tigerjack Posted July 4, 2016 Share Posted July 4, 2016 On my hard drive I had two partitions, one with Windows 7 and the other with Windows 10. But I did not like Windows 10 and I decided to have a single partition with Windows 7. When I cleaned and defragmented the system I noticed this file : C:\$Bitmap file size 3.49 MB Fragment 2 and even after multiple defragmentation it is always present. Someone argues that it is a "snapshot" of when there were two partitions and it is not erasable, others argue that it could occupy a position that could prevent me from creating a new partition of the maximum attainable size (because it occupies a specific cluster) and to get the previous situation I should reinstall windows 7. It's true? Any ideas or suggestions? thx Link to comment Share on other sites More sharing options...
Jordan Posted July 4, 2016 Share Posted July 4, 2016 Some readings here if not read yet http://www.pcguide.com/ref/hdd/file/ntfs/archFiles-c.html https://en.wikipedia.org/wiki/NTFS Read from "Internals"... Link to comment Share on other sites More sharing options...
Kalju Posted July 4, 2016 Share Posted July 4, 2016 This is NTFS systems info, there is stored information about free space usage. It is system file, normally it is hidden and also access is denied. Link to comment Share on other sites More sharing options...
tigerjack Posted July 4, 2016 Author Share Posted July 4, 2016 @Jordan4x I read the definitions, but when I had a single partition this file was not there after defragmentation !!! So I was wondering if anyone had ever seen this file. It sounds ridiculous but I always had zero fragments after the use of O&O Defrag and see that 2 bothers me. If it is not a problem and there is no way to make it disappear I'll have to adapt. @Kalju It is system file, normally it is hidden......in my case it is not present although I show hidden system files thx Link to comment Share on other sites More sharing options...
Jordan Posted July 4, 2016 Share Posted July 4, 2016 Just now, tigerjack said: @Jordan4x I read the definitions, but when I had a single partition this file was not there after defragmentation !!! So I was wondering if anyone had ever seen this file. It sounds ridiculous but I always had zero fragments after the use of O&O Defrag and see that 2 bothers me. If it is not a problem and there is no way to make it disappear I'll have to adapt. There is no zero fragmentation. this is only an estimation Some files are constantly read and rewrited Also, some few files fragmented don't have significant impact on the general performances i had once came acrross a similar problem i don't remember what was the "C:\$..." folder or file it was but i simply deleted it! Link to comment Share on other sites More sharing options...
Kalju Posted July 4, 2016 Share Posted July 4, 2016 It is true that all of the systems do not use this folder. And most of the newer computers do not use it. There isn't such a folder. Older systems typically use and there it exist. So it is possible, that you have a computer, where it has never even been. Link to comment Share on other sites More sharing options...
C.G.B. Spender Posted July 4, 2016 Share Posted July 4, 2016 $bitmap is special ntfs file and afaik is present on every volume formatted as NTFS, however it is and should be only visible and accessible to the SYSTEM, never to the user. There is always one $bitmap per ntfs volume not per drive. There is no chance of you having a ntfs formatted partition and not having $bitmap, it's just you're never supposed to see it. The fact you're seeing it indicates you're either doing something with the drive that you shouldn't in normal circumstances (such as low level data accessing/formatting or tampering with the hidden data streams) or that the drive is misformatted / dying. More on the $bitmap @ https://whereismydata.wordpress.com/2009/06/01/forensics-what-is-the-bitmap/ Link to comment Share on other sites More sharing options...
tigerjack Posted July 5, 2016 Author Share Posted July 5, 2016 My steps 1- with win 7 I create new partition and install win 10 in order to I find two partitions and two operating systems and I can choose which one to use 2- I do not like win 10 so I format the partition that contains it 3- I extend the original partition of win 7 for business as usual 4- everything works fine but turns up the damn c:\ $ Bitmap never seen before @C.G.B. Spender ......The fact you're seeing it indicates you're either doing something with the drive that you shouldn't in normal circumstances (such as low level data accessing/formatting or tampering with the hidden data streams) or that the drive is misformatted / dying. much bad news thx everyone Link to comment Share on other sites More sharing options...
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