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crazy squirrel

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  1. SSD's need to be '1' filled, four times too, not zero filled. Default state for the chips is 1, and 4 levels deep. Be aware that due to built in wear leveling, SSD's cannot be fully 'zeroed' so to speak. A portion of capacity is reserved by the manufacturer for wear leveling (promotes longer life) that the user cannot see or access. Got something so sensitive you want NO evidence left then use a live version of Linux. Knoppix used to scramble/clear all ram on shutdown. Dunno if they still do or not. Be aware that newer computers using DDR4 memory can keep data stored in their chips for a LONG time. "Zero filling is a method of formatting a hard disk whereby the formatter wipes the disk contents by overwriting them with zeros. Each bit present in the disk is replaced by a zero value, hence the name zero filling. Once the data are overwritten with zeros, the process cannot be undone from the hard drive." - Bing definition
  2. One way to obscure the files is to format a drive then heavily encrypt it. Some use Hillary's method to wipe a drive. Another method is evidence eliminator (traditional hard drives only). Even the FBI has trouble recovering much from that method. Even electron microscopes have loads of trouble. Now with SSD's. you need to write all ONES (not zeroes) to every part of a drive. Got that info from an SSD maker. And you have to do it a whopping FOUR TIMES too. If you have trouble securing sensitive info you want to delete, then encrypt the data first, THEN dispose of it.
  3. I have the same problem - deleted partition but the partition could be recovered. Recuva found the whole partition and I am slowly recovering my lost data. You would think that if Recuva could find the whole partition, it could write THAT information back into the hard drive. And thusly fully restore the drive. It is taking me days and days and will take WEEKS to recover the lost data from my 2TB external drive. I am afraid to re-partition the drive for fear of permanently losing everything (mostly baby pictures and such for 20 years ago that are irreplaceable). I do not suggest reinitializing any partition or MBR for a drive you want to save data from. Wait for the experts to tell you.
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