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1330 posts

Uber Geek
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# 251664 5-Jul-2019 15:35
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I have a USB thumb drive that appears in Windows as a CD. The files are accessible but I cannot format the drive to return it to a USB device. The format option in DIsk Management is grayed out.

 

I think this has been done deliberately to stop accidental erasure .

 

Any suggestions on how to revert it to a USB?

 

Thanks.

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1787 posts

Uber Geek
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  # 2270607 5-Jul-2019 16:38
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In disk management

 

try giving that USB a differenet drive letter . Although that wont help if the USB stick was somehow made to be read only

 

 


534 posts

Ultimate Geek
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  # 2270612 5-Jul-2019 16:58
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Remove the partition and re-create the partition from there, i have had a few USB "Promotional" in the past set up like you describe.





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  # 2270613 5-Jul-2019 17:02
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Thanks, I had tried that but no luck. I think it has been somehow made only readable. I just want to format it but I cant delete the files of it or format it.



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  # 2270617 5-Jul-2019 17:17
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I dont have the option to remove the partition in Drive Management, most options are grayed out.

 

 

I have...

 

 

Open

 

Explore

 

Change Drive Letter

 

Properties

 

 

and

 

 

Help.

 


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  # 2270619 5-Jul-2019 17:24
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This is done by different programming of the USB controller on the drive to make it specifically like this. Also optical will often autorun on computers where other media will not.

 

Find the USB device identifier and google around to find who makes it. They may have flashing tools on their site but TBH all I have found are all slow low capacity crap drives so not worth the effort.





Richard rich.ms

180 posts

Master Geek
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  # 2270630 5-Jul-2019 17:53
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peejayw: I dont have the option to remove the partition in Drive Management, most options are grayed out. I have... Open Explore Change Drive Letter Properties and Help.

 

Can you show us a photo, normally right click, delete volume. Otherwise get EASEUS program to fix it use the free tria.




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  # 2270649 5-Jul-2019 18:20
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Easus Partition Manager doesnt see the drive. Here is the screen from Disk Management

 

 

 

 

 

 

 

 

 


 
 
 
 


180 posts

Master Geek
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  # 2270670 5-Jul-2019 19:42
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Do you know if this USB use to work? Note some are made like this so that they can't be erased.


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Master Geek
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  # 2270671 5-Jul-2019 19:52
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Try low level....Press "Start" + R.
Type "cmd.exe", hit enter
"diskpart", hit enter

 

type "list disk", find your flash drive in the list.
Type, "select disk x" (replace x with your flash drive's disk number)

 

Type "clean all",
Remove the flash drive, then reinsert

 

Repeat steps list disk sel disk then.
Type "create partition primary", this is immediate.
At this point, you need to format the drive, "format fs=ntfs quick"


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  # 2270672 5-Jul-2019 20:07
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Try This:

 

 

Open cmd.exe as administrator. Then run the following commands:

 

     

  1. Type in diskpart.exe and press enter. This will open command line based disk management utility, indicator will change to DISKPART>
  2. Within diskpart, type list disk and press enter. This will show all connected disks. Notice the "Size" column and make a note of the disk # you are concerned with.
  3. Now type select disk X where X is the numerical digit from step 2.
  4. To see its attributes, type attributes disk and press enter.
  5. Now that we've ensured it is indeed a read-only disk, we will need to clear the flag. Simply type attributes disk clear readonly and press enter. This should clear the read-only flag.

 

Now you can format using diskpart or use Windows explorer to manage it.

 

 

Source




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  # 2270689 5-Jul-2019 20:44
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Tried that, "List Disk" does not show the USB drive, I guess because it shows as a CD not a HD?

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Ultimate Geek
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  # 2270742 5-Jul-2019 21:20
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Try https://gparted.org/ set it up to a USB and boot off that then delete the CDROM off the other usb, then recreate it.?

 

 





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  # 2270821 5-Jul-2019 22:49
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You won't be able to format that, it's made to be read only.


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  # 2271670 8-Jul-2019 10:12
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What's your time worth? A new 8GB flash drive is $6, 16GB $7 at PB. I'd replace rather than re-purpose.





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  # 2271672 8-Jul-2019 10:21
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I was trying to do this for someone else who has a drawer-full of them. Not about the money, just trying to avoid unnecessary consumerism and waste.

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