  Hey everyone, After a few discussions (here, here, and here), I am still unable to create a simple VM that will be used as a fileserver hosted on my Hyper-V box. I have created a fixed 700GB SCSI drive (.vhd file), as I have learned an IDE drive of this size is not possible. Not to sound too cynical, but its blown me away at how much trouble its been to create a large amount of space and start using it. What is the best way to create a fileserver with a drive of this size hosted on Hyper-V Server 2008, and how can I get it going??? Inclusion of OS, driver, integration tools etc, anything you feel is required would be greatly appreciated. Extra information I am using the stand-alone version of Hyper-V server, and not Windows Server 2008. I have tried loading the Linux Integration Tools (linked in the comments of the last link above) onto a SUSE 11 VM and the installation fails, the machine cannot see the vhd at all. Thanks very much,

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• Ubuntu Linux Utilities

  - by Wayne

  I've never used Ubuntu Linux before, but I am researching about the main system tools that are included, e.g. Windows has Disk Cleanup, Disk Defrag... but what does Ubuntu Linux have. I need to know what the main five utilities that are included on Ubuntu Linux and what do they do.

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• If I clone a Hard Drive, Will I Have to Install an OS on it and All the Programs?

  - by TheLakersHighlights

  If I clone a hard drive, will I have to install an OS on it and all the programs?

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• How can I create bootable DOS usb stick?

  - by Grzenio

  I need to use this utility to change one of the parameters of my new WD hard drive: http://support.wdc.com/product/download.asp?groupid=609&sid=113&lang=en It has truly unreadable instructions: Extract wdidle3.exe onto a bootable medium (floppy, CD-RW, network drive, etc.). Boot the system with the hard drive to be updated to the medium where the update file was extracted to. Run the file by typing wdidle3.exe at the command prompt and press enter. I understand that this bootable medium should be some version of DOS? How can I make my USB stick a bootable medium compatible with this utility (I don't have a diskette drive)? I have Windows 7 and Debian Linux installed.

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• What free OS should I use on my VPS?

  - by earlz

  Hello, I looked a bit but didn't see any duplicate of this so my question is which free(open source) OS do you use on servers and why do you use that OS? Background I have a VPS at Linode. There is a broad range of options for which OS I can put on it including both 32 and 64bit OSs. I just use it to run my small blog and for hosting random files. It's very low traffic. I have been using 64bit Arch Linux on my VPS and though I love the OS for general usage, for a server the constant breakage is troublesome. So I'm considering trying something new and am looking for suggestions.

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• When was the last time you had a BSOD or kernel panic?

  - by Bruce McLeod

  The last time I saw a BSOD (Blue screen of death) was when Windows 7 tried to sleep in Parallels 3 which hadn't implemented ACPI for windows 7. Apart from that I can't recall the last time I had a blue screen. Has driver signing finally stopped frequent kernel panics?

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• sizes of RAM, of virtual memory and of swap for 32-bit OS

  - by Tim

  If I understand correctly, a 32-bit OS (Ubuntu) can only address 4GiB memory, so RAM with size larger than 4Gib will only be used 4Gib of itself and the rest is a waste. I am now confused about this situation for RAM with similar one for virtual memory and for swap. with virtual memory being swap + RAM, if the size of the virtual memory exceeds 4Gib, will the exceeding part be a waste for the 32-bit OS? if I now have to choose the size for my swap partition, is it a factor to consider that the 32-bit OS can only address 4GiB memory? Does the size of swap have to be chosen with respect to the 4Gib addressible limitation? Will the swap exceeding 4GiB always be a waste? is virtual memory equal to RAM and swap? or can virtual memory use space on the hard drive outside the swap partition? Thanks and regards!

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• How to make VIM settings computer-dependent in .vimrc?

  - by Paperflyer

  I share my VIM configuration file between several computers. However, I want some settings to be specific for certain computers. For example, font sizes on the high-res laptop should be different to the low-res desktop. And more importantly, I want gVIM on Windows to behave more windowsy and MacVim on OSX to behave more maccy and gVIM on Linux to just behave like it always does. (That might be a strange sentiment, but I am very used to switch mental modes when switching OSes) Is there a way to make a few settings in the .vimrc machine- or OS-dependent?

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• Install ubuntu with Win7

  - by 123Ex

  I'm using windows 7, Now I need to install Ubuntu 11.04 to the my lap top, I want keep win7 in my lap, I'm planing to keep dual boot system on my lap, I want to install Ubuntu on separate partition, I have deleted my windows empty partition to allocate the space to Ubuntu but when I'm proceeding with installation in Ubuntu, I couldn't recognize the empty partition, Ubuntu shows my full hard disk space one 50GB partition to install, I couldn't recognize the 50GB partition, can anyone tell me how to install Ubuntu on my lap. I really appreciate it, I want to install Ubuntu without loosing my existing data, to do that I have allocated empty unlocated disk space. Thank you in advance!

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• What does an ACPI BIOS configure during boot?

  - by RJSmith92

  When a PC boots with an ACPI BIOS, what does it exactly do? I understand that the point of ACPI is to allow the OS to control hardware resources and power management but before the OS is loaded does ACPI configure just the devices needed to boot and then let the OS configure the rest? If the OS wants to re-asign hardware resources does it store this information in the ACPI tables so that the next time the system is booted it assigns them how the OS wants? The ACPI driver asks the PCI bus driver (Pci.sys) to enumerate devices on it's bus once the OS is loaded, how are these devices configured whilst the PC is booting when it doesn't have other bus drivers? Any help with any of the above questions would be greatly appreciated. Thanks.

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• Is there a way to save the installed app list on Windows 8 RP?

  - by Tural Teyyuboglu

  I'm testing Windows 8 RP. Installed tens of apps from market. What I wanna know is, is there any way to save (or maybe sync with Windows Live account) installed app list, and install these saved applications in future - RTM version of OS? I mean, somehing like on Apples' devices - icloud features function that I'm talking about. You can install apps on iPhone and sync with iCloud account. Then you can re-install these apps on another device, which signed in with your login into icloud.

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