Recuva Sd Recovery
Kum Dana
I've got a non responding external harddisk. Recuva is able to get most from it, it takes only very long to get the 1.5 Tb from the disk. How can I pause the recovery? Or might it be an idea to put a pause button in a next version of recuva?
I think that the answer is that if you want to recover a large amount of data then you just have to accept that it will take some time. Or, try to recover in manageable chunks, which - if you have a list of many hundreds of thousands of files - isn't easy.
I've always thought that a pause function would be illogical, as the underlying data is subject to change at any time. But I've just run a test where I opened an instance of Recuva and scanned, then created and deleted a 2kb file, then scanned again and found, and recovered, the file.
I then ploughed through a few pages of the BBC's website, which used several hundred records from the MFT. I opened another instance of Recuva, and a scan showed no sign of my deleted file, as expected. However I could still recover the file in pristine condition from the first instance of Recuva. This indicates that Recuva holds the file's info in memory, and does not recheck when recovering. So a pause would be possible. Recover is after all a non-invasive procedure, if you recover rubbish there's no physical damage.
The OP might mean a pause and restart after a reboot or after some time, when the logic becomes more strained. Perhaps the possibility that a pause could last several days would make a pause function undesirable.
The deleted file was a 2kb text file, so it used one cluster external to the MFT. When it was recovered it contained the same text. I assume (as we all do) that the info about this file, name, size, cluster number was collected by Recuva at scan time and stored in memory. Although the MFT record was subsequently overwritten, the cluster's lcn in memory (from the first scan) was used to retrieve the data - which hadn't been overwritten.
What's more interesting is that if you scan a cd with pics on it, look at them in Thumbnails mode, and then take the cd out of the drive, you can still recover the pics. I don't know if there's a size limits, I've recovered pics up to 650 kb. Other types of file have mixed results. I don't know why anyone would want to do this, but it amuses the geek in me.
On the other hand, if we put para 1 and 2 together, perhaps the text file in para 1 was retrieved from memory and not the disk. I suppose I should do another test this time watching the data cluster with WinHex or something.
No the results would not be saved. Turning the computer off and on will change the recoverablity of some of your data (windows writes files at startup and shutdown, which in turn might overwrite your data).
If a drive isn't as reliable anymore repeated recovery tasks may not be possible though, there was another person having trouble not long ago with a drive that was bad, the conversation was a bit long, but I touched on some things over there:
Download TestDisk & PhotoRec. TestDisk is a free and open source data recovery software tool designed to recover lost partition and unerase deleted files. PhotoRec is a file carver data recovery software tool.
Recuva (/rɪˈkʌvə/)[2] is an undeletion program for Windows, developed by Piriform Software. It is able to undelete files that have been marked as deleted; the operating system marks the areas of the disk in which they were stored as free space.[3] Recuva can recover files deleted from internal and external hard disk drives, USB flash drives, memory cards, portable media players or all random-access storage mediums with a supported file system. Preview thumbnails of intact photos can be displayed in grid view mode and in the side bar.[4][5][6]
Recuva was described by vnunet.com as an "effective tool for undeleting or salvaging files we sent for recycling and deleted, in the past".[7] The program works on FAT, exFAT and NTFS file systems of Windows.[8] It is able to recover lost directory structure and automatically renames files when trying to recover two files of the same name. As of version 1.5.3 it can also recover files from Ext2, Ext3 and Ext4 file systems of Linux.[9]
As with other file recovery programs Recuva works by looking for unreferenced data, but if the operating system has written new data over a deleted file then recovery will often not be possible.[10][11]
I was using recuva to find pictures and videos on a windows xp hard drive, but I keep getting an internal error message. Does anyone know of an alternative program for recovering broken and damaged files?
I'm currently using Recuva to recover some files from an external NTFS disk. It finds the files I'm interested in during it's analysis phase (when tools like test-disk fail to find them at all) and reports them as "Not-deleted" and a big green marker to signify 100% chance of recovery. However when it tries to recover the files I get a "the system could not find the file specified" message. Is there any easy way to recover non-deleted files off of a disc that I can no longer simply access through explorer?
HAve you tried any of these others? Also make sure you are not trying to recover the files from the same drive as you are running the program and moving the data to. That will render the data useless.
Here is another list of top 10 recovery utilities. I tried Recuva on an SD card and it only recovered something that I deleted long time ago. PhotoRec, however, recovered the files that magically disappeared from my card. Just for comparison: Recuva found some 130 files, while PhotoRec found over 700 (after I moved the executable to another drive on my computer).
I am using AutoCAD R14. My operating system is Windows XP professional. Recently, I inadvertently moved many of my AutoCAD files to the trash and then emptied the trash - so they are deleted. The problem is in trying to get them back, if I can. I am using a file recovery program called Recuva. I am using the free version. I was able to recover some of the files and although the Recuva program said their condition was "excellent," when I try to open them AutoCAD gives a message that says "File format is not valid" and then it opens with a blank page, without opening the file. Does anyone have any ideas on what I can do to recover these files (without sending the hard drive to a data recovery center which will charge me $500)?
Recovery programs aside, try doing a search on your PC for all BAK files and SV$ files, and then sort by newest date downward. Then cross your fingers that you may be able to find the backups of the files you lost. Rename the extension of the newest one to DWG and try to open that. If it works, repeat for the rest of the files. Sure, you will have lost some data (it will likely not contain all of the last work you may have done), but it's better than starting from scratch. Good luck!
I think you misunderstood what I was saying. When I said I had inadvertently deleted "AutoCAD files" I meant drawings created with AutoCAD, not files which are part of the AutoCAD program. I have the AutoCAD cd and I could reinstall the program if I wanted to but that is not the problem.
Unfortunately, my C drive is almost full and I did not take into account that (if my understanding is correct) when we use the computer, even if we do not save new files, the computer is often overwriting blank space (i.e., where my deleted files are) on the hard drive. I guess I should have stopped using the computer until I had recovered what files I could recover.
Recuva (a deleted file recovery program I mentioned earlier) does still see some of these files (it can see deleted files) but I have been reluctant to have that program recover them since in the previous instances when I did so the files were unreadable by AutoCAD even though the Recuva program said they were in excellent condition.
OP when you do a search of your PC, are you including hidden files and folders? As for the backup files I suggested, it would be highly unusualy for you to have absolutely none. Try going to Tools --> Options. That should bring up the Options DBox, and one of the tabs would be Files. Check to see where the file path for Automatic Saves is located (it is usually a Temp folder). Of course this assumes you have set up automatic saves...
Here is my very, very, very late reply to your comment which you left on Feb. 14, 2011. (I am wrapped up in a lawsuit and some very urgent matters came up and I just basically dropped everything - including my AutoCAD project - for some time to attend to that matter.)
I do have automatic saves setup (for every 15 minutes) but AutoCAD 14 does not have a "Tools --> Options" menu selection and I am not sure how to get to the Options Dialogue Box. However, I did go to Tools --> Preferences and a Preferences Dialogue Box opened. Under the Files tab there is a list of locations of various files but it does not seem to list where automatic saves places files. Anyway, I searched my whole hard drive without finding any .BAK or .SV$ files. (I had inadvertently deleted almost all my AutoCAD drawing files.)
I have used one data recovery software. May be you can download it and have a try. It can do format recovery, unformat and recover deleted files emptied from Recycle Bin. However, if you have overwritten you data, it may not help you.
Issues with data recovery occur when you write files onto the drive. You increase your chances of writing over the previous data in proportion to the amount of data you write and the size of the drive.
If you attempted the recovery on the original disk drive and the file recovery utility appears to not properly recover the file, you will not be able to mount the file container nor attempt using a different recovery software to attempt to restore the file container properly.
Do you previously make an external header key backup (Volume Tools > Backup Header Volume)? If yes, you can attempt to restore the header key using the external backup header key file then attempt to mount the volume.
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