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• We want to setup low cost private cloud [closed]

  - by Virtual Jasper

  We are a small company with very limit funds. In order to improve our server reliability, we are studying to migrate to CLOUD. We seen some CLOUD provider, they would charge by resources such as, CPU, RAM.....Disk space....High Availability....etc. We have server team, so we also consider to built the private CLOUD, we seen the Windows 8 server, it does need license fee. So we looking at Linux side, we look at Ubuntu and OpenStack. What is the different between Ubuntu and OpenStack solutions? Is it both free on software license? and only to pay the technical support.

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• Trying to mount an NFS directory from a Mac with another user

  - by Yair

  I have a username on an ubuntu server, lets call it user a. I want to mount a directory from that server to my Mac, on which I have another username, lets call it user b. My problem is that, after I mount the directory (using the disk utility app) I can view files on the server but can't modify or create new files on it. I checked, and if I change the permissions of the server directory so that its open to everyone (chmod 777), I can write to it. So what I need to know, is how can I specify the username and password in the NFS client when setting up the mount? That is, I want to specify that I'm trying to log in as user a to the server.

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• Manual vmware image creation

  - by Gzorg

  A laptop hard disk is being defective, but I managed to be lucky enough to get access to it, using an Ubuntu live cd. Now, I think it would be nice to dump the whole thing, using, for instance, a combination of gzip and split. But that would make the resulting files unusable. I could make a VMware image of it instead. I'm currently looking for the answer, which involves finding how vmware manages fixed size virtual partitions, but maybe you already did this before. Thanks.

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• Windows 8.1 reset

  - by CreeperInATardis

  I recently had a massive crash on my Windows 8.1 partition, which has rendered it (practically) unusable. I tried to do a refresh, but the problem is, I have a Windows 8 install disk, not 8.1, and thus it didn't work. I also do not have any system restore points/backups of any sort, but I have managed to move my files off. Also, I do not know where my product key is (and cannot find it online), so a clean reinstall would not work. My question is, is there any way to change my Windows 8 disc into an 8.1 disc to allow me to refresh/reset my PC, or is there any other way to do this (aside from repurchasing?) Thanks!

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• Friend wants to return an iMac with Lion in it. How does he remove his personal info / do clean install?

  - by fakaff

  I have a Mac, but not Lion, and it seems like a lot has changed with Lion. He wants to return the computer. I told him doing a clean install will make it like new, but he says you can't download a bootable disk image from the appstore to do this. He doesn't want to torrent it because he thinks the store will know it's a ripped version. Is there a way for him to remove his Admin account so that none of his personal info remians on the machine?

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• Apache logging: rotating logs on Win32?

  - by Jason S

  I was noticing my disk space disappearing faster than expected, and finally narrowed it down to a rewrite.log file that was 4 GB in size! Is there a way to rotate the various Apache logs (rewrite, error, access, etc.) on a Win32 PC so that only the most recent entries are there and I can limit the data size that results? I found the bit about log rotation on Apache's website but it's Unix-centric. Edit: I got rotatelogs.exe to work, and it's great except that it slows the server response down noticably so I rejected the idea of using it.

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• Saving backup files automatically in (g)Vim after saving a file.

  - by Somebody still uses you MS-DOS

  I had a problem with my gVim. I lost some important modifications after I plugged on my machine after a hibernating process. To avoid this kind of problem, I would like to know if it's possible to add something in my .vimrc (or a plugin) that automatically backups all saving made to my files. Disk space is not an issue, I can delete these files after. I'm already using set backup set backupdir=~/.backup/vim set directory=~/.swap/vim This creates a myfile.extension~ in my .backup/vim. ...but I would like this configuration to add ~ to first save, ~0 to second, ~1 to third, ~2 to fourth, and so on - something that keeps copies from all modifications I made to a file. Is this possible? Do you know if there's a plugin for this?

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• Is it possible to analyze the size of a SubVersion repository?

  - by BrianH

  Is it possible to know how much disk space each project in a SubVersion repository is using? I can check out a working copy of each project and look at the size each project takes up, but I don't think that encompasses the total size of the project (all revisions). I can look under the "db" directory of the repository, but none of the files in there make sense - I don't think it is possible to use them to figure out how much space each project occupies. I tried the svn ls --verbose command, but the size that it gives me is just the size of the actual files in the head revision, I don't think it includes all revisions. Maybe this isn't possible, but I thought I would ask. Thanks in advance!

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• Does multi-platter hard-drive use all of their heads to read simultaneously?

  - by WiSaGaN

  Suppose we have a harddisk with 2 platters with characteristics below: Rotational rate: 10, 000 RPM Avg sectors/track: 1000 Surfaces: 4 Sector size: 512 bytes I was reading "Computer Systems: A Programmer's Perspective 2ed" when I found that it calculates transfer time as if it only uses ONE head to read a sector. If that's the case, why not use 4 heads to write(read) on 4 surfaces? So when I write a 2K bytes file, each head should only need to wait for the platters to rotate just one sector length instead of 4, thus reducing the transfer time by a factor of 4. Or even redesign sector to make each sector on one cylinder but on 4 tracks residing same position respectively on 4 surfaces. Each one of (512/4) bytes. So when the hd needs to read a sector of 512 bytes, we only need the disk to rotate roughly 1/4 compare to original time. The idea looks like RAID 0.

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• Snapshots are disappearing from Time Machine. Why?

  - by AntonAL

  I have TimeMachine enabled for my external HDD. I'm triggering backups manually 2 times per week. I have noticed, that some snapshots, that i made, are gone. I noticed this behaviour several weeks later, but i had doubts. To make it sure, i've recorded screen video with listing snapshots in TimeMachine. After watching my screen recording today, I'm sure, that for Augusut i had 9 snapshots. Now, i have only 3 of them. What's happening ? I had no crash disk reports, errors etc

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• Restoring raid 5 array after bios flash

  - by cogergo

  I have just flashed my BIOS and now my machine does not detect my raid5 array! It has three 2TB drives in it so that is a LOT of data that will be lost! I have NOT deleted the array and it does not offer me to reboot I'm using Nvidia MediaShield! and Windows 7. Any ideas guys? Thanks! Update: here is the GUI raid configuration. As you see it shows one disk in the array but for some reason not the other two! Click for image of raid configuration error

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• Windows XP occasionally hangs for 2-3 minutes as the splash screen fades in.

  - by marcusw

  This is a bit of a rare problem, I have not been able to debug or fix it or find anyone else with the issue. I hope someone here can help me out. Once in a while, I boot up Windows XP from the first partition of the first disk (using grub, the computer dual-boots ubuntu) and it hangs as the Windows XP splash image fades in, leaving the screen with a dim image of the splash screen. After 2-3 minutes, it continues to boot as normal, no error messages or strange behavior. I have noticed that this happens about 75% of the time when the last time the computer was shut down it was from Ubuntu, and maybe 5-10% of the time otherwise. I have looked at system logs as far as I was able, and did not find anything the miss. What is causing this and how can I fix it?

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• Preparing a hyper-v VM image

  - by Anteru

  We have a Hyper-V Windows Server 2k3, and we're hosting multiple VMs on it. However, right now, we always start the VM creation right on the server, i.e. when preparing a new Ubuntu image, I just install it into a new VM and set it up and when I'm happy we store the disk image. I wonder if there is a way to prepare a hyper-v image locally on my desktop machine instead? I'm running Windows 7, and I would love to be able to set up a VM so that we can copy the image over to the server and be done with it. This is for linux images only, and we definitely need the hyperv network integration. Is there a recommended way how to prepare hyperv images without running a hyperv instance somewhere?

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• Vostro 1520 crash during bios update

  - by Deadmilkman

  My Vostro 1520 (P8700 C2D) originally came with BIOS A02. This bios version have known problems with VT, so I had to upgrade to A05. During the upgrade, the notebook crashed. Needless to say, it won't boot anymore. The simple question is: is there a way to access the bios boot block to recover the bad flash with a crisis disk? I know that the MINI and the ALIENWARE models have this feature, but I can't seem to find anything about it in the Vostro machines. Any help will be much appreciated. PS: Dell's solution is to change the motherboard, but it will take several days, as the board isn't available in my country :( Regards, Deadmilkman

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• Weird noise coming out on Windows 7 when harddisk activity at peak?

  - by Curious Apprentice

  I'm having a very strange problem. I'm hearing a "choooooooooo kkkrrr" sound (Its not like the normal sound speakers make when powered on) all the time. When there is more Hard Disk r/w activity the sound increases and as HDD r/w activity slows down so the sound. I have two other OS installed on my system. I have tested, it only happens when I'm on Windows 7. I have no clue what the hell is happening !? Any help would be greatly appreciated. Here's the sample of noise: http://www.ziddu.com/download/20852917/noise.mp3.html

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• run ubuntu from virtual box in an external hard drive

  - by Bhavan

  I would like to run ubuntu on my external hard drive. I have got virtual box installed in the external hard drive and made a machine named ubuntu and installed the latest ubuntu version which i got from the .iso download. Now after much juggling around i got ubuntu running on the machine which i did the whole installation. When i move it to another machine the virtual box just woudnt open. What is the reason for this and how can i get the ubuntu run from whichever machine i plug in the external usb hard disk. Thanks a lot for your answers in advance. Best regards Bhavan

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• Move 2TB Win7x64 to 640GB HDD

  - by reedacus25

  Basically I just got a new (refurbished) HP H8-1260t to use for Windows Media Center. The shipping drive is a 2TB Hitachi drive, but I have an older and barely used 640GB WD Caviar Blue 7200RPM drive I would like to move my Windows install to. I have about 750GB of data with over 1TB free left on the drive. Having googled my heart and fingers out, I would think that I can shrink my partition down to the size it is full at now with over 1TB free for a second partition where I can move my media files to further shrink my boot partition so that I can fit a system image smaller than 640GB on that WD drive. I want to have a separate drive for Media and TV Recordings from my boot disk. Does this sound like the easiest method for me? Or am I doing this all wrong. Help appreciated.

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• Does uwsgi workers share a common memory ? [ With Nginx ]

  - by Yugal Jindle

  I have configured my Nginx with Django uwsgi. When the django server starts, it reads a 5MB file from the hard-disk. Now, Without Nginx with Django default server python manage.py runserver = Runs immediately and starts serving pages. Problem: With Nginx as the server It takes very long time and several HTTP 504 before it start serving pages. So, How does uwsgi workers work with Nginx ? I have: 4 Workers 512 Threads each So, is the 5MB file getting read 512 * 4 times ? Is there a possible work around for this in Nginx / Uwsgi ?

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• Harddrive speed drops a lot!

  - by AZ

  The hard drive is used to do BT with uTorrent. Recently uTorrent began to report there is a "I/O Device error", then I use HD Tune to test it, it turns out the transfer rate is only 16 MB/sec. At the same time, I have a similar hard drive tested, it rates as 120 MB/sec. They are both 7200rpm desktop hard drives. I used chkdsk to fix it but the rate didn't change. Is this a symptom of hard drive failure? Should I backup the content on the disk ASAP or is there any other tool can fix it or diagnosis it?`

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• How to force a hard drive to shut down

  - by Phenom

  I have a hard drive in my computer that I'm not using. I want Windows 7 to shut it down. I don't want to have to manually remove the cable. (The reason is that for some strange reason my computer will not boot if it's not connected. disk boot failure after upgrading power supply) I know that Windows 7 will shut it down after a certain period of time of it not being used. How can I force it to shut down without having to wait for this?

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• UNMOUNTABLE BOOT VOLUME win7

  - by user1809318

  i'm having a serious problem with my laptop (Toshiba satellite l40). Two days ago i just turned it off by holding the power button and the next day it didn't start at all. There is a blue screen with an error : UNMOUNTABLE BOOT VOLUME, i searched all over the net for a solution, did almost everything like using the windows 7 install disk and trying to repair with the command prompt (check c: /r, bootfix etc.) it runs the check saying there are no errors and when i restart the blue screen again. Can someone please give me some new solution?

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• “BAD” partition showing up in Partition Manager

  - by Quintin Par

  I tried to partition my primary hard disk (NTFS partitions) with qtparted and got stuck in the process. Consequently I had to kill the process and exit my knoppix live CD boot up. Even though I was expecting XP to get corrupted, it booted fine and showed up all the drives accessible. But when I opened this with partition manager 8, it shows up as “BAD”. I ran chkdsk /f without any success. My objective with qparted and partition magic was to resize my existing partitions and add some space to c: How do I fix this problem and resize my partitions? Edit: Here's how my primary drive as per Windows is:

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• How do you host images using Windows Server so that they are accessible over the internet? [closed]

  - by nairware

  I was trying to figure out a way to host images (picture images, not disk images) such that they are accessible over the internet via URLs--in a way similar to a web service like Photobucket or ImageShack. I have a whole bunch of Windows Servers (Windows Server 2008 R2) available in the cloud. Instead of hosting images using Photobucket or ImageShack, I wanted to host this images directly on my own Windows cloud. This could be really complicated or really simple. I have no idea, as I know very little about IIS 6 (which is what I am using) or web servers. If this is too broad of a question (as there are probably multiple ways of implementing this), is there at least some guide or documentation of how someone else has setup image hosting? Perhaps a step-by-step guide of at least one way to do it?

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• Install Windows 8 (clean) on Hybrid Drive

  - by Ananthakrishnan Ravi

  I have a Sony Vaio T series (UEFI) that consists of a Hybrid Drive (SSD + HDD). I would like to install Windows 8 on the SSD and keep the Program files and other applications on the hard disk. What I could perceive was to keep the SSD as the System Drive. I'm able to install the OS on the SSD, but I run into some issues where I don't see the Microsoft Store App on my system and there are no apps on Windows 8. I tried using this blog post but doesn't seem to fit for Windows 8. Any help in this regard would be great. I would like the Windows 8 alone on the SSD, I don't care about the space wasted on the SSD and install other programs on my HDD. Thanks

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• Restricting server.log file size (minecraft) in CentOS

  - by MisdartedPenguin

  I'm currently running a bukkit (minecraft) server which generates a server.log file with all the console messages / errors. Every now and then I have a plugin (which i need) that crashes and can cause the server.log file size to increase dramatically. I've had it hit 32GB before which used all my disk space. Is there a way to make it a rolling log (deletes old errors) or be able to limit the file size so it can't go above say 10MB. But the solution needs to not affect how the server runs so it doesn't throw an error when it can't write anymore. Anyway of doing this with CentOS?

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