I believe the 5th one is on by default.ĬCleaner wipe did a format at the end of running and I think that put the 24 files out there that are ignored. I certainly don't understand Recuva, just tried those actions, they are not the default. Multiple passes should not be required and on NAND flash are positively horrendous. The second run seems to have done the trick. Drive Wiper in Tools does allow a complete disk and data erase, which is what appears to have happened in the second run. Wipe Free Space in Options/Settings does not allow you to erase any live user data, and this is perhaps what you were using on the first run. They are two different independent processes. Furthermore the WFS settings in Options/Settings are ignored by Drive Wiper. Alternate data streams and cluster tips belong to Secure File Deletion, a separate process entirely that doesn't affect Wipe Free Space. Drive Wiper doen not, as far as I know, have an option to wipe the MFT, you get it whether you want it or not. I don't know if you were initially using Drive Wiper from Tools or Wipe Free Space from Options/Settings. There's quite a lot of confusion in this thread. They are ignored as Recuva ignores live files - unless you specifically ask otherwise. The 24 files ignored are most likely the system files that are reinstated after the device has been erased (by Drive Wiper) and then formatted as NTFS. It's is so strong it dangerous, you would not want your hand within a foot of magnet and a piece of metal. Just for fun I might try that big magnet. Think you are right only way to be sure data not there, especially for an OCD person like me, is a hammer. Then it's not like I sit there and watch it run. Takes 10 hours with 1 overwrite and I actually ran that twice so it gotten 2 overwrites. Running CCleaner with option 3 or 7 check might run a week. However, many say that doesn't work on this type of drive. I got some really strong magnets that constructions sites use to pick up nails etc, thought about that. I may just keep it as it was only $19.00. Recuva came up with that 3,009 within seconds makes me think CCleaner didn't really wipe out the MFT, but that makes sense as the options says wipe MFT free space. File names it displayed are familiar, path is weird all f:\?\ Had files names displayed and a summary of 2,476 files found and 534 ignored, that adds up to the 3,009 it discovered in the first minute. I just let it run and about 8 hours later found it was finished. Also, displayed that it would run for 2 hours or more. If I am correct, then my concerns would apply to Compact Flash cards, thumb drives, and so forth as well as SSDs.About 1 minute into the Recuva deep scan it displayed that it found the 3,009 files, but didn't list anything. I'm no expert in these matters, and I could certainly be wrong. Since most SSDs maintain some "spare" sectors, there may need to be some additional thinking put into this. It would seem a better way to perform wipe on SSDs would be to grab up all the free space so there is no "free list" of unused sectors then perform the wipe of free space and the MFT. If this is true, then the actual sectors written would be unique to any individual SSD and very hard to predict. Unfortunately, I believe most Flash Controllers use a more sophisticated allocation scheme involving least-written determination. If it always allocated from the head of the list, then the current wipe process would eventually get them all. If I am correct, the actual sectors wiped would vary depending on how the SSD Flash Controller allocates sectors. Thus, the old sector would remain in the "free list" of sectors in the SSD Flash Controller. This because a write to a new sector may, in fact, cause the Flash Controller in the SSD to simply remap a fresh sector to the new write request. I'm concerned that the current wipe approach may not be effective using Solid-State-Drives (SSDs) such as I use in my computer. Based on the comparatively slow rate at which free space is consumed, it appears to me that CCleaner is grabbing bits of disk space then wiping it and moving on to the next until all free space is "owned." The space is then released and MFT wipe started. I was recently watching my computer stats as CCleaner went through it's "wipe free space" and "wipe MFT" process. Go have a pint or two on me then get back to work on your excellent products! I'm a long time user and sheepishly admit to only now having finally gotten around to "contributing" via PayPal.
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