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• Very poor read performance compared to write performance on md(raid1) / crypt(luks) / lvm

  - by Android5360

  I'm experiencing very poor read performance over raid1/crypt/lvm. In the same time, write speeds are about 2x+ faster on the same setup. On another raid1 setup on the same machine I get normal read speeds (maybe because I'm not using cryptsetup). OS related disks: sda + sdb. I have raid1 configuration with two disks, both are in place. I'm using…

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• Any reason not to disable Windows kernel paging?

  - by Nathaniel

  So I'm planning on eventually going to 2 GB (mobo max) RAM from 1 GB, and I want to disable kernel paging once I do, because I've heard it can give a performance boost (and that I believe). Any reason not to do it or any general thoughts about it? Edit: for clarification, this is not disabling general RAM paging. This is disabling having kernel…

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• "Busy" icon not spinning in Windows 7

  - by Débora

  Hi there, I just got a new Sony Vaio with pre-installed Windows 7 and I noticed that the busy icon (that is, that little blue wheel that stays next to the mouse pointer when Windows is processing something) doesn't spin, ever. Does anyone know what could cause this, or how to fix it? I don't know if my computer specs would make a difference in…

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• 32 or 64 bit for Linux?

  - by Robert Munteanu

  I own a Linux workstation which currently has 4 GB of RAM and planning to go for 8 GB in the near future. CPU is a Core2Quad Q9550. Should I install a 32 or 64 bit variant of Linux?

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• Antivirus for Windows Server 2008 R2

  - by raja

  I am trying to get a Antivirus server for my Virtual Private Server that has Windows Server 2008 R2 x64 1.5 GB RAM and 40 GB HD. I see people have suggested for NOD32 or Kaspersky but they are not offering Internet security for one server in business edition (it starts with at least 5 PC) and they says I can't install home edition on my VPS as…

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• VMware, Ubuntu emulator on Mac: strange "free space" information

  - by Patrick

  I'm using an Ubuntu emulator (VMware) on a Macbook. My Mac says 3 GB free, while my Ubuntu emulator says 16 GB free. I am wondering if my Ubuntu installation is "reserving" those 16gb, or it is just a wrong parameter? Thanks

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• Move files on windows7 ntfs dead slow?

  - by slabo

  Just installed Win7, and i noticed when i move a file/folder, it actually copies, then deletes. I noticed because if i want to move 40 GB, I must have 40 GB free space. On XP, if I am moving folders and files within the same partition, no matter size, are moved instantly. Only the number of files matters. Any way to get around this? Thanks.

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• LVM snapshot size

  - by Devator

  I currently have 2 volume's: [root@compute4 /]# lvscan ACTIVE '/dev/vps/vm108_img' [30.00 GB] inherit ACTIVE '/dev/vps/vm109_img' [90.00 GB] inherit Now, I use the LVM snapshot function to create backups. My quesion is, what size does the snapshot needs to be? Atleast the same as the volume in question or can it…

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• What causes Windows 8 Consumer Preview to lock-up / freeze / hang in Oracle VM VirtualBox?

  - by Zack Peterson

  I've installed Windows 8 Consumer Preview to a virtual machine using Oracle VM VirtualBox (4.1.14). It works well except for occasional temporary lock-up / freeze / hang interruptions. It will freeze for about a minute and then resume like normal for several more minutes before freezing again. Host Windows 7 Professional 64-bit 16 GB RAM…

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• Restoring a SD card after using it to root a device

  - by Raz

  I recently purchased the Nook Touch reading device. I rooted it using the instructions on nookdevs.com Rooting included using win32diskimager to somehow transfer an .img file onto the card. Rooting is now completed and as far as I can tell, I don't need to keep the files used on the SD card, which has been reduced from a 3.5 GB or so…

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• How to mount a USB thumb drive as "Fixed" instead of "Removable"

  - by AMissico

  I have over 8 GB in my "Code Library" that I maintain on a 64 GB ScanDisk Ultra Backup USB Device. Windows Search 4.0 (installed on Windows XP) can index removable drives, but Windows 7 (which uses Windows Search 4.0) cannot, because the USB device identifies itself as a Removable drive and Windows 7 refuses to index…

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• How can Rackspace beat DigitalOcean's Pricepoint? [on hold]

  - by Matt Jensen

  I have recently discovered Digital Ocean and I have found it to be a relatively nice experience for small staging servers, and the thought occurred to me, why am I paying $267~ for a server on Rackspace (40GB RAM, 160 GB Drive, 2 vCPUs, 400 Mb/s) when Digital Ocean offers a server for $40 (40 GB RAM, 60GB Drive [storage is not…

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• memory cards capacity needs to be the same?

  - by balalakshmi

  I am not a hardware guy. I just heard this from a service engineer Memory cards of unequal capacities should not be used. that is if there is a 1 GM already in the slot, we need to add another 1 GB card only. Not 512 MB or 2 GB. Is there a problem if we use memory cards which are not equal capacities?

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• How to increase the size of a VirtualBox Disk Image

  - by Alex. S.

  I had created a Windows XP image disk. It is of 5 GB, but I would like to know if there is any simple way to increase the size to 20 GB.

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• How to expand HD space that Virtual PC "sees" as *available* in Guest O/S

  - by Clay Nichols

  I have run into this problem several times: I go to install some software in Virtual PC with a Dynamic HD on the Guest O/S. And while the HD can expand up to 16 GB or so (plenty to spare on the physical HD) the Guest O/S sees only 3 GB or so (and maybe 500 MB free). And the installer balks that there isn't enough HD space…

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• Harddisk formatting with dd return error

  - by Usman Ajmal

  Hi, I tried to format my harddisk (160 GB) with the following command dd if=/dev/zero of=/dev/sda After some 3 hours, following error came up: dd: writing to '/dev/sda' : No space left on device 312581809+0 records in 312581808+0 records out 160041885696 bytes (160 GB) copied, 10708.3 s, 14.9 MB/s Any idea…

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• My hard drive can only boot once every two times

  - by Eisaj

  Hi all, I just installed a Kingston 64 GB SSD into my laptop, replacing the old 80 GB 5400 RPM one. The drive starts up and works fine every other time. For example, if I'm running normally, and press "Restart", I get: 2100 Initialization error on HDD0. I turn off the computer manually, restart, and...it boots into…

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• Which is a better use of my SSD Drive [on hold]

  - by RS Conley

  I have the choice of setting up a system with two SSD Drives in Raid 1 mode as my boot drive for Windows 7 64-bit. With the Program Files and User Folders moved to a Second regular HD Drive also configured using Raid 1. Or Setup a single SSD Drive (120 GB or 256 gb) as a cache Drive using Intel Rapid Storage…

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• Partition/install issues

  - by jalal ahmad

  I am new to Ubuntu and tried to install 10.1 as dual boot option from a USB. At first I encountered the error when in partition dialogue of installation process that cannot find root directory. I did a search on Ubuntu forums and did this as in one of the posts. Make sure that the partition file system you…

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• Mac OS X missing disk

  - by leo

  In boot camp, it only see partition size to be 149G while disk utility shows only one partition with size 320G. Why diskutil and df gives me different sizes? Also how can i fix it? thanks df -h Filesystem Size Used Avail Capacity Mounted on /dev/disk0s2 **149Gi 20Gi 129Gi 14% /** devfs …

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• Is the Windows 7 default graphic driver faster than the newest NVIDIA Forceware?

  - by netvope

  Here is my Windows 7 Experience Index using the stock graphics driver: And after installing the newest driver Forceware 197.45, it becomes: The only change is that the "Gaming graphics" subscore drops from 6.4 to 5.2. Is the stock graphic driver more optimized for Windows 7? Or is Forceware 197.45…

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• Corrupt tar (Resulting folder smaller than packed file)

  - by Om3g4

  Hi everybody, I have an issue with a tarball created on a SuSe 10.3 Server version. The .tar file has a size of 6.5 GB but if I untar it under Ubuntu 9.10 the resulting folder only has a size of 1.5 GB. commands used: tar cvf for packing, tar xvf for unpacking. Perhaps somebody knows how this can be…

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• Why is Windows "stuck" on the Welcome screen for so long?

  - by Perdana Putra

  I use Windows 7 with a laptop specifications processor core (Core i3), 2 GB DDR3 RAM, the remaining capacity on the system partition (25 GB). I do not know why the "welcome screen" takes a long time (about 40 sec), but yesterday only took about 10 sec., I tried to defragment the…

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• VoxCAST / Voxel CDN experience?

  - by papanel

  Hello all, I see Voxel quoting $.10/GB, no monthly commitment. At our traffic level, this is significantly cheaper than I'm getting quoted from more established CDN's (generally .18-.22/GB). Anyone have any experience using them? Thoughts? Thanks!

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• USB hard drive not recognized

  - by user318772

  Until recently I was using the portable USB hard drive in my win 7 laptop and ubuntu laptop. Suddenly now none of the laptops recognize it. This is the message i get by doing lsusb... Bus 001 Device 004: ID 1058:1010 Western Digital Technologies, Inc. Elements External HDD Bus 001 Device…

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