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• How to boot a partition using a virtual pc.

  - by Fantomas

  I have backed up my failing hard drive using a ddrescue Linux command to two partition files - p1 and p2 5GB and 90GB each. Now, without saving this back to an actual disk - is there a way for me to boot my old computer virtually, using Virtual PC or Parallels or VMWare? How? Thank you.

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• Why does my 5.1 surround work in testing only?

  - by Mike Pateras

  I've got a 5.1 speaker setup. In both this SoundMax utility (I think it came with my motherboard), and in the Windows 7 sound test, all 5.1 speakers work properly, but that's the only time that I can get audio to come out of the rear speakers and the center channel. When playing games, video, music, etc., I only seem to get 2.1 speakers worth of sound, even though I've configured everything for 5.1 surround sound. How can I get my 5.1 surround sound working during actual use?

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• How should I interpret the specifications of a SSD?

  - by paulgreg

  When considering to buy a SSD, how should I interpret the different specifications of the SSD? Here are some specific things that need to be deciphered: Controller (this can affect performance and endurance more than all other factors combined) Bus Technology Form Factor (Physical Size) Capacity NAND or NOR technology Power Consumption during Read, during Write, when Idle Read/Write Burst and Sustained Throughput All of these things I would like to be explained in more detail and their actual importance in selecting an SSD.

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• [Ubuntu]df Total size is not correct compared with the size of the disk

  - by John John

  I'm running Ubuntu Squeeze and on one of the partitions df is showing the Total size as 335G: Filesystem Size Used Avail Use% Mounted on /dev/sdb 335G 225G 94G 71% /mnt However in the past it was showing as 360GB (which is the actual size): fdisk -l /dev/sdb Disk /dev/sdb: 365.0 GB, 365041287168 bytes lsof +L1 does not return anything (and anyway if this would be the case the Total space should not be affected.) On this partition I'm writing (and deleting) a lot of files and this happened before in the past, but problem solved by itself.

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• What are the real differences between the different cellular network types? CDMA/GSM/3G, etc?

  - by leftovers

  There are all of these different cellular technologies in use. I'm assuming they all have their own advantages, or maybe use each other in some way. What is the actual difference from both a technology and a consumer standpoint?

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• How exactly are Distributed File Systems used in cloud environment?

  - by vaab

  How exactly are Distributed File Systems used in cloud environment ? More precisely: Are live VMs images (or their filesystem) usually located in the DFS ? Are VMs usually used to run the backbone (actual code) of DFS structure ? Precise example citing DFS (ceph, Gluster, GFS, GPFS, Lustre) or cloud environment (Openstack , CloudStack, ...) would be appreciated, even if I'm more interessted by ceph on OpenStack for now.

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• Is it possible to copy a set of files, but automatically skip if file already exists?

  - by awe

  I know that the copy command has an option to automatically replace a file if it already exists, but I want to know if it is a way to copy the files only if they not already exist (/Y). I do not know the actual file names in the batch code, as I copy from the source using wildcards in the copy command: copy *.zip c:\destination The reason I want this instead of automatic overwrite is that the files are large, and to skip existing would save a lot of execution time.

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• Can't change Firefox menu background color using userChrome.css on Windows 7

  - by soupagain

  I can't change Firefox's menu background color using userChrome.css on Windows 7. menubar, menubutton, menulist, menu, menuitem { color: red !important; background-color: orange !important; } This seems to work as the menubar changes to red and orange. But the background-color on the actual drop down menu stays the same (that Windows 7 menu look), although the text color does change to red. Any ideas??

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• How to save a remote server SSL certificate locally as a file

  - by Kimvais

  I need to download an SSL certificate of a remote server (not HTTPS, but the SSL handshake should be the same as Google Chrome / IE / wget and curl all give certificate check fail errors) and add the certificate as trusted in my laptops Windows' certificate store since I am not able to get my IT guys to give me the CA cert. this is for office commnunicator so I cannot really use the actual client to get the cert. How do I do this, I have Windows 7 and a pile of Linuxes handy so any tool / scripting language is fine.

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• How to make LibreOffice Calc to connect points in a holed series chart with lines?

  - by Ivan

  I've got a time series data table with one function (row) value available for every month and the second for every 3rd month (every quarter), having holes (empty cell values) for every 2nd and 1st months of a quarter. When I try to make a chart, I can only draw a bar or a point chart, but I want the actual data points to be interconnected with lines visually filling the gaps. How to achieve this in LibreOffice 3.6?

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• How to check if a given subtitle file is the right one

  - by Sab

  I very often use subtitles on my mkv player to watch movies. I have frequently observed that there is sometime a lag between the subtitles and the actual video. Even after setting the subtitle offset one would have to go on increasing it as the movie proceeds. This is something i find extremely annoying and would like to know if there is any way when one can check if a subtitle file is the ideal one for a given video.

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• How do you determine if your domain isn't AD or ADAM?

  - by icurious

  I'm trying to get some authentication stuff set up in ASP MVC, but keep getting thrown errors about how it doesn't support anything but Active Directory (AD) and Active Directory Application Mode (ADAM). How can I figure out the actual running version of my LDAP provider? Is there some sort of command or query I can run against it? It's entirely possible it isn't AD or ADAM, but I have no idea how to figure that out.

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• How does Apache interpret these two configurations?

  - by wamp

  AddHandler application/x-httpd-php .php AddType text/html .php After adding the above two statements,apache can server php requests. But the actual executable to interpret PHP script should be php.exe,so Apache can convert application/x-httpd-php to php.exe?

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• How can I crop every page of a large PDF file?

  - by Andrew

  I have a 1300 page PDF file of a scanned book that was unfortunately not cropped when scanned. The actual book page dimensions are around 6x9", but each scanned page is 8.5x11", the size of the scanner bed. For much smaller PDF files I could throw it into Photoshop and crop the page, but this is a huge file. What is the best way to losslessly crop all of the pages of the file, in either Windows or OS X?

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• display values within stacked boxes of rowstacked histograms in gnuplot?

  - by gojira

  I am using gnuplot (Version 4.4 patchlevel 2) to generate rowstacked histograms, very similar to the example called "Stacked histograms by percent" from the gnuplot demo site at http://www.gnuplot.info/demo/histograms.html I want to display the values of each stacked box within it. I.e. I want to display the actual numerical value (in percent and/or the absolute number) of each box. How can I do that?

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• Computer "Server"

  - by user328379

  so at home we had the idea of instead of buying 3 different pc's we would somehow create a "server" for the computers where a cable would come to our screens and keyboard and mouses, so the actual pc was somewhere else in the house with all the others. Does such a thing exist? And is it possible to have such a thing for high performance workflow? (Compiling, High-End Games, just as if it was a separate pc )

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• Is there a way to make Notepad++ auto-complete words on {TAB} instead of {ENTER}?

  - by Andrew Cheong

  Is there a way to make Notepad++ auto-complete words on Tab instead of Enter? Currently, if want to type, say, frame, then Enter to begin a new line, instead the Enter will select the first auto-complete suggestion, like frameElement:      I do want the auto-complete feature, but I'd rather have a key like Tab do the actual selection, because Enter is frequently purposed toward starting a new line, whereas Tab is rarely used to indent after a word (since indenting is usually done at the start of lines), and so perhaps would be better repurposed toward auto-completion.

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• I can't connect to mysql on a remote server

  - by eisaacson

  I'm trying to connect from an Ubuntu server to a RHEL6 server using mysql. I've tried telneting into the server as well as trying to connect with mysql. I've tried commenting out the bind-address but didn't have any success with that either. I don't get an error code or anything with telnet. It just fails after a minute or so. With mysql, I get this error code ERROR 2003 (HY000): Can't connect to MySQL server on 'SERVER_IP' (111). "SERVER_IP" is of course a placeholder where actual error gives that actual IP. I've included my my.cnf as well as well as my iptables from the destination server. On Destination Server... my.cnf: [mysqld] bind-address=0.0.0.0 tmp_table_size=512M max_heap_table_size=512M sort_buffer_size=32M read_buffer_size=128K read_rnd_buffer_size=256K table_cache=2048 key_buffer_size=512M thread_cache_size=50 query_cache_type=1 query_cache_size=256M query_cache_limit=24M #query_alloc_block_size=128 #query_cache_min_res_unit=128 innodb_log_buffer_size=16M innodb_flush_log_at_trx_commit=2 innodb_file_per_table innodb_log_files_in_group=2 innodb_buffer_pool_size=32G innodb_log_file_size=512M innodb_additional_mem_pool_size=20M join_buffer_size=128K max_allowed_packet=100M max_connections=256 wait_timeout=28800 interactive_timeout=3600 # modify isolation method for faster inserting. # Do not uncomment the line below unless you understand what this does. # transaction-isolation = READ-COMMITTED # do not reverse lookup clients skip-name-resolve #long_query_time=6 #log_slow_queries=/var/log/mysqld-slow.log #log_queries_not_using_indexes=On #log_slow_admin_statements=On datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock user=mysql # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 #Added by Magento ECG long_query_time=1 slow_query_log [mysqld_safe] log-error=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid iptables: :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 225 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp -i eth1 --dport 11211 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT sudo netstat -ntpl Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:11211 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:2123 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:1581 0.0.0.0:* LISTEN - tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN - tcp 0 0 :::11211 :::* LISTEN - tcp 0 0 :::22 :::* LISTEN - tcp 0 0 :::225 :::* LISTEN -

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• CD Burned in XP isn't readable in Vista

  - by RickMeasham

  I burned a CD on XP using the built-in burning software and I can read the CD on that machine, but when I insert it into my Vista machine, I can't read the files. It shows the correct volume label, and the correct 'free space', but I can't access the actual files. Am I missing something obvious? (Both systems are fully up-to-date)

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• Hard Drive Physical Disc Swap

  - by Sev

  Is it possible, and if so, what would it take to do a hard drive disc swap? If a HD has a damaged PCB board, but the actual disc inside the drive where all the information is stored is not damaged, is it possible to take that disc and put it in another hard drive whose PCB board is not damaged? (as long as both are the same type, SATA to SATA, etc.) Can this be done at home? Any special requirements?

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• DNS lookup aliasing of hostnames (not IP aliases), probably via dnsmasq

  - by intuited

  I'd like to be able to set up a host, say "eg", to be an alias to some server on the internet, say "example.example.com". I just need this functionality to be available from my local machine. I'm running dnsmasq on that machine, which is running ubuntu 9.10. Is there a way to configure dnsmasq or the resolver subsystem (including avahi) to resolve that alias hostname via the actual hostname, so that eg will resolve to the ip address of example.example.com?

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• Trac changesets not displaying

  - by Robin Weston

  I have setup Trac to integrate with our VisualSVN server. It all seems to work fine, except when I am viewing changesets, it only shows the files that have changed, not the actual diff of what has changed in the file. In addition, when I am viewing a particular file in Trac, the 'diff' link is not visible, which I have seen in other installations. I assume it is probably a configuration issue, or maybe the way the data is being entered in the first place. Any suggestions?

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• What are the advantages of the Windows registry?

  - by jay

  The Windows Registry is one of the biggest targets for criticism from practically everywhere. It's not too hard to find disadvantages for it's use, but MS has still kept it since Windows 95. What is the philosophy behind having a centralised database for all settings instead of lots of readable INI files? What actual advantages does the registry have over folders and sub-folders of settings files?

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• Windows CHKDSK starts when 6 seconds have passed

  - by Whirlwin

  After reading this thread I might have sorted out why the CHKDSK-prompt starts. But the biggest problem is that when it prompts me with Press any key with in 10..0 seconds, nothing happens until the timer hits 6, then it starts the check even though I've pressed any button (and yet it's 4 seconds left). This question states the problem as it appears at me, though the answer is wrong. Why does the actual check start after 6 seconds, and is there any way to disable it from within Windows?

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• How can I properly set up a Gmail account in Apple Mail?

  - by Shamoon

  I want there to be labels and not have 2 sent folders, etc. Also, ideally I'd like for the folders (or mailboxes) to not be all the way at the bottom, but rather right in the actual main mail area. Any help?

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