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Windows 7: Partition USB Pen Drive

29 Jul 2014   #21
Slartybart

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
 
 

I played around a bit with a PNY 8 GB thumb drive.

No matter what I changed in PW, the extra partition is not usable in Windows.
Changed the following
partition typeID from FAT32 to FAT32 LBA
extended to primary
deleted / recreated partition (PW tells you here - Windows won't see the part!)

on one of the operations PW mounted the partition (sorry I didn't keep good notes on that)

Windows is just stubborn in this regard. There is no reason that a thumb drive cannot be partitioned and used in Windows given the devices have grown in capacity.

I compared my ext Seagate spinner HDD properties to the PNY thumb drive properties and did not see where Windows makes the distinction. I didn't look that close though. Windows might read the device firmware - I'm not sure on that.

Kudos to whs for posting the information he has.

Golden, do you have a method that makes the new partition on the thumb drive visible/useable in Windows. This limitation has always bugged me.

Thanks,

Bill
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My System SpecsSystem Spec
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29 Jul 2014   #22
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

I made another couple of experiments:

1. I had a 64GB stick with a single primary partition. But that stick was never used for anything. I tried to shrink the partition but Disk management did not let me - the option was greyed out.

2. I deleted that single partition to get unallocated space. There I first defined a 20GB partition and then I defined a second partition in the rest of the unallocated space. That was possible (all with Disk Management).




Attached Thumbnails
Partition USB Pen Drive-2014-07-29_1646.png  
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29 Jul 2014   #23
jumanji

Windows 7 Home Premium 32 bit
 
 

Please unplug the pen drive , replug it and check whether you are able to access the second partition.

( I posted saying that Windows will never ever see a second partition but deleted it after seeing your post.. It is kept in reserve now. )
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29 Jul 2014   #24
jumanji

Windows 7 Home Premium 32 bit
 
 

I have to add that SanDisk pen drives manufactured between June 2012 and Dec 2013 or about were configured as Fixed Disks. Is yours a SanDisk?
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29 Jul 2014   #25
JDobbsy1987

Windows 8.1 Pro x64
 
 

Thanks for the guide Wolfgang, i will take a look through that soon.

I tried doing what you mentioned about in post #22 but i don't get the delete option?
Please note, I'm at home using a different pen drive for this test.

Delete Volume is greyed out... do i need to do something prior to this?

Partition USB Pen Drive-2014-07-29-19_03_28-untitled-paint.png

Cheers,
Jamie


My System SpecsSystem Spec
29 Jul 2014   #26
JDobbsy1987

Windows 8.1 Pro x64
 
 

Quote   Quote: Originally Posted by jumanji View Post
I have to add that SanDisk pen drives manufactured between June 2012 and Dec 2013 or about were configured as Fixed Disks. Is yours a SanDisk?
The one i have been using is Kingston Data Traveller G4, my last post was with a 64gb SSK

Regards,
Jamie
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29 Jul 2014   #27
jumanji

Windows 7 Home Premium 32 bit
 
 

No, that question was addressed to whs on which brand pen drive he tried on.

Anyway, since you are here, if you can manage to get a Sandisk pen drive manufactured between June 2012 and Nov/De 2013, you may be able to partition those and access all the partitions since those were configured as Fixed disks. Removable Flash Drive Recognized as a Local Disk and not a Flash Drive So my question to whs whether what he used is a Sandisk pen drive.

As far as I know, it is not possible for Windows to see anything but the first partition on a pen drive. One has to flip the removable bit on the pen drive whereupon it will show as a HDD or Local Disk.
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29 Jul 2014   #28
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

It is a Sandisk but I have no idea when it was produced and the details in the device properties do not tell me. I bought it in April this year. Maybe I can find another empty stick in my big box and see what that yields.

Update: I found an older Kingston stick and allocated 1 partition leaving some unallocated space. When I wanted to create the second partition (with Partition Wizard because nothing worked in Disk Management), I got the message below. And when I proceeded anyhow, PW got stuck at 84%.


Attached Images
Partition USB Pen Drive-2014-07-30_0006.png 
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29 Jul 2014   #29
JDobbsy1987

Windows 8.1 Pro x64
 
 

This task seems to be one of those easy in theory but harder in practice, i hope we can get to the bottom of it as this isn't my first attempt to do this

i have been looking round the web and seen a few things that mention this and the solution seems very complicated... Flipping the removable bit of your pen drive but can't see anything clear cut about this.

Linux doesn't seem to have this issue
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29 Jul 2014   #30
Slartybart

x64 (6.3.9600) Win8.1 Pro & soon dual boot x64 (6.1.7601) Win7_SP1 HomePrem
 
 

jumanji posted the answer, but there is a caution in trying to flip the bit on a pen drive - you can 'brick' it if something goes awry. I did some research and found that it's not worth the effort given that Microsoft allows Win8-to-Go.

For a list of certified flash drives for Win8-to-go, see:
Windows To Go

Scroll down to the Windows to go certified drives.

What does this have to do with the issue? These pen drives can be partitioned!

So.... I'll be getting a few new pen drives when they're on sale (back-to-school is coming soon!)
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 Partition USB Pen Drive




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