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  • Writing photos (and other things) to disk and getting them later in iphone

    - by ebabchick
    I'm trying to write an image to disk: NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsPath = [paths objectAtIndex:0]; NSString* savePath = [documentsPath stringByAppendingPathComponent:@"photo"]; BOOL result = [data writeToFile:savePath atomically:YES]; if(result) NSLog(@"Save of photo success!"); Then, later, I try to retrieve for a table view cell image: NSData* getPhoto = [NSData dataWithContentsOfFile:[leaf content]]; UIImage* myImage = [UIImage imageWithData:getPhoto]; cell.imageView.image = myImage; Yes, I checked to make sure the [leaf content] returns the same NSString as savePath. What else could be the problem? [NSData dataWithContentsOfFile:[leaf content]]; returns nil.... Thanks guys

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  • Improve disk read performance (multiple files) with threading

    - by pablo
    I need to find a method to read a big number of small files (about 300k files) as fast as possible. Reading them sequentially using FileStream and reading the entire file in a single call takes between 170 and 208 seconds (you know, you re-run, disk cache plays its role and time varies). Then I tried using PInvoke with CreateFile/ReadFile and using FILE_FLAG_SEQUENTIAL_SCAN, but I didn't appreciate any changes. I tried with several threads (divide the big set in chunks and have every thread reading its part) and this way I was able to improve speed just a little bit (not even a 5% with every new thread up to 4). Any ideas on how to find the most effective way to do this?

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  • USB device Set Attribute in C#

    - by p19lord
    I have this bit of code: DriveInfo[] myDrives = DriveInfo.GetDrives(); foreach (DriveInfo myDrive in myDrives) { if (myDrive.DriveType == DriveType.Removable) { string path = Convert.ToString(myDrive.RootDirectory); DirectoryInfo mydir = new DirectoryInfo(path); String[] dirs = new string[] {Convert.ToString(mydir.GetDirectories())}; String[] files = new string[] {Convert.ToString(mydir.GetFiles())}; foreach (var file in files) { File.SetAttributes(file, ~FileAttributes.Hidden); File.SetAttributes(file, ~FileAttributes.ReadOnly); } foreach (var dir in dirs) { File.SetAttributes(dir, ~FileAttributes.Hidden); File.SetAttributes(dir, ~FileAttributes.ReadOnly); } } } I have a problem. It is trying the code for Floppy Disk drive first which and because no Floppy disk in it, it threw the error The device is not ready. How can I prevent that?

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  • hp dl580 g5 diag error

    - by maruti
    server disk access is slow, and running insight diagnostics reports this error: Error: 640003 DST Error Error: 640006: The Read and/or Write HARD error rate is above threshold This drive has experienced/recorded error conditions reported by diagnosis and requires replacement"

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  • 16GB Usb Flash Drive shows as 16MB and is unusable

    - by Karim
    i have a sandisk Cruzer 16GB usb flash drive but it started to show up as 16MB. and i cant use it , it tells me that i need to format the drive or "Please insert a disk into drive X" does anyone have any recommadation for any software so i can check the flash drive? Edit: i cant format it since the format fails and well the idea is that it shows as 16MB instead of 16GB

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  • Alternatives to Windows-builtin checkdisk utility for NTFS?

    - by t-a-w
    For some reason Windows 7's checkdisk freezes and doesn't move its progress bar forward for over an hour, while the disk is still supposedly active. Now it's possible that if I left it overnight it would finally figure out how to progress, but are there any other programs with similar functionality I could use instead?

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  • When and why would Windows Explorer lock an external hard disk?

    - by Ngu Soon Hui
    I am quite surprised to see that Windows Explorer is locking my external hard disk. Is there any reason why explorer.exe is holding on to my external hard disk? Before I was trying to detach the external hard disk, I was opening a csproj file using Visual Studio 2008. I made sure that I closed down Visual Studio before trying to detach the external hard disk. There was no other active program except Google Chrome, from what I could see, that was running.

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  • 2 SAN disks failing during the same overnight period

    - by Carl
    We have 2 HP Lefthand SAN servers in separate data rooms. Last week each of the SANs had 1 hard disk fail. They were in different positions on the SANs. Both data rooms are very well protected from power issues with UPS. Any ideas of what could have influenced this? Thanks, Carl

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  • Automate Clonezilla

    - by oidfrosty
    Is there a way to automate process to clone a disk with Clonezilla on different hardwares? we need to make it easier as possible for the final user, right now the process is quite complex edit: grammar

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  • How to use Hardware RAID in Ubuntu Server

    - by user2071938
    I have an Adaptec RAID-Controller and created an RAID-1(Mirroring) succesfully. Now I have installed Ubuntu Server 12.04.3. When I type fdisk -l I get this output: bf@fileserver:~$ sudo fdisk -l Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000 Disk /dev/sda doesn't contain a valid partition table Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000 Disk /dev/sdb doesn't contain a valid partition table Disk /dev/sdc: 80.0 GB, 80026361856 bytes 255 heads, 63 sectors/track, 9729 cylinders, total 156301488 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: 0x0004c454 Device Boot Start End Blocks Id System /dev/sdc1 * 2048 499711 248832 83 Linux /dev/sdc2 501758 156301311 77899777 5 Extended /dev/sdc5 501760 156301311 77899776 8e Linux LVM Disk /dev/mapper/fileserver--vg-root: 75.6 GB, 75606523904 bytes 255 heads, 63 sectors/track, 9191 cylinders, total 147668992 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: 0x00000000 Disk /dev/mapper/fileserver--vg-root doesn't contain a valid partition table Disk /dev/mapper/ddf1_Data: 1000.1 GB, 1000065728512 bytes 255 heads, 63 sectors/track, 121584 cylinders, total 1953253376 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x00000000 Disk /dev/mapper/ddf1_Data doesn't contain a valid partition table Disk /dev/mapper/fileserver--vg-swap_1: 4160 MB, 4160749568 bytes 255 heads, 63 sectors/track, 505 cylinders, total 8126464 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: 0x00000000 Disk /dev/mapper/fileserver--vg-swap_1 doesn't contain a valid partition table The 80 GB HDD is for the System The 1000.2 GB HDD should be for my data. But I'm a bit confused becauser there are listed two 1000.2 GB HDDs, due the Hardware RAID shoudln't there be only one HDD vissible to the OS? (I have two 1000.2 GB HDDs in an Raid-1 Array) dmraid gives me bf@fileserver:~$ sudo dmraid -r /dev/sdb: ddf1, ".ddf1_disks", GROUP, ok, 1953253376 sectors, data@ 0 /dev/sda: ddf1, ".ddf1_disks", GROUP, ok, 1953253376 sectors, data@ 0 so It seems to be ok? But how do I partitionate this disks and which one should I mount(sdb or sda?) Hope you can help me thx Florian

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  • Drive Genius says: "Invalid catalog btree reverse link in node" is this fixable?

    - by bencnscp
    No obvious problems with my Mac OS X 10.5 system, but Drive Genius 1.5.1 says: "Invalid catalog btree reverse link in node" when doing a "Verify" The "repair" and "rebuild" options fail. I did some googling, and the consensus as: 1- Drive Genius is slightly better than Disk Warrior 2- This problem is likely not fixable. My assumed solution is that I should do a full backup and re-format.

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  • Why does a hard disk suddenly look to Windows as if it "needs to be formatted"?

    - by pufferfish
    This is more of a theory question, but what are the reason(s) for a disk to suddenly cause Windows to start saying it "needs to be formatted"? It happens to an IDE disk that I have in a cheap external enclosure, and I can usually get most of the data back by using software like recuva. It's now happened to an internal disk I have. I'm not looking for software to fix this (although links would be appreciated), but rather a low-level explanation as to what gets corrupted on the disk.

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  • Not able to Defrag my drive for shrink even using PerfectDisk on Windows 7

    - by Mithun Sasidharan
    I want to partition my c drive which has over 450gb capacity of which hardly 30gb is being used. I deleted the pagefile.sys and also disabled hibernate and cache memory. I then defragmented and consolidated free space using PerfectDisk 12 and also run a boot time defragmented. Now what remains is Metadata files that preventing me from shrinking the volume beyond half the size if disk. Please tell me what to do?????

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  • I disconnected my cellphone while transferring files to its Mini SD card. Now the files aren't there

    - by Martín Fixman
    I use Ubuntu 9.10, and the MiniSD card shows as having the space used as if there were files. Baobab (the disk usage analyzer) shows that the card only has 118 MB used (of the 401 Ubuntu claims there are). Of course, I already tried the obvious (rebooting the phone, adding and removing files, etc.), but I don't want to format my card, because I still have some files on it, the transfer to my computer is slow, and because I use an old wire it fails often.

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  • Image backup with two Macs

    - by Konzepz
    Hi, My setup is as follows: iMac + Ext. HD in the living room A MacBook I want to create a regular weekly backup flow, that will create an image file for the MacBook (the entire disk image), and save it to the ext. HD on the iMac, meaning -- connect via local network and save the file. What's the best practice/application for this? Thank you.

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  • how to see disk details from linux machine with which command?

    - by jennifer
    hi all subject: LINUX - release.5.4- verify disk details from linux with sfdisk -s I can see the disk capacity as the following: sfdisk -s /dev/cciss/c0d0: 143338560 total: 143338560 blocks but how to see also the disk details as disk manufacture ... etc I try the: , but I not get the right info -(: hdparm -i /dev/cciss/c0d0 /dev/cciss/c0d0: HDIO_GET_IDENTITY failed: Inappropriate ioctl for device

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  • Cloning Windows 7 to Another Machine

    - by trobrock
    I am trying to clone a Windows 7 Install from one machine to others, in a computer lab situation. I have used clonezilla to make an image of the machine's harddrive and then attempted to write that image to a second machine's disk. Everything went fine, but when I try to boot Windows 7 on the second machine I get a blue screen flash and then it tries to run the startup repair tool, which runs unsuccessfully. Is there something new with Windows 7 that keeps it from being cloned like this?

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  • Slow Write Speed on ESXi host

    - by Gregg Leventhal
    I have an ESXi 5.0 free host with an internal datastore of 7.2K 5 disk RAID 5 using a PERC 710 mini RAID controller in a Dell Poweredge R620 Server with 32GB Ram and a 12 Core Xeon. I seem to get slow write speeds in the guests so I checked out ESXTOP and I see 15MB/s write speed there on this host, which is comprable to the guests. What could be causing such horrible write speeds? Is RAID 5 really this slow to write??

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  • How to Mount remote disc as local in Windows 7 and Windows 2003?

    - by Robert
    Is it possible to mount remote file system (on Windows 2003 server) as local disk in Windows 7? I have Windows 2003 server with software RAID and some shares. On another computer with Windows 7 I have software which can access only data form local or USB disks. This solution doesn't work because program doesn't see files in folder: Mount Remote CIFS/SMB Share as a Folder not a Drive Letter Everything is the same LAN.

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  • Corrupted WebSphere Installation

    - by Keith
    When our server's disk fills up, WebSphere gets corrupted (missing resources in the administration console, missing servers, etc.). Is there a way to recover or repair WebSphere instead of reinstalling?

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