Posted: 06 Feb 2015 20:13
Is there one? I've just started using HxD, but all I can find to tell me what to do is a one-page FAQ.
There seem to be quite some programs that can undelete files and that are free. TestDisk is an opensource one. I bet there are others you can find. I would suggest however to not install anything on the disk which holds the data you want to recover. Writing data to this disk (or installing programs on it) may finally delete the file you want to recover. A good option is a recovery disk or live CD (I think TestDisk has this too, check out their website).Terpsichore wrote:I'm looking for a text file that I believe to be on one of four HDs that I own, but which got accidentally deleted. I can't remember which disk it was. I tried out different trial versions of apps that claim to be able to recover lost data, but I'm reluctant to buy something unless I'm sure it will work. HxD is my last resort.
You have to run HxD as administrator to see all drives/disks. Note however that HxD is not really suited for recovering data, it would require a lot of manual work and knowledge.All HxD offered me was Optical Drive 1, which is the currently active one.
Yes, the optical drive is not the disk you want. Be aware though that text files may not be contiguous on the drive (file systems can split files in several blocks and spread them all around the disk), or they may be compressed or use a special encoding (such at UTF-8). It may be that you wont find the string even if it exists.But I tried it out anyway. I tried searching for a string that I knew was in a text file in My Documents. After 1 1/2 hours, it popped up a message saying "not found". Obviously I'm doing something wrong.
http://en.wikipedia.org/wiki/Hex_editor gives an introduction, but the German one explains the layout of hex editors better.I'd like something that at least tells me what I'm looking at when I view the screen. There is a list of 9-digit addresses on the left.
If you go to the end of the document the Offset (=position) will be the file size. Optical disk is probably a DVD or Bluray drive, so it's not what you want.If my arithmetic is right, that adds up to 64Gb, not enough to span the range of a HD these days.
Those numbers are very simply byte addresses or offsets. That means positions starting from the start of the file or disk (depending what you opened, a file or a disk). So in case of a drive, if you go at the end of the drive, the offset in the statusbar (bottom left) will tell you the drive's size in bytes. No block or sectors involved. Sectors are separated by horizontal lines, but this is just shown for convenience, because it can be useful when editing file systems for example.So I guess 000000000 must mean an address within a block of some sort, and there must be many blocks (sorry, I know almost nothing about the structure of HDs). Can you at least tell me what those numbers represent?