In the end is important to point if you’re really so concerned, be smart, buy an HD. And this is my first point, make what the page did not did, point that it may bee very hazardous to hardware, probably very unnecessary, you may have a hardware that TRIM behavior as intended in plenty 2015, and that isn’t sure that you will obtain the same safety as an HD as SSD have controllers doing a massive abstraction of real data management. I understand too, that its of a really bad intention, pointing hazardous procedures without informing of possible damage, independent of intention… And worst if it cant be sure of its own results, as I pointed, manufacturers can directly access NANDs and obtain data that controller itself hide. What points to more possibilities, like any of the procedures here being trustful, as a lot of tests shows it all depends on what truly controller. They point that maybe only manufactures would be able to restore anything in those cases, a clear *maybe*. Speed gains confirm TRIM effectiveness too as for long sustained good performance, attempting to write on deleted space, this one need to have its blocks reset. In light of other good and trusted sources of test, a lot of the paper claims are now a day, history, since practically all manufacturers use TRIM and that showed very clear behaviors in laboratory test (in practical terms the same kind of rescue tests made in the paper), concerning today’s technology.Ī good number of SSDs nowadays gives or zeros or random values to the same block trimmed, in any access. Yes, I understood the paper, but as I said, this paper is at best *very old* and not much relevant nowadays. SDelete is outdated, is from 2013, so probably it ignore SSDs peculiarities… Moderns SSD don’t need much more then some settings to avoid aggressive write/caching on them, in rest they are completely managed by controller. Different from FS block size what can make SDelete more aging… For example samsung EVO has an unusual 1536kb EBS(erase) and 8KB page size(write). There exist much more wrong information on the post… eraser block size is different from SSD to SSD. You may be aging your SSD doing “overtriming” or even worse, depending on SDelete way of operating… So performance will be uniformly high whenever times you write/delete. This is a important function on SSD nowadays because block erasing is a expensive operation, so its better to do it before any write is requested, so write operations can be done directly without wiping blocks. Modern SSDs use TRIM to be informed of which blocks of data are no longer considered in use, so they can be wiped. Known flaw of SDelete – misses file names located in free space – Sdelete is not perfect, but it is pretty good. So it writes in 4KB pages… but has to delete in 512 KB Blocks… and it avoids deletion due to wear leveling technology. ![]() Hiccup 3 – Writes in 4 KB pages but deletes in 512 KB Blocks. Your OS will assume it has 29.8 GB, whereas we have a lurking 2.2 GB excess in which files could be found. Hiccup 2 – SSD have 2.2 GB more than a HDD (29.8 GB) Not so keen on SSD technology now are we! Yep, your data is kept forever… if the SSD has it’s way. Wear Leveling avoids data deletion at all costs… do you realise what this means for privacy? Because of the mean time between failure, it ensures data is evenly saved across the drive – to reduce the failure rates, but in doing so avoids overwrites or deletions. So what’s going on with SSD drives… why is so much data being found on them? Hiccup 1 **** Hiccups when cleaning SSD Drives – why are they a privacy concern? EFF recommends Eraser – don’t use thisīoth Eraser and Wipe proved the least efficient drive wiping software on SSD drives – leaving thousands of files on the drive when tested (3,866 files on test one, totaling 13925 MB). DD is better than other tested drive wiping software.Īnd the results… were MEGA – DD had zero files found and zero loadable files. Sdelete can run multiple passes and delete a specific directory sdelete -p2 -s c:\Users\smile\Downloads -p 2 = run 2 passes -s = delete this directory and its subdirectories for c:\Users\smile\DownloadsĭD is the most effective SSD drive wiping technology. ![]() Run a Command prompt and change directories to cd c:\sdelete sdelete -c They are a privacy violation waiting to happen. SSD drives actively avoid overwriting data due to wear-levelling and device under provisioning, which provide maximum functionality and speed.
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