Sandisk Extreme 64GB - Slower write speeds after system format

The expression relates to being able to go back once you have crossed over a wooden bridge.  If you burn the bridge after you cross it you can’t go back.  Commonly used when a person leaves a job to go to another one.  If he insults his old boss and company when leaving chances are he will never be able to go back to it.  If he leaves on good terms the possibility of being rehired is open.

hth

What you talking about:dizzy_face: ? what this have to my problem, I’m looking for real solution advice here to restore factory write speeds!

What factory is set default allocation size for this drive ? Of course I tried with “Restore device defaults” in format nothing help, and I think windows not recognize it correctly.

sandisk does not have a formatting tool for USB drives so I am not sure you are going to be able to get back the exact same offset. My 64GB USB 3 drive is FAT32 128kilobyte allocation size. 

Windows will not do FAT32 in partition larger than 32GB so you would need a third party formatting tool. No guarantee it will work but you can give it a shot. 

What you talking about ? what this have to my problem,”

You asked:

Sorry I don’t understand what you wrote too much with that bridge sentence

I tried to explain.

Ed_P - ok no problem :wink: thanks for explain.

I contacted with Sandisk support, told them everything, and they said there is no possible to delete default partition offset, with any format, and I don’t belive in that because I see how write this pendrive now, and how was before format.

Finally they don’t help me :frowning:

Please help me! I bought one of this and formated because had a virus, then I did a test with cristaldiskmark:
Read Speed: 34.24
Write Speed: 29.11

I tried to format it with fat32 with third party applications, and the speed remains the same, how do restore to factory settings? or what can i do?

If you bought it new, new as in from a major retailer vs eBay, then it did not have a virus.  Your AV was giving you a false positive, something Norton does frequently.

There is no way for reformat it back to factory specs.  Any type of formating you do will realign the clusters, create a MBR and create a partition table.  Sorry.

"what can i do?"

You can learn that formating isn’t a cure for everything. :wink:

well i’ve learned that “formating isn’t a cure for everything” but im looking for a solution to my problem,  i just want my USB get closer to the real speeds, after all you’re the expert here, right?

"you’re the expert here, right?"

:smileyvery-happy: Hardly, but thanks for thinking so.  :smiley:

The initial format is a super floppy format; no MBR, no partition table, is FAT32 and a cluster size that I don’t know.  It probably varies depending on the size of the flash drive.  I know of no app/utility that will recreate that format.  That doesn’t mean one doesn’t exist, just that I don’t know of one.

If you have an app/utility/way to format the drive with different cluster sizes try formating it with different sizes and see if ones are better than others for you.

This will definetely help!

https://docs.google.com/document/d/1FBHLnaJJ1Ev5b90lrNpJ6BUaQFvAFrrUFYErlhtIuLM/edit

Thanks panas.  An interesting read.

i just bought one usb3 sandisk extreme 64GB, at first the read & write speed were like 30 ~ 40 MB/s almost the same on both usb2 and usb3 ports, i thought it was strange i formatted the disk to NTFS quick format, but the speed didnt change,

i solved this problem by updating my motherboard drivers like intel chepset, intel rapid storage, bios others ,

after installing the drivers i restarted my pc, then the speed jumped to read speed around 150 ~ 250 MB/s

write speeds around  ~ 150 MB/s 

i was like whaaaat speed.

i think the problem most of the owners of this sandisk extreme usb3.0 is with drivers, formatting does virtually nothing.

i hope this helps.

What you need to do before you ever format a usb drive is copy down its current structure and information about alignment and such. Then duplicate the structure and alignment using a formatting tool. If you don’t know how to do that, you shouldn’t be reformatting it. 

Regardless, here’s a snapshot of of what the original factory default structure is like of a sandisk extreme usb 3.0 64GB drive

Use something like gparted (http://gparted.org/)) and make 32K block size, align to 32K, start of the partition should be at 32K as well.

If the drive is still slow try doing a full format, not a quick format.

What I’m surprised about is why doesn’t SanDisk just provide a tool that formats your drive to factory condition?

Because there is so little need to format the drives. 

Because there’s no need for people to hold files larger than 4GB on a 64GB drive.  You MUST be daft.

Formatting for files larger than 4GB is the only reason to format the drive.  But NTFS has overhead, namely journelling, and that slows things down.  If small cluster sizes are choosen that doesn’t help either.  And if the Windows system config for USB drives is set to Safety rather than Performance that also doesn’t help.

So you formatted your flash drive to NTFS and now you want to format it back to FAT32?

I had horrible horrible writing speeds close to stalling after a very very nice thrust up until the 1gb mark. And yes my usb3 works fine on my other usb3 devices. I then tried enabling caching, and i WAS sure to remove it correctly. Only trouble was windows froze the device at one point. Could not release it, nor shutdown windows. I even waited 10-15 min to be sure. Now the drive is “broken” ie i NEEDED to reformat it. Hasnt been the same since. anyway kinda seperate problem i guess.

My reason being here is you Ed_P. Although polite you are still being kinda ■■■■■■■■■. I’ve NEVER heard that you are not supposed to format drives of any kind. We have been using it as a basic feature in dos/windows since the floppy drives, wth are you talking about when you say you are not supposed to reformat from stock. Frankly i feel cheated there wasnt a big red sticker on the box of the product warning you of this. I can’t remember if this even came with a manual, but if it did, I read it. I always do, and I certainly don’t remember this written anywhere.

You are blaming PeterMac and Yanos43, basicly saying they did this to themselves.

Are you employed by sandisk or what? or selfproclaimed sandisk guru? I sure hope its the last, because you are bad advertisement sorry

EDIT: and I could not believe this drive got shipped with fat32. It’s 2014 why this **bleep** still exist. Imo reformating to a filesystem that supports 4gb+ files is an absolute must. For me drive is unusable without.

thanks to the last posts by people who came up with constructive replies

:smileyvery-happy:

 

We have been using it as a basic feature in dos/windows since the floppy drives,

 

but then you say

 

It’s 2014

 

Yup, it is 2014, and you can’t buy DOS floppies anymore and your machine is running Windows not DOS but you’re still doing things like it was 1974.  Why should SanDisk change when you haven’t?

 

FAT32 is a format that is compatible across multiple OSs, and multiple devices. People use removable devices in more than their 386 machines now days. Desktop machines, notebooks, ipads, tv, printers, etc.  Thus the use of the FAT32 format today.

 

But the FAT32 format is indeed an old format and people are creating files larger than 740 KB floppies.  So newer, larger drives have an exFAT format but they don’t work in all devices, most TVs for example. 

 

And yes, sometimes one has to reformat a device/drive to resolve a problem.  File size limitation, device corruption, etc.  But doing it for a reason is not the same as doing it because that’s what you have always done with floppies.

 

Whats the trouble, i say SINCE floppy drives. That includes up until 2014 and not just floppies. And with dos/windows i tried to illustrate the long period we have all been doing this. English is not my primary language, but im pretty sure this should be clear enough.

There is no need to degrade me like im a retard running a 386 with dos. In fact my first pc was a 286 with a EGA monitor D:

This is indeed news to me, but i don’t beleive im the only one formating with no hesitation whatsoever.

I guess i did not get the memo about when it became hurtfull to format your drives. Whatever technology they might be built on. Quite the opposite in fact, quite a basic feature in windows too…

Again a warning would have been nice.

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