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Newbie
Posts: 9
Registered: ‎01-15-2013

Sandisk Extreme 64GB - Slower write speeds after system format

I have problem with Sandisk Extreme 64GB USB 3.0 Pendrive, I formated it in Windows 7 to exFAT (full format) and now write speeds are slower than before.

 

How can I reformat it exaclty same like it was by Sandisk ?

 

 

Newbie
Posts: 9
Registered: ‎01-15-2013

Re: Sandisk Extreme 64GB - Slower write speeds after system format

I find that information

 

drive you lose the custom logical block offset which was put in to provide (sometimes radically) improved transfer speeds.

 

So I need to restore the original file system scheme. Help Sandisk please.

SanDisk Guru
Posts: 2,608
Registered: ‎07-23-2010

Re: Sandisk Extreme 64GB - Slower write speeds after system format

"I formated it in Windows 7 to exFAT (full format)"

 

Why did you format it?  Why not leave it the way it was?

Ed
Important files = Backed up files
Newbie
Posts: 9
Registered: ‎01-15-2013

Re: Sandisk Extreme 64GB - Slower write speeds after system format

Because by default was FAT32, and I need exFAT for larger one file size over 4GB.

Newbie
Posts: 9
Registered: ‎01-15-2013

Re: Sandisk Extreme 64GB - Slower write speeds after system format

From CrystalDiskMark Sequential speedsOut of box

Read: 203MB/s

Write: 181MB/s

 

After format in system Smiley Sad

Read: 201MB/s

Write: 159MB/s 

 

I want to get back to previous speeds PLEASE, even with FAT32 file system, I know it's not very big difference now but it's slower and I feel that.

SanDisk Guru
Posts: 2,608
Registered: ‎07-23-2010

Re: Sandisk Extreme 64GB - Slower write speeds after system format

Try NTFS.  it doesn't have the 4GB file limit either.

Ed
Important files = Backed up files
Newbie
Posts: 9
Registered: ‎01-15-2013

Re: Sandisk Extreme 64GB - Slower write speeds after system format

Nothing help, still slower in write!

 

BEFORE any format out of box

 

AFTER format

SanDisk Guru
Posts: 2,608
Registered: ‎07-23-2010

Re: Sandisk Extreme 64GB - Slower write speeds after system format

Thank you for confirming what I have always said.  Don't reformat a new drive unless you absolutely positively have to, large file sizes being the only example IMO.  I think you've gone as far as you can at this point.  If you need 4GB files to fit you have exFAT and NTFS as your options but there is a down side.

 

You could try enabling the drive caching capability but you have to be very very certain you always Safely Remove any flash drive you use in the machine.

Ed
Important files = Backed up files
Newbie
Posts: 9
Registered: ‎01-15-2013

Re: Sandisk Extreme 64GB - Slower write speeds after system format

Could You tell me how to get back to previous speeds ?

SanDisk Guru
Posts: 2,608
Registered: ‎07-23-2010

Re: Sandisk Extreme 64GB - Slower write speeds after system format

See if SanDisk will replace the drive.  But you will be back at FAT32 and limited to files 4GB or less.

Ed
Important files = Backed up files