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Partition USB Drive with 1 Partition Locked

partition lock usb drive

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#1 Chaudhry

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Posted 10 March 2014 - 07:31 AM

Hi All

 

Can we partition USB drive in such a way that both partitions show up in Windows but 1 of them is locked and cannot be deleted/ formatted and the 2nd partition is available to the User as normal Flash drive.

 

Basically we want to give some presentation pre-loaded in the drive to Users but don't want them to remove the contents from the USB drive.

 

Thanks in advance.



#2 steve6375

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Posted 10 March 2014 - 11:30 PM

This is normally done by using a 'factory' tool, to reformat and split the USB into two 'devices' - one is the USB rd/wr part and the other is a CD-ROM part which is read-only.

 

So you need to find an 'MP-Tool' that will work with your type of USB flash drive.  See here.

 

P.S. Windows can only access the first partition on a 'removable' type of USB flash drive - so you can't partition this type of USb drive.

You could find a USB drive of the 'Fixed Disk' type and partition this as two NTFS partitions - then set one volume as Read-only using DiskPart and set file permissions on all the files on the whole volume using Windows - Security - Permissions on the drive letter (remove Full Control, Modify and Write) - see my blog here for details. It doesn't prevent it from being wiped and reformatted using a tool like RMPrepUSB though.


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#3 Chaudhry

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Posted 11 March 2014 - 07:17 AM

Thanks Steve

 

I am doing some reading now as you advised and will refer back with results.



#4 Chaudhry

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Posted 11 March 2014 - 07:51 AM

When I run Chip Genius v4 I get the following details. Any advise on which tool to use?

 

Description: [K:]USB Mass Storage Device(Generic Flash Disk)
Device Type:  Mass Storage Device
 
Protocal Version: USB 2.00
Current Speed: High Speed
Max Current: 200mA
 
USB Device ID: VID = 058F PID = 6387
Serial Number: 0346A3CF
 
Device Vendor: Generic
Device Name: Mass Storage
Device Revision: 010B
 
Manufacturer: Generic
Product Model: Flash Disk
Product Revision: 8.07
 
Controller Vendor: Alcor Micro
Controller Part-Number: Unknown(??) - 0xE512 - F/W FF00
Flash ID code:      45DE8493 - SanDisk - 1CE/Single Channel [MLC] -> Total Capacity = 8GB
 
 
 
Possible Flash Part-Number
----------------------------
Unknown
 
 
Flash ID mapping table
----------------------------
[Channel 0] [Channel 1]
45DE84937257 --------
-------- --------
-------- --------
-------- --------

 

 



#5 steve6375

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Posted 11 March 2014 - 10:49 AM

So it is an 8GB Flash drive?  Can you try another tool to get the controller info from 

http://flashboot.ru/files/vidpid/  - e.g. ChipEasy or one of the others?

It may be AU6989SNH

 

 

Failing that try:

Try AlcorMP + Settings - Mode - AutoRun  and point it at the ISO that contains your files that you want on the CD part.

 

http://www.flashdriv.../Alcor Firmware

http://translate.goo...v=210&es_sm=122


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#6 steve6375

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Posted 11 March 2014 - 11:07 AM

Or get a USB drive with an SMI controller and use the SMI_UFDiskUtilities tool?

http://www.rmprepusb...n-a-flash-drive



#7 Chaudhry

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Posted 11 March 2014 - 11:38 AM

Thanks again Steve for your update. Here is the info by Chip Easy v1.5.6.6

 

Logical drive   : K:\            Capacity:  0.0G
Device ID       : VID = 058F     PID = 6387
Device SN       : 0346A3CF
Device version  : 8.07
 
Device vendor   : Generic
Device model    : Flash Disk
Protocol        : USB2.0
Max power       : 200mA
 
Partition type  : FAT32          Device active   : no
Aligned state   : 0 KB, Have been Aligned
 
Controller      : AlcorMP
Controller model: AU6983/AU6987HL/SC708/FC8508 Help?
Flash Vendor    : SanDisk, Type: MLC, Single channel, Total: 8G
Flash ID        : 45DE8493       Flash Part: SDTNQFAMA-008G 
Score           : 15             (Normal Score >= 30) 

 

 

And I think your guess is right about AU6989 as the result below are from USBFLASHINFO 

 

Volume: K:
Controller: Alcor AU6989SNHL/AU6998SNHL
Possible Memory Chip(s): 
  SanDisk SDTNQFAMA-008G
  SanDisk SDZNQFAMA-008G
Memory Type: MLC
Flash ID: 45DE8493 7257
Flash CE: 1
Flash Channels: Single
Chip Code: 0xE512
Chip F/W: FF00
Group: 98
VID: 058F
PID: 6387
Manufacturer: Generic
Product: Mass Storage
Query Vendor ID: Generic
Query Product ID: Flash Disk
Query Product Revision: 8.07
Physical Disk Capacity: 8178892800 Bytes
Windows Disk Capacity:  0 Bytes
Internal Tags: AYWH-AAF2
USB Version: 2.00
Declared Power: 200 mA
ContMeas ID: D768-01-00
Microsoft Windows 7 SP1 x64
------------------------------------
Program Version: 7.8.0.537

 

 


Edited by Chaudhry, 11 March 2014 - 12:02 PM.


#8 steve6375

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Posted 11 March 2014 - 11:46 AM

Try here

http://www.flashdriv...gsc908an-g.html

Download from Server 2 is best

 

Beware that you can BRICK your USB pen though if it is not the correct version! You have been warned!



#9 Chaudhry

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Posted 12 March 2014 - 09:13 AM

Hi Steve

 

no success but I did learn something as the Flash chip was showing Sandisk I opened up the flash drive and found out that basically it have a 8GB Micro SD card inside which is glued to the PCB.

 

I am now looking for another vendor with possibility of SMI chip inside and will update here with my results.







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