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New flashdrives


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6 replies to this topic

#1 durkinjt

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Posted 04 December 2016 - 10:39 AM

Just bought 2 flashdrives on the net 250G for $15USA & 60 G for $ 8, problem is when I format them to NFTS the are not recognized, when I format to Fat32 they are, which obviously I will never get the 250G & 60G. The old story you get what you paid for.



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#2 JohnC_21

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Posted 04 December 2016 - 10:48 AM

Extra high capacity drives for a cheap price usually indicates drives with firmware to show the drives having a larger capacity than what is actual. 

 

Have you tried formatting using a 3rd party partition manager like Partition Wizard?

 

You can test your USB flash drives using tools listed here.


Edited by hamluis, 04 December 2016 - 11:08 AM.


#3 Mishima

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Posted 04 December 2016 - 04:38 PM

Hello there,

 

In addition, it could be that the setting is not yet prepared for each device to be formatted to NTFS (because they need to be optimized for performance).

 

Press start, type device manager, select the result from the list. In the list, find the flashdrives (do this for each one), right click on it, and select Properties. On the Policies tab, choose (under write caching and safe removal) "Optimize for performance" or "Better Performance." Afterward, try to format the drive again for NTFS and tell me if it worked.



#4 durkinjt

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Posted 04 December 2016 - 08:34 PM

Thanks for the replies, unfortunately, did not work, says drive is not accessible after the NFTS format. Did the "Better performance" thing also Kakzu, good to know though, thanks again.



#5 RolandJS

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Posted 04 December 2016 - 08:46 PM

durkinjt -- what are the actual FAT-32 total byte-spaces for those flash drives?


Edited by RolandJS, 05 December 2016 - 04:48 AM.

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#6 Platypus

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Posted 04 December 2016 - 09:20 PM

The drives will be very much smaller true capacity, with firmware reporting a false capacity. This can initially work with FAT32, since the File Allocation Table is located at the beginning of a drive, and you'd be able to store something, until the drive fills up and writes either don't happen and the firmware lies about it, or the new data overwrites previous data.

 

NTFS places the Master File Table further into the drive (about 15% from the start). For example with the 250G drive the MFT would be supposed to start around the 37GB point. So if the drive is actually 16GB or even a 32GB inside, there is probably actually no MFT in existence, or it has wrapped around and overwritten the start of the drive, so there's no file structure to recognize. Either way cannot function.

 

The NTFS Optimization policy won't affect the ability to format, and as its placement under the Write caching and Safe removal category indicates, just determines whether Windows will use write caching for that drive, which demands safe removal procedure to avoid possible data loss. It's not recommended to set Optimize for Performance on removable drives like flash drives, as it makes it more likely they'll be corrupted by an accidental removal.


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#7 shadow_647

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Posted 08 December 2016 - 03:48 PM

By the way Linux can format fat32 up to 2TB if i remember right and win98me can do it up to 137gigs, more then that ya 256gigs for $20, scam.






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