You’ll now have to research and try to find tools that can ‘repair’ a corrupt wallet.dat. Undoubtedly some will be false positives but hopefully at least one contains your wallet.dat data. You’ll (hopefully) end up with some, but not too many.
When scan is finished pick RAW results, possible wallets are sorted under other > bitcoin wallets. Click ‘Known file types’ and make sure that under ‘Other’ > ‘bitcoin wallets’ is checked. Make sure ‘Extra search for known file types’ is ticked. In R-Studio, select the volume > Right Click > Scan. Click ‘Yes’ if R-Studio asks if it should load the file immediately. In Main TAB, under ‘User file types’ click … and select the wallet.xml file. We first need to import the file into R-Studio Importing a custom wallet.dat signature file into R-Studioĭownload the custom signatures here. It contains 12 signatures that I found that can be used to identify a possible wallet.dat. I have a custom signature file for R-Studio. We can also not determine the file size or find different fragments in case the file was not contiguous (unfragmented). What we can not do is find the file name or the folder it was in. If we know the exact offset of the bytes within the file, we can reliably determine the start position of the file. If we now search the hard drive for this sequence it gives us a chance of finding the file. Say we examine 3 intact files and in all 3 we find a sequence of bytes: 62 31 05 00. The trick is to find some identifying byte patterns within the actual file data, often called magic bytes or a signature. If option 1 is not available to us, we can fall back to a method called raw recovery (or sometimes carving or signature based recovery). If option 1 we can not use method 1 as described above. If option 2 then that’s the end of the adventure, however we will never know until we try finding the file. At some point file system meta data is overwritten. There are two problems with lost or deleted files: Often attempts to recover the file have already been made using various file recovery tools, but without success. I see an influx in people wanting to examine old hard drives for Bitcoin wallets, and often at some point the wallet was lost or deleted while the drive stayed in use to some degree after this. Method 2: RAW recovery of the wallet.dat using R-Studio custom signatures In R-Studio, select the volume > Right Click > Scan. If the file system is slightly more damaged, for example in case of a RAW file system you may have to scan the drive. You’ll be presented with an Explorer like view in which you can simply browse to the original location of the lost or delete file, and select and recover it. If the file system is reasonably intact all you need to do in R-Studio is select the volume > Right Click > Show Files. But don’t assume if Recuva can not find the file, that it is not there! This short video demonstrates recovery of deleted files using Recuva vs. You may be tempted to use a free tool like Recuva, and by all means, try. 
Also RAW file systems are often reasonably intact.
Or after you deleted a partition by accident.Situations in which you can expect this to be the case is when: This is the easiest method and is useful if the file system is relatively intact. Method 1: File system based recovery of a wallet.dat file Note that R-Studio is a commercial tool, to actually save files you need to purchase a license. There are two recovery methods available to us, which I will explain. Note that if you delete files or lose files due to formatting on a SSD, they are beyond DIY Recovery!! In that case you increase chances of file recovery by a lab by immediately disconnecting the SSD from power!!įirst of all you’ll need R-Studio for this, which you can download at this website. While this blog post covers my initial ‘research’, intention of this blog is to give an easier to digest guide into recovering or undeleting a Bitcoin wallet.dat file.
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