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• Shut Out of XP - No Admin Password or CDR

  - by ashes999

  I inherited an old WinXP/Linux dual-boot machine from the stoneage. Because it has Linux, the regular boot process is replaced with the Fedora boot loader; I cannot, therefore, press F8 strategically to tell my PC to boot from CD. Even if I could, it's a moot point; the CDR doesn't seem to recognize any CDs. To make things worse, there's no option to network boot. The original user is probably long gone; I don't know the password for any of the Administrator group users. I can login using my corp account, but that's unprivileged on this machine. Since I'm not an admin, I can't do crazy things, like looking at boot.ini. Or deleting files. I only have 500MB free on my C drive. I'm pretty sure I can't boot from a USB, since I didn't see any settings for this in my BIOS. How can I get admin access for my user? Edit: Things I've tried: Boot from CD (CD not recognized) Launch CD from XP (CD not recognized) Install Daemon Tools Lite so I can install from an ISO -- don't have admin privileges XP password recovery tool -- requires admin privileges Adding an admin user -- no access to Control Panel Users since I'm not an admin Logging in as both the admin users on the system (trying some standard passwords) Using Fedora to chntpw (the Fedora version installed is ancient -- 2.7)

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• EXCEL workbook, intermitently, takes 30 seconds to load

  - by Julio Nobre

  I am trying to figure out why a simple .XLS EXCEL workbook is taking, randomly, 30 seconds to open. Before answering: Please, bear mind the following: Problem symptoms Hanging is intermitent and it takes exactly 30 seconds; During hanging there is no cpu or disk activity; It only happens during workbook load. Every runs smooth after that; Windows Explorer.exe hangs on folder, but all other folders, system and applications are still responsive; There are no consecutive hangings. I have to wait for while to reproduce this behaviour; All workbooks where located on a local drive (C:\BPI); The workbook has no macros and no addins; Office 2003 is being used for several years; The computer is running Windows XP; Computer has several network mapped drives, all addressed to main file server; Recently, main fileserver was replaced by Windows 2011 SBS Standard Edition What I have done so far I have traced machine Explorer.exe, using Process Monitor, added Duration column, and filtered by Duration 1. That's is how I found that hanging was taking exactly 30 seconds. For further information, please refer to Oliver Salzburg tutorial. Using Process Monitor, I have also figured out than five operations were taking most of sample collecting duration. Looking at sample image below, column Operation below you will notice that one single operation was taking 29 seconds; I have tried different workbooks (all of them smaller than 30 KB); I have, temporarily, removed all shortcuts on User Document's folder that were pointing to network drives or shares; I have runned CCleaner to fix registry issues; I made sure that there were no external links on tested workbooks; I have reproduced this behaviour for hours; I have extensivelly researched for hours on the web; Process Monitor's collected and filtered data

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• How can I filter data based on items in a list?

  - by user2964366

  How can I filter entries containing any specific word in a list of words? For example, I have a list of road names in Singapore. Amoy Street, Singapore Ann Siang Hill Anson Road Arab Street Armenian Street, Singapore BBaghdad Street (Singapore) Balestier Road Banda Street Bartley Road Beach Road, Singapore Bencoolen Street Bernam Street Boat Quay Boon Tat Street Boundary Road, Singapore Bras Basah Road Bugis Street Bukit Batok Road Bukit Pasoh Road Bukit Timah Road CCantonment Road, Singapore Choa Chu Kang Road Clarke Quay Clementi Road Club Street Collyer Quay Connaught Drive Craig Road (Singapore) Cross Street and many more My spreadsheet has a large number of entries like the following, which may or may not contain road names mentioned in my list: Saw an accident at Thomson Road Found this by accident 6 vehicles crashed at Balestier Road I wanna crash now. So tired. Bus collides with bicycle at Arab Street. Accident at City Road. You can crash my house later. How do I filter to return entries that contains any road name identified in the list of names? How do I introduce an array/list of road names into Microsoft Excel and then relate it to a filter function?

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• Windows 7 won't boot from any bootloader except for Windows Boot Manager after partition resize

  - by user2468327

  I have a triple boot system on a single SSD: OSX, Windows 7, and Ubuntu. I use Chimera (basically another version of Chameleon) as my bootloader. Usually I can boot all 3 OSs without any issue, but after using GParted to make my Ubuntu partition 2 Gigs larger, Windows 7 throws me an error when trying to boot to it from either Chimera or Grub. The error is consistently: `0xc000000e can't find \Boot\BCD" (slightly paraphrased). However, I can still get into Windows by selecting Windows Boot Manager from the boot options in my BIOS. I've already tried several known fixes for similar issues, including bootrec /rebuildbcd (and variations), and BootRec.exe/fixMBR + BootRec.exe/fixBoot. I've also tried Chkdsk. At best this has made it so Windows 7 boots on its own by default (making me have to reinstall Chimera and change back my boot settings in the BIOS). At worst this made it so Windows won't boot period. Now I'm back full circle where I started. A detail that might be useful is that bootrec /rebuildbcd says that the number of found Windows installations is 0. I'm fairly certain that I don't have a hybrid MBR. Mainly because I have a UEFI BIOS, and with that, it appears each OS can support a GPT. So it would kind of pointless to have and deal with. I may be wrong though, I couldn't find any way of finding out for sure online. However, I know for sure that the version of Windows I have installed is the UEFI version, as well as every partition tool I've used to look at my boot drive tells me it's GPT. How do I get it back so I can boot Windows 7 through another bootloader so I don't have to manually select it in the BIOS? Preferably without a reinstall.

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• trouble shooting ntfs-loop-xen combination in wubi based grub of Ubuntu

  - by Registered User

  Here is a situation I installed Ubuntu on a laptop using Wubi in Windows 7 drive.*The laptop is not mine.*I have installed and things worked by now perfectly without any problem.We are trying to set up a Xen (virtualization)environment in this laptop. After setting up every thing cleanly.When I needed to boot with following grub entries menuentry "Xen Linux 2.6.32.27" { insmod ntfs set root='(hd0,2)' loopback loop0 /ubuntu/disks/root.disk set root=(loop0) multiboot /boot/xen.gz module /boot/vmlinuz-2.6.32.27 dummy=dummy root=/dev/sda2 loop=/ubuntu/disks/root.disk ro console=tty0 module /boot/initrd.img-2.6.32.27 } I got error file not found error unknown command 'multiboot' error unknown command 'module' error unknown command 'module' Now to dig this issue further I reboot the machine and go to grub command prompt and manually pass on each of the above parameters which you see in the grub entry when I reached grub> insmod multiboot then I got following message on screen error:file not found. It looks like this wubi+ grub setup has just enough modules to use loopback file on ntfs, but the ACTUAL /boot directory is on the loopback NOT ntfs (hd0,2). Therefore any attempt to read any files from (hd0,2) simply wont work, cause there's no file there.I need to use insmod multiboot and command multiboot and module which are available in grub on a normal install without Wubi.But since the laptop is not mine so I am not allowed to partition it and have to make it work in this situation only. While a normal Kernel is still booting? How can I get module multiboot in this Wubi based install.

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• Safemode Startup Issues on Vista 64 Bit

  - by GnrlBzik

  Before i ask the question, let me point out that this is not a hardware issue. I have a clean install of vista on another hd that runs on same hardware, i am pretty sure its a corruption of a drive or a file, i presume it might be video driver. When windows wont start via normal boot i just get black screen after initial load up of os, so i boot into savemode, I end up having black screen with a mouse pointer visible, after initial load of os. The shut down button is responsive. Of course, I can install clean copy of os, and prior to that can retrieve all other files that i need by accessing hd itself, i can restore my pc from my external back up as well. Although i have all these options, i was wondering if there anything else i can do that can help me fix this issue. In save mode, it looks like I am capable of logging in after initial load of os, even though i cant see the process it self, i do see the mouse pointer. By visual memory i navigated to password field, and entered my password, hit enter, I get the loading mouse pointer, nothing really changes, same black screen and mouse pointer, but when i tried to access task manager for a second i got a safemode watermark at all four corners. Any help would be appriciated. Thank you in advance.

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• Win2008: Boot from mirrored dynamic disk fails!

  - by Daniel Marschall

  Hello. I am using Windows Server 2008 R2 Datacenter and I got two 1.5TB S-ATA2 hard disks installed and I want to make a soft raid. (I do know the disadvantages of softraid vs. hardraid) I have following partitions on Disk 0: (1) Microsoft Reserved 100 MB (dynamic), created during setup (2) System Partition 100 GB (dynamic) (3) Data partition, 1.2TB (dynamic) I already mirrored these contents to Disk 1. Its contents are: (1) System partition mirror, 100 GB (dynamic) (2) Data partition, 1.2 TB mirror (dynamic) (3) Unusued 100 MB (dynamic) -- is from "MSR" of Disk 0, created during setup. Since data and system partition are mirrored, I expect that my system works if disk 0 would fail. But it doesn't. If I force booting on disk 0: Works (I get the 2 bootloader screen) If I force booting on disk 1 (F8 for BBS), nothing happens. I got a blank black screen with the blinking caret. I already made disk1/partition1 active with diskpart, but it still does not boot from this drive. Please help. Both partitions are in "MBR" partition style. They look equal, except the missing "MSR" partition at the partition beginning (which seems to be not relevant to booting). Regards Daniel Marschall

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• Creating Custom ISO Images

  - by ericl42

  I am working on creating some custom ISO images using primarily Fedora and CentOS. I want the image to be a bootable live CD with some specific files on it. I also want it to have the option to be able to be downloaded to the hard drive. I've read some various articles but want to get a few more opinions since I've never done this before. Currently I'm trying 2 different methods. Install Fedora with the configuration exactly how I want it and then run the livecd-tools program to pull everything I currently have to an ISO. I haven't got this to work yet but I do see a few issues with it. Such as the default passwords I had to put in. Run a Fedora live CD and install a few things I want on it and then copy the image of it. I believe this would work better since it has more of a live cd feel. However I"m not 100% sure how I should go about pulling the current image to my own ISO. I know some people have said to use mkisofs and a few other programs but any advice would be greatly appreciated.

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• Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most

  - by Henno

  Problem Network speed between a VM and another machine which is not residing on the same host, is 11MB/s at most. Topology Facts ESXi5 version is 5.0.0.504890 VM has the latest Vmware Tools installed VM is using E1000 network driver Physical box has Win Srv 2008 R2 as the OS CrystalDiskMark says the drive on physical box can read/write 100MB/s vCenter is another vm on esx both vm and physical box are showing 1Gbps link speed Configuration Networking shows vmnic0 as 1000 Full NTttcp is a client/server tool from Microsoft for measuring pure network throughput Here's what I've done so far: Test1: VM is running Filezilla FTP Server (default settings, one user account made) Physical box is running Filezilla FTP Client (default settings) Physical box is uploading a big file to FTP server Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Physical box is downloading that file from FTP server Transfer speed (as observed by Windows Task Manager on both machines): still ~11MB/s (bad) Could it be disk performance issue? Test2: Physical box is running ntttcpr.exe -a 6 -m 6,0,VM_IP_ADDRESS VM is running ntttcps.exe -a 6 -m 6,0,PHY_BOX_IP_ADDRESS Transfer speed (as observed by Windows Task Manager on both machines): ~11MB/s (bad) Could it be switch performance issue? Test3: physical box is running vSphere Client I open Summary Storage datastore Browse Datastore... from physical box and upload a file to datastore Transfer speed (as observed by Windows Task Manager on physical box): ~26-36MB/s (good) Could it be a vm specific issue? Test4: Installed ntttcp to another vm on the same esx server Measured network performance between vms on the same esx server with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~90-120MB/s (excellent :) Test5: I have another esx server on the same site, connecting to the same datastore and same switch. Those two ESX servers have both 2 NICs. One NIC goes to switch while the other goes directly to the other ESX server. vMotioned one of the testing vms off to the other ESX host Measured network performance between vms on different esx servers with NTttcp Transfer speed (as observed by Windows Task Manager on physical box): ~11MB/s (bad) While I'm aware of these: ESXi 4.1 slow file transfer ESXi 5 network performance is slow Debian Etch and ESXi slow network speeds VMWare ESXi slow file copy to guest they did not help (or I must have been missed something)

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• Data Store/Volume disconnecting. How to resume copy of VMDK?

  - by Serge

  I'm having an issue with my ESXi 4.1 hosts losing the datastore with FC SAN after a power outage. All 3 hosts disconnect so it's definitely a SAN issue. I've tried to resolve the issue on the SAN side with the SAN software support and Adaptec hardware support. No luck there. So I'm stuck with a SAN that will randomly disconnect the volume. I need to get the virtual machines (VMDK files) from the datastore. The problem is I can only get 5-20% before the data store disconnects. I have backups that are slightly older that I can use to replicate the VMDK differences to. What has not worked so far: Powering up the VMs, will boot up for 5-15 minutes then freeze vCenter migrate or clone of VM, will fail after similar period of time vCenter copy/paste of VMDK. Was able to get one 30GB VMDK and no luck after that. vMware Data Recovery. Fails at low %, can't resume, so next backup starts from begining. Veeam Backup & Recovery. Same as above, no resume function. If I can just find a backup solution that will resume from the failed spot that would solve my issue. Anyone have any ideas that I could try? EDIT 1 The SAN is Open-E DSS 6 running on a Supermicro 24 drive enclosure with 4 port Qlogic FC. Adaptec 52445 RAID card.

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• What is the recommended glusterFS configuration for a growing website?

  - by montana

  Hello, I have a website that is tracking towards 50 million hits per day average, and within the next 3 months should be over 100 million hits per day. We are trying to use GlusterFS v 3.0.0 (with latest patches as of 1-17-2010) Currently, we've just upgraded to a load balancer environment that has 3 physical hosts with 6 Xen-Server 5.5u1 VM's (2 on each host) to serve webpage traffic. Each machine has 6 Raid-6 local storage drives (7200RPM-SATA). The old machine we came from had 1 mirrored SAS 10k drive. We also set up glusterFS currently with 3 bricks, one on each host, and it is serving the 6 VM's as clients. In testing, everything seemed fine. However when we went to production, it seemed that there just wasn't enough I/O's available to serve traffic even upwards of 15mil hits. Weeks prior, our old server was able to handle traffic, maxed out, at 20mil. Is there any recommended configurations for such an application, or things to be aware of that isn't apparent with their documentation at gluster.org for a site our size?

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• mkfs Operation Takes Very Long on Linux Software Raid 5

  - by Elmar Weber

  I've set-up a Linux software raid level 5 consisting of 4 * 2 TB disks. The disk array was created with a 64k stripe size and no other configuration parameters. After the initial rebuild I tried to create a filesystem and this step takes very long (about half an hour or more). I tried to create an xfs and ext3 filesystem, both took a long time, with mkfs.ext3 I observed the following behaviour, which might be helpful: writing inode tables runs fast until it reaches 1053 (~ 1 second), then it writes about 50, waits for two seconds, then the next 50 are written (according to the console display) when I try to cancel the operation with Control+C it hangs for half a minute before it is really canceled The performance of the disks individually is very good, I've run bonnie++ on each one separately with write / read values of around 95 / 110MB/s. Even when I run bonnie++ on every drive in parallel the values are only reduced by about 10 MB. So I'm excluding hardware / I/O scheduling in general as a problem source. I tried different configuration parameters for stripe_cache_size and readahead size without success, but I don't think they are that relevant for the file system creation operation. The server details: Linux server 2.6.35-27-generic #48-Ubuntu SMP x86_64 GNU/Linux mdadm - v2.6.7.1 Does anyone has a suggestion on how to further debug this?

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• Windows 7 Explorer keeps crashing

  - by Daniel Liang

  I currently have an issue with Windows Explorer. It keeps crashing when I browse through a network drive. This is happening on several computers. I have already obtained a crash dump file but it doesn't state much: Microsoft (R) Windows Debugger Version 6.12.0002.633 X86 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [C:\LocalDumps\explorer.exe.3964.dmp] User Mini Dump File with Full Memory: Only application data is available Symbol search path is: SRV*c:\websymbols*http://msdl.microsoft.com/download/symbols Executable search path is: Windows 7 Version 7601 (Service Pack 1) MP (2 procs) Free x86 compatible Product: WinNt, suite: SingleUserTS Machine Name: Debug session time: Mon Oct 21 11:21:30.000 2013 (UTC - 4:00) System Uptime: 0 days 0:06:20.449 Process Uptime: 0 days 0:05:54.000 ................................................................ ................................................................ .... Loading unloaded module list ............. This dump file has an exception of interest stored in it. The stored exception information can be accessed via .ecxr. (f7c.fe4): Access violation - code c0000005 (first/second chance not available) eax=00000000 ebx=07a3f080 ecx=00000400 edx=00000000 esi=00000002 edi=00000000 eip=76e170f4 esp=07a3f030 ebp=07a3f0cc iopl=0 nv up ei pl zr na pe nc cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000 efl=00000246 ntdll!KiFastSystemCallRet: 76e170f4 c3 ret I've already tried removing certain context menu items. I disabled all unnecessary start-up items. Ran memtest86 and it looks fine on that end. It also happens when I browse through my local disk. Can anyone take a look into this? Thanks!

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• Setting Windows 7's Recycle Bin to automatically have a default disk space allocation for deleted files from newly mounted drives

  - by galacticninja

  How do I set Windows 7's Recycle Bin to automatically have a default disk space allocation for deleted files from external hard drives and TrueCrypt-mounted volumes? I remember in Windows XP, I can set a percentage of total disk space that will automatically be used as storage capacity for deleted files by the Recycle Bin, and this will be applied to all external HDs or TC-mounted volumes. Windows 7 defaults to the 'Don't move files to the Recycle Bin. Remove files immediately when deleted' setting for newly mounted external HDs and TC mounted volumes. Since I am expecting deleted files to go to the Recycle Bin, sometimes this causes an 'Oops' when I delete files in external hard drives or TC mounted volumes, as Windows does not move deleted files to the Recycle Bin, but just deletes the files permanently. I have to remember to manually set a custom Recycle Bin storage space for each new drive that is mounted by Windows to avoid this issue. I only use and mount TrueCrypt file containers, not drives. I also don't mount TrueCrypt file containers as removable drives. ('Mount volume as removable medium' is unchecked in Mount Options.) In my $Recycle.Bin > Properties > Security settings, 'System' and 'Administrators' are already set to 'Full Control', while 'Users' only have 'Special Permissions' checked in gray. There are no other groups. I haven't changed or edited anything in these settings. I am using Windows 7 Ultimate.

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• Mystery 0xc0000142 error on starting java from a service, as a different user.

  - by cpf

  This is a very convoluted setup, but effectively this is what goes down: Manager service (which I don't have control over) running as admin user X starts my executable, which then starts Java as user Y using the standard c# StartInfo.Username/Password controls. Now, from a basic (not elevated or anything, just admin) command prompt I can run that executable, and Java pops up and works fine, running perfectly under the user it should be. When the service runs the same executable, however, Java silently fails. The only hint I see is this series of events in the event viewer: Service starts "Application popup: java.exe - Application Error : The application was unable to start correctly (0xc0000142). Click OK to close the application. " (googling this reveals a lot of scam sites telling me to use their "free antivirus to fix 0xc0000142 errors easy!"... sigh) Service stops (the java shutdown propagated, which is supposed to happen) And here's what process explorer has for the failure: As you can see, everything shows as a success. Now, I think this might have something to do with the permissions (the user java.exe is running under has traverse permission for the entire drive and full permissions to Directory A, which is where the .jar is), but I just can't fathom how something that works fine from the command line (and, this is an upgrade, the previous system without the user-switching aspect works fine from the service) can fail with such a cryptic message and little showing up in logs.

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• mysqld refusing connections from localhost

  - by Dennis Rardin

  My mail server (Ubuntu 10.04) uses mysql for virtual domains, virtual users. For some reason, mysqld has started refusing connections from localhost. I see these in the mail server log: Oct 6 00:31:14 apollo postfix/trivial-rewrite[16888]: fatal: proxy:mysql:/etc/postfix/mysql-virtual_domains.cf(0,lock|fold_fix): table lookup problem and: Oct 7 13:39:15 apollo postfix/proxymap[25839]: warning: connect to mysql server 127.0.0.1: Lost connection to MySQL server at 'reading initial communication packet', system error: 0 I also get the following in auth.log: Oct 6 22:33:31 apollo mysqld[31775]: refused connect from 127.0.0.1 Telnet to the local port: root@apollo:/var/log/mysql# telnet localhost 3306 Trying ::1... Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. Connection closed by foreign host. root@apollo:/var/log/mysql# I am not sure why this started happening, but there was a disk failure in a RAID 1 pair a bit earlier that day. So it's possible I have a damaged config file or something. But mail was working for at least an hour after the drive event, so who knows for sure? phpmyadmin works fine, and the databases themselves look like they're intact. I think/believe that selinux and iptables are disabled and not running. So ... why is mysqld refusing connections from localhost? What should I check? What processes might cause this if a .conf file or possibly a binary was damaged? Which other log files might contain clues? I've enabled "general logging" in /etc/mysql/my.cnf, but I get no interesting or informative entries there. Thanks, m00tpoint

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• Mysterious Windows 7 slowdown problem

  - by cletus

  I have a fairly beefy machine: Intel Q9450 8GB DDR2800 (4x2) Intel X25-M G2 80GB SSD Several other hard drives Windows 7 Ultimate 64 In the last month I've gotten a mysterious slowdown problem. When I start my IDE (IntelliJ IDEA) it usually takes about 20 seconds on the SSD. If my machine has been on for a day or two (as far as I can tell this is the only pattern) and I try to start the IDE, it brings my machine to a halt. CPU usage goes up to 25% per core (so it's basically 100% usage) and it takes up to 5 minutes to start. Other things I've noticed: iTunes will start to skip and stutter (my music is running off a second hard drive). The only persistent things I'm running are: AVG Anti-Virus Spybot (the slowdown predates this) Hamachi and Murmur (again the slowdown predates this) Apple Airport Base Agent HP OfficeJet 8500 driver/manager The browser I use is Chrome. I can't think why that'd be relevant but it's always on so I thought I'd mention it. When this happens I can't see a reason for it in the process list. No CPU hogs. No spikes in IO activity that I can see. Basically I'm at a loss to explain it and need to reboot, at which point everything returns to normal (for awhile). FWIW the Intel SSD is about 75-80% full. I know being too full can really degrade performance. I don't believe that's the issue here. Does anyone have any ideas on what I can do to fix this or at least help find what's going wrong? This same machine (sans SSD) could run Win XP and stay up fine for a month or two.

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• Symantec Backup Exec 12 Tape Alert.

  - by Adam

  Every day, I run 5 backups using 6 tapes. Each day, when I run the inventory, I get a tape alert Error. This occurs every day, on the same job. The error is: Job 'Inventory Daily ********' has reported Multiple Tape Alerts on server '******' Please refer to job log *****.xml for more information. When i look at the Job log, the Utility Job Information says: The device has reported the following TapeAlert diagnostic information Information- The library has been manually turned offline and is unavailable for use. Robotic library for device: PV132T 500 Warning - Library security has been compromised. Robotic Library for device: PV132T 500. Critical - The library has detected a inconsistency in its inventory. 1.Redo the library inventory to correct the inconsistency. 2. Restart the operation. Check the applications users manual or hardware users manual for specific instructions on redoing the library inventory. Roboric Library for Device PV132T 500. When I run the same inventory for a second time, the job completes successfully. I am using Symantec Backup Exec 12 running on Windows Server 2008. I am using a Dell Powervault 132T 500 tape drive. If anyone can help me on how to resolve this problem, it would be very much appreciated.

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• 2011 i7 Macbook Pro unable to boot from any Windows CD?

  - by Craig Otis

  I'm encountering issues installing Windows alongside my Lion install. I'm attempting to install from the internal SuperDrive, after using Boot Camp to partition what was a single, HFS+ volume. When holding down Option at boot, the CD appears in the startup list, but upon selecting it, I get a gray screen for 5 minutes, then a flashing white folder. I tried installing rEFIt and using this to boot the CD, but I receive an error about "Not Found" being returned from the "LocateDevicePath", and a mention of the firmware not supporting booting using legacy methods. In the Console, when opening the StartupDisk preference pane (which never presents the CD as a selectable option), I see: 11/25/11 4:39:31.159 PM System Preferences: isCDROM: 0 isDVDROM:1 11/25/11 4:39:31.159 PM System Preferences: mountable disk appeared: /Volumes/GRMCPRFRER_EN_DVD 11/25/11 4:39:33.214 PM System Preferences: - So far so good, passing disk to System Searcher. 11/25/11 4:39:33.218 PM System Preferences: OSXCheck: No boot.efi in System Folder or volume root. 11/25/11 4:39:33.220 PM System Preferences: WinCheck: Not a valid windows filesystem: /Volumes/GRMCPRFRER_EN_DVD 11/25/11 4:39:33.220 PM System Preferences: WinCheck: Not a valid windows filesystem: /Volumes/GRMCPRFRER_EN_DVD I'm at a loss here. I've done my research, but it sounds like most of the rEFIt errors of this nature are caused by installing from a thumbdrive, or an external drive. I'm using the internal SuperDrive. Also, I've tried this with two different disks: A Windows XP SP2 CD A Windows 7 x86 DVD Both are disks I've had around for years, and I've used them reliably in the past. The system is an early 2011 15" Macbook Pro, all firmware updates installed.

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• Everyone can access my Windows 7 Homegroup file shares - Even Windows XP computers.

  - by adriangrigore

  Hi, I have 3 computers in my network, two running Windows 7 and one running Windows XP. I've set up a homegroup on both Windows 7 computers. Also, all computers are in the same Workgroup. The problem is that one of the Windows 7 computers makes all shares accessible to the entire Workgroup instead of just sharing to the Homegroup as it should be. I created the file share in Windows 7 via right-click in the explorer, then click on "Share For" - "Homegroup (Read/Write)" (translated from German, so the actual wording may be different). Also, when I look at the file sharing properties of that folder, Windows Explorer informs me that Users must have a valid account and password for this Computer to access drive shares. Unfortunately this is not true. Being in the same Workgroup is enough to get access. Homegroup restrictions work as expected on my other Windows 7 computer. When trying to browse those shares from the XP computer, I get a dialog asking for a login and password. What might cause homegroup restrictions to fail and how can I fix this?

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• Production deployment to EC2 with minimal downtime

  - by jensendarren

  I have a simple web application deployed on a large instance with EC2. I now want to deploy the latest code to this server but I want to do this in a way which minimizes downtime and is a smooth as possible for the end user. Here is my plan: Fire up another large instance Install all the software layers on that instance Restore and attach an EBS drive to the instance Deploy our latest production ready code on the new instance Run all tests (including manual testing of the application) (If tests pass) Put a "Site Under Maintenance" notice on the live site. Backup the EBS instance on the live site Detach the EBS instance from the new server and replace with the latest backup Use ec2-associate-address to move the IP address to the new instance Sit back and wait for traffic to start flowing though the new instance Terminate the old instance Does this seem like a good strategy? Are there any tutorials or books that might cover this topic? I have already read Cloud Application Architectures by George Reese, which is an excellent book, but does not cover deployment. Additionally, I know that there are tools that can help with this like RightScale or enStratus which I will use when I start using more than one instance.

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• UPS power requirements for server

  - by captainentropy

  Greetings! So, I just placed an order for a new server. The company recommended that I get a 3000W UPS. (!) As best as I could I calculated the following wattage consumption based on benchmarked data or datasheets provided by the manufacturers of each component: number watts **total watts** MoBo 1 240 240 CPUs (E5540) 2 80 160 RAID cards (3ware) 2 18 36 RAM (6x4GB) 6 3 18 DVD drive 1 7 7 floppy 1 2 2 RE4 drives 8 7 56 WD20 drives 8 6 48 Intel X25 SSD 2 0.15 0.3 total = 567 So that is for the PSU requirements only. The PSUs in the machine are a 720W for the master node and 800W each for two subsystems. That's a total of 2320W that can be delivered by these PSUs. But that is 4X the amount being consumed, at most, by the components. I didn't count case fans or the eSATA card (3W maybe?) or what the PSUs themselves require but assuming I double or triple my calculations I'm not even remotely close to the 3000W UPS I was suggested to get. They run at least $1100. I could get a 2000W for about $750 or a 1500W for $450 and still be well over my estimated power need. I don't think I need a whole lot of run time in the case of a power outage, maybe 20 minutes max, enough time to shutdown if the power doesn't come on within 5-10 minutes. Any thoughts? Am I off on my calculations? Did I overlook something major? If so what are your suggestions for a UPS? Thanks!

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• Is my OCZ SSD aligned correctly? (Linux)

  - by Barney Gumble

  I have an OCZ Agility 2 SSD with 40 GB of space. I use it as a system drive in Debian Linux (Squeeze) and in my opinion it's really fast. But I've read a lot on aligning partitions and file systems... And I'm not sure if I succeeded in aligning the partitions correctly. Maybe the SSD could be even faster?? ;-) I use ext4 and here is the output of fdisk -cul: Disk /dev/sda: 40.0 GB, 40018599936 bytes 255 heads, 63 sectors/track, 4865 cylinders, total 78161328 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: [...] Device Boot Start End Blocks Id System /dev/sda1 * 2048 73242623 36620288 83 Linux /dev/sda2 73244670 78159871 2457601 5 Extended /dev/sda5 73244672 78159871 2457600 82 Linux swap / Solaris My partitions were created just by the Debian Squeeze setup assistant. So I didn't care about the details of partitioning. But now I think maybe the installer didn't align it correctly? Actually, 2048 looks good to me (better than odd values like 63 or something like that) but I've no idea... ;-) Help plz! According to some "SSD Alignment Calculator" I found on the web, the OCZ SSDs have a NAND Erase Block Size of 512kB and their NAND Page Size is 4kB. 2048 is divisible by 4 and 512. So are the partitions aligned correctly?

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• Filesystem fragmentation on the level of set of files

  - by trismarck

  The file is stored in blocks by the file system. The block is the smallest amount of data the file system can assign to store a file. The classical definition of a fragmented file is that the file is stored in blocks that are 'scattered' (that are physically non-contiguous) around the hard drive. What I want to ask about is this second type of fragmentation I've came up with. Lets suppose we install a program. This program has very many files. When the program starts, the program always loads the contents of those files sequentially. Now, even if the hard disk is defragmented, there is still a possibility that the files (but not the blocks building up to files) will be scattered on the disk and thus the program launch time will be longer. Actually, this time could be longer due to defragmentation of the disk, as the defragmentation process not only glues fragmented files but also moves some files to optimize free space chunks. The questions: is the type of fragmentation I mentioned relevant for the file system? is it possible to remedy this kind of fragmentation and if yes, how would you do it? Also, I'm not sure if this question should belong to superuser or to serverfault (as I guess the filesystem fragmentation is more important in the server environment).

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• Applications randomly alt-tab? (especially full screen games)

  - by Henry Scotts

  I'm not sure when this began, how it happens, or why it happens, but it is quite bothersome and apparently random. Just randomly throughout the day my computer will just go to the desktop. I could be in a full screen game and it will just immediately alt tab and present the desktop. Or I could be watching a movie and this happens. Sometimes it happens once every three hours and other times (just today actually) it did it twice in the span of 30 seconds. I am positive I am not pressing a hotkey because I launched a game, sat idle, and noticed it alt tab while cleaning up around my room after about 20 minutes. Sometimes it goes days without this happening. Specs: Windows 7 Ultimate 64 Bit, 10 gigs of RAM, GeForce GTX 260, Intel Xeon CPU. I also have basically nothing running when it happens other than the game and FireFox. My FireFox add-ons: Adblock Plus, Download Statusbar, Firebug, FirePHP, lazarus form recovery, tree-style-tabs, yslow. I doubt FireFox is causing the issue but I figured I'd include it anyway because it is the only application I have running when it happens. As for user processes I have running: VCDDaemon (context menu for virtual clone drive), razerhid (mouse), OSD, taskhost, dmw (desktop window manager), anyfullscreengame, audiorepeater, netsession_win, explorer, razerofa, tsvncache, firefox, plugin-container, and EKIJ5000MUI (printer). Whew. Okay. That was a lot of information. If someone could diagnose this I would be most grateful for this has been around with me for years.. Thanks for reading! PS: I doubt it's a virus because I never download illegal software and pretty much only browse Reddit and Stackexchange and play games. If it was a virus it would be a pretty lame one.. Hah..

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