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• Disk Utility Restore causes "Could not validate resource - Invalid Argument"

  - by Yahoo

  I have a problem with Disk Utility on Mac OS X 10.6. I have an image of Windows that I would like to use as a bootable volume on a pen drive or external hard drive. The thing is: When I try to restore the volume from the image I get an error: "Restore Failure: Could not validate resource - Invalid Argument" I read some information about that error on the Internet. I converted the image into .iso (Mac OS Extended/ISO (Joliet) Hybrid Image) format and then got this error: "Restore Failure: Could not find any scan information. The source image needs to be imagescanned before it can be restored." When I try to scan the image for Restore, I get the first message. I really read a lot of information about this topic on the Internet, but I haven't found the solution. I tried both ISO and DMG formats; I don't know which is best.

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• fsck: FILE SYSTEM WAS MODIFIED after each check with -c, why?

  - by Chris

  I use a script to partition and format CF cards (connected with a USB card writer) in an automated way. After the main process I check the card again with fsck. To check bad blocks I also tried the '-c' switch, but I always get a return value != 0 and the message "FILE SYSTEM WAS MODIFIED" (see below). I get the same result when checking the very same drive several times... Does anyone know why a) the file system is modified at all and b) why this seems to happen every time I check and not only in case of an error (like bad blocks)? Here's the output: linux-box# fsck.ext3 -c /dev/sdx1 e2fsck 1.40.2 (12-Jul-2007) Checking for bad blocks (read-only test): done Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Volume (/dev/sdx1): ***** FILE SYSTEM WAS MODIFIED ***** Volume (/dev/sdx1): 5132/245760 files (1.2% non-contiguous), 178910/1959896 blocks

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• How to determine non-movable files in Windows 7?

  - by David

  Is there a way to determine which unmovable files are preventing Shrink Volume from releasing the full potential free space? Background: I have a 90 GB partition with Windows 7 on it, and 60 GB free space. I want to shrink it down to about 40 GB, and use the reclaimed 50 GB for a separate data partition. The Shrink Volume tool in Disk Management is only willing to give me 8 GB back. My understanding is that this is because of immovable files. I've followed the instructions found here, which involved disabling hibernation, pagefile, system restore, kernal dump, making sure all related files were deleted, and defrag'ing. I have successfully followed those same instructions before on this same drive, and partitoned the original 150 GB space into 90 GB and 60 GB, but I'm not so lucky this time.

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• Is it secure to store the cert/key on a private AMI?

  - by Phillip Oldham

  Are there any major security implications to bundling a private AMI which contains the private key/certificate & environment variables? For resiliency I'm creating an EC2 image which should be able to boot and configure itself without any intervention. After boot it will attempt to: Attach & mount specific EBS volume(s) Associate a specific Elastic IP Start issuing backups of the EBS volume(s) to S3 However, to do this it will need the private key/pem files and will need certain environment variables to be available on start-up. Since this is a private AMI I'm wondering if it will be "safe" to store these variables/files directly in the image so that I don't need to specify any user-data information and can therefore start a new instance remotely (from my iPhone, if needed) should the instance be terminated for any reason.

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• MPlayer refuses to generate mono wav file

  - by JCCyC

  I want to downsample an existing audio file to 8KHz mono. This command line downsamples it to stereo: mplayer -quiet -vo null -vc dummy -af volume=0,resample=8000:0:1 -ao pcm:waveheader:file="/tmp/blah1.wav" ~/from_my_cellphone.3ga It generates a file that the file utility identifies as stereo: $ file /tmp/blah1.wav /tmp/blah1.wav: RIFF (little-endian) data, WAVE audio, Microsoft PCM, 16 bit, stereo 8000 Hz Now, if I read the documentation correctly, I should add pan=1:0.5:0.5 so I get a file that's half the size: mplayer -quiet -vo null -vc dummy -af volume=0,resample=8000:0:1:pan=1:0.5:0.5 -ao pcm:waveheader:file="/tmp/blah2.wav" ~/from_my_cellphone.3ga But it doesn't! blah2.wav is identical to blah1.wav! What am I doing wrong?

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• Why has my Mac been running fsck_hfs for two days now?

  - by Nate

  I first noticed that fsck_hfs was running, taking up 50-75% of a CPU, yesterday. It continues to run today. ps shows that it is doing /sbin/fsck_hfs -f -n -x -E /dev/disk3. Only problem: I don’t think I have a /dev/disk3. Why is it running? Will it ever finish? Can I kill it? What is /dev/disk3? Could it be my Time Machine volume, which is not mounted at the moment? System Info: MacBook Pro (2008). It has two disks installed—the internal disk (/dev/disk1) and a PC Card SSD (/dev/disk0, surprisingly). It connects to a remote Time Machine volume attached to an Airport Extreme base station.

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• Should I run my own MTA?

  - by Mascarpone

  I need to send a large volume of emails, roughly 60.000 per week. At the moment we outsource this service to a third party, and we expect to double our volume within the next 6 months. Since the service is starting to be too expensive, I was thinking about setting up our own MTA. Our own SysAdmin told us it is not difficult at all to have our own MTA, but I'm afraid he might have oversimplified this. Is it difficult to handle a MTA? Should I be afraid that my MTA will lose the company mails? Should I stay with a third party service? p.s: The emails have been collected respecting the local legislation on privacy, so no spam.

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• From which plex am I booted from on raid?

  - by rumburak

  I have a server with mirrored boot volume. It is software raid 1 in Windows Server 2008 R2. I do not have physical access to the server. I am looking for a way to check which disk is a boot drive. I need a way to check it from os. How can I do that ? EDIT: I know how to do that, but I dont think its proper way. From diskpart I can break mirror: select volume 0 break disk=0 And Windows will only allow me to do that on not current boot disk. I want to check which one is boot without breaking mirroring.

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• Forgot to unmount/eject external hard drive, lost moved files. Mac OS X

  - by balupton

  So I was using my Mac with my external hard drive connected via USB. I moved about 10 GB of data to it (via drag and drop while holding down the Command key to move the files rather than to copy them). They moved to the drive all right, but as I was having some issues and the Finder crashed after the transfer, I was unable to eject the volume and later everything froze so I had to do a hard restart (hold the power button). When I remounted the volume (plugged the external hard drive back in) it no longer had any of the files which I moved onto it. As it was a lot of data, how can I recover these files?

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• Force ID of user created by apt-get

  - by Bart van Heukelom

  Context: I'm automatically installing postgresql-9.1 on an Ubuntu server with apt-get. This creates the required postgres user. The Postgres data is on an external volume that survives reinstalls. This data is obviously owned by the postgres user. The problem I'm having is that the ownership is not recorded under the name postgres, but under the UID that postgres had at creation time. When the server is reinstalled, postgres sometimes gets a different UID, and no longer owns the data directory, and thus does not work. Question: Can I force the UID of the user postgres created by apt-get to something fixed? Or is there another way to solve my problem? (As you may have deduced, this is on Amazon EC2 with the data on an EBS volume)

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• Looking for a way execute a task on all files in a directory (recursively) on Windows

  - by stzzz1

  I have a huge number of mp4 video files that needs to have a volume boost. I need a way to execute a ffmpeg audio filter on all files in a specified base directory (and in subdirectories as well). My problem is that I'm working on a Windows computer and I have no knowledge of its shell syntax. I would like to do the equivalent of what this bash script does : TARGET_FILES=$(find /path/to/dir -type f -name *.mp4) for f in $TARGET_FILES do ffmpeg -i $f -af 'volume=4.0' output.$f done I spent quite some time this afternoon looking for a solution but the recursive nature of what I need (that is so simple with find!) isn't too clear. Any help would be greatly appreciated!

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• How to permanently disable Firefox Flash plugin sound in Win 7 now that plugin-container.exe is here

  - by Subuser

  I want Flash to play without sound on my machine, and I want that preference to stick so that new sessions don't surprise me with sound. Using FlashBlock while trying to remember to disable sound every time a flash window is started doesn't do the trick for me -- it's too difficult to remember to check the mute status before and after playing videos. Previously, using Win 7 and Firefox, one could selectively disable sound from Flash plugins using the method described in this question. Older methods of disabling it included the plugin called FlashMute. FlashMute fails me even when this trick has been employed, and the volume method described in the previous question only works for the currently live session, resetting sound to maximum volume whenever the plugin container is restarted. What is the best way to disable Flash sound?

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• What happens when I delete the first of several AWS EBS snapshots?

  - by Jepper

  On http://aws.amazon.com/ebs/pricing/ it says: "EBS Snapshots [...] For the first snapshot of a volume, Amazon EBS saves a full copy of your data to Amazon S3. For each incremental snapshot, only the changed part of your Amazon EBS volume is saved." I intend to snapshot some of my instances daily and keep snapshots for 7 days after which the snapshots are destroyed. What happens when, eventually, I destroy the first snapshot? Will the subsequent snapshots be worthless given the first is no longer available?

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• Dry length of buoy in OrcaFlex

  - by KAE

  I use a software package called OrcaFlex to model the behavior of a buoy in ocean waves. I would like to share OrcaFlex questions in this forum - hope some users are out there! Here is a starter question: For a 6D buoy, I extracted the 'Dry Length' after the simulation completed. The value of the Dry Length sometimes slightly exceeds the actual height of the buoy, even though this would not seem to be possible given the formula from the manual, Dry Length = (cylinder length) × (cylinder volume above surface) / (cylinder total volume). Any insights?

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• Decrypting a TrueCrypt drive pulled from another machine

  - by Blakeg08

  I work in a corporate environment and we are now required to encrypt laptops. I have already encrypted about 5 or 6 out of 40. I still have a few questions before we go all out with TrueCrypt. Can I decrypt a hard drive by plugging it into my desktop using a data transfer kit? I tried this and the hard drive showed up asking me to format before using the volume. If I have the TRD from each laptop backed up do I still need to backup the volume headers? What else do I need to back up? Thanks.

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• Mount drive at /Volumes/NAME/ or similar in Cygwin

  - by Adam

  Hi.. I'm using Cygwin on Windows 7. When I plug in an USB stick, the drive automatically gets mounted to /cygdrive/x . This is good and really easy to use. My problem is that the drive letter changes sometimes, and when I've got remotes set up in git - I've got one called usb at /cygdrive/h/ - this sometimes doesn't work and I have to change the remote URL. That's just an example, there are other scenarios where I wouldn't want it to change. I like what the Mac does, and puts mounts a volume at /Volumes/STICK (STICK is the Volume name of my usb stick). Is there any way I can do this, or something similar under Cygwin. Thanks

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• Do you lose everything when you have a hard disk failure in a multi-hard disk LVM that does NOT use RAID?

  - by user72630

  I'm debating about using LVM for a media/file server because I would like to combine multiple physical hard disks into one volume. I do not wish to use any RAID in my LVM so my question is: If one of the multiple hard disks in my volume were to go down would I lose all my data or would I just lose the data that was stored on that individual disk? Also, if I were to just lose the data on the individual disk, would it be as simple as replacing that disk and restoring what was on it from a backup to recover? Thanks everyone.

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• How to recover data from Dell dimension 9150 RAID 0 on another system?

  - by Adam

  I have a Dell Dimension 9150 which has failed. I'm trying to recover the data. It had two SATA 250GB drives in RAID 0 configuration. I'm trying to use a shuttle PC running Windows7 to recover the data from the drives which contained an XP boot volume. I just want the data, it doesn't have to boot. What program would I need to rebuild / interrogate the drives (one of them is failing the onboard hardware test)? What drivers would I need to install? Windows7 sees the drive as one partition but doesn't see volume information. Ubuntu can see the drive as one partition and also can tell what the drive is called, but can't access the data Any help appreciated!! :)

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• Linux/OS X dualboot on a Macbook Pro with RAID

  - by GaretJax

  I'd like to install Gentoo Linux on my Macbook Pro by keeping my current OS X installation. I currently have OS X installed on a RAID 0 on two 160GB Intel SSDs and I'd like to create a new partition for Gentoo alongside OS X without losing the RAID setup but, from what I read on the net, Apple's software RAID is poorly (read "not at all") supported: BootCamp refuses to create a windows partition on a RAID volume rEFIt is not able to boot an OS from a software RAID even Apple's recovery partition for Lion can't be created on a RAID volume Is there a way to dual boot my Macbook while keeping the RAID solution?

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• Windows Explorer - How can an large file have a zero "Size on disk" value? What does it mean

  - by Jaans

  I would expect some discrepancy between "Size" and "Size on disk" in Windows Explorer due to file system allocations etc. Below is a screenshot of an example file on a Windows 2012 R2 file server that has a 81.4 MB "Size" but for the "Size on disk" it's 0 bytes. What gives? I have other files doing the same, but yet another set of files and folders behaving as expected showing the size on disk relatively close to the actual file size. The volume is a basic disk, formatted with NTFS and the default 4K allocation units. No compression is set for any file or folder on the volume. (For those more paranoid, I did a malware scan, and also confirmed there is not ADS streams associated with the file in question). The user account running Windows Explorer is the domain administrator, and the file owner is also the domain administrator. Thanks for reading!

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• Losing file permissions after rebooting Windows 7

  - by SMTF

  I have a User directory full of files that are not accessible permission wise for the user who's home directory it is. Said user can't run Explorer. For example, it provides an error complaining that permission is not available for required files. I tried various ways to give said user permission of his home directory and things are fine until after rebooting the machine; the permissions reset to the previous state and the problem persists. I followed the solution outlined here. And again things worked until I reboot the machine. I'm in this mess because I replaced a corrupted user profile as outlined here. The original user and the new replacement on are/where both admin accounts. In case it is relevant I will mention that the Users directory is not on the C volume but a D volume on the same machine. Any insight is appreciated.

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• Sound has stopped working after upgrading to Windows 8

  - by Max

  I upgraded my (fairly new, about 2 months old) computer to Windows 8 last night, and now the sound has stopped working across the entire machine. I have checked using multiple programs (iTunes, YouTube, World of Warcraft, etc) and multiple output devices (speakers and headset), checked the soundcard drivers (Asus Xonar DG 5.1), checked the volume mixer to ensure I wasn't just having a brainfart and had the sound muted, but nothing's working. Does anyone have any advice on what could be causing this? Thanks Max

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• Sharing a symlinked (`mklink /d`) directory via SMB?

  - by Alois Mahdal

  I have a Windows 7 amd64 box where one directory is shared: local path is d:\drop\ remote path is \\aloism\drop from SMB point of view, Everyone has Read and Write permission ACLs for the folder are set so that all authenticated users have read and write permissions:NT AUTHORITY\Authenticated Users:(OI)(CI)C (which is inherited to all levels below) Now I create a symbolic link within the structure of the directory: D:\drop>mklink /d tools2 tools symbolic link created for tools2 <<===>> tools The problem is that I can't access this new directory from any of the remote machines (a Windows 7 box and a Windows XP box—both behave the same way): C:\>dir \\aloism\drop\tools2\ Volume in drive \\aloism\drop is droot Volume Serial Number is FA73-1897 Directory of \\aloism\drop\tools2 File Not Found How can I make it work? Possibly also for files?

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• How can I run fsck on a disk image via Mac Terminal?

  - by mvizual

  I want to run fsck on a disk image before I use it to restore (replace) a corrupted volume. Using Terminal, what would be the proper command, syntax, and options for this operation? I've just recently become acquainted with Terminal and line commands, so syntax and specific options aren't part of my computing vocabulary. I'm using Terminal 2.1.2, bash, OS 10.6.8. Ultimately, I'm trying to restore an image to a secondary startup volume (external drive). The image is mounted on my desktop and I want to check it for errors before I use it. Disk Utility runs "repair disk" successfully but the integrity of the image is suspect.

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• How to un-partition a drive on windows 7

  - by Michael Rentmeister

  I bought this laptop used from a friend. The laptop has 500gb of storage; however, the drive is partioned. The C: drive has an allocated space of 50gb whereas the partition has 396gb allocated to it. How do i either take some of the space from the partition and move it to the C: drive, or get rid of the partition? I've done some searching and people say I'm supposed to be able to use "Disc Management" to "delete volume," but when i right click on the partition the "delete volume" is not enabled. Here is a picture:

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