A common misconception is that a damaged printed circuit board (PCB) may be simply replaced during recovery procedures by an identical PCB from a healthy drive. While this may work in rare circumstances on hard disk drives manufactured before 2003, it will not work on newer drives. Electronics boards of modern drives usually contain drive-specific adaptation data (generally a map of bad sectors and tuning parameters) and other information required to properly access data on the drive. Replacement boards often need this information to effectively recover all of the data. The replacement board may need to be reprogrammed. Some manufacturers (Seagate, for example) store this information on a serial EEPROM chip, which can be removed and transferred to the replacement board.[8][9]
Volume Serial Number Date/Time Page 1 of 1 [ 5 posts ] Previous topic Next topic AuthorMessagejdude45 Post subject: Volume Serial Number Date/TimePosted: January 19th, 2016, 9:57 Joined: July 19th, 2015, 10:05Posts: 24Location: ForidaI read that the volume serial number is a combination of the date and time that the volume was formatted. I have tried a number of sources to find out how to convert the VSN into the date and time, but I have not been able to find any information. The only tool that I can find is one which allows you to change the volume serial number. I tried a tool called "DCODE" but it doesn't work. Here is my volume serial number:E210BAB019BAB004Is there a way to convert this to date and time?I know that when I used the "volume" command at the DOS prompt, it gave me a 32-bit number as the serial number. I used Active@DiskEditor and it gave me this larger number as the volume serial number.Top jermy Post subject: Re: Volume Serial Number Date/TimePosted: January 19th, 2016, 10:33 Joined: March 19th, 2015, 15:01Posts: 1413Location: isrealforget about 64 bit, the volume serial no. is designed in the 1950sread chapter 28 herenote: if the date and time on the local computer was incorrect you will not able to get it right, i.e. you'll get the local date and time it was on the computer at the time of formating the driveTop jdude45 Post subject: Re: Volume Serial Number Date/TimePosted: January 19th, 2016, 11:57 Joined: July 19th, 2015, 10:05Posts: 24Location: ForidaThank you for the reply. Here is what it said concerning the volume serial number:To read the Volume Serial Number, use the IOCTL call, Int 21h function440dh Minor Code 66h, Get Media ID. To write the Volume Serial Number,use the IOCTL call, Int 21h function 440dh Minor Code 46h, Set Media ID.I do not understand what this means. Could you explain what the author is saying here as far as reading the serial number? Thanks.Top einstein9 Post subject: Re: Volume Serial Number Date/TimePosted: January 19th, 2016, 12:21 Joined: May 13th, 2010, 11:17Posts: 2767Location: Kuwaitjdude45 wrote:Thank you for the reply. Here is what it said concerning the volume serial number:To read the Volume Serial Number, use the IOCTL call, Int 21h function440dh Minor Code 66h, Get Media ID. To write the Volume Serial Number,use the IOCTL call, Int 21h function 440dh Minor Code 46h, Set Media ID.I do not understand what this means. Could you explain what the author is saying here as far as reading the serial number? Thanks.Assembly Lang._________________Kuwait Data Recovery - UNIX GTCThe only reason for time is so that everything doesn't happen at once. By: Albert EinsteinTop fzabkar Post subject: Re: Volume Serial Number Date/TimePosted: January 19th, 2016, 13:08 Joined: September 8th, 2009, 18:21Posts: 14566Location: AustraliaThe original DOS/Win9x boot record (FAT16/FAT32) had a 32-bit Volume Serial Number at offset 0x43.An Examination of the MSWIN4.1 OS Boot Record: The NTFS boot record has a 32-bit Volume Serial Number at offset 0x48.An Examination of the NTFS Volume Boot Record Of Microsoft Win 2000 and Win XP: Quote:NOTE: When you use the DIR command and others inside of a CMD/DOS-box under Windows 2000/XP, it will show a Volume Serial Number composed of only the last four bytes of this Long Long Word [B4A4E199A4E15DFC]! Example: C:\>dir Volume in drive C is Win2000 Volume Serial Number is A4E1-5DFCObviously, we must look into this further to find out how all these bytes are being used by the Operating System! It is interesting to note how the (3rd and 4th) and (6th and 7th) bytes repeat here! Do you have a Serial Number where these two sets of bytes are not the same?You can use a disc editor such as DMDE (freeware) to view and edit the boot sector. _________________A backup a day keeps DR away.Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Page 1 of 1 [ 5 posts ] Main Forums home Forensics
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