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Reasons for flipping the Removable bit of a USB Flash Drive?

removable bit usb

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#1 agni


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Posted 09 March 2012 - 11:06 AM

I have come across a number of discussions related to flipping the removable bit of USB Flash Drives.

I found some reasons why a user would want to flip the removable bit.Are there any more advantages of flipping the RMB?
  • Partition the USB Flash drive and access the various partitions simultaneously.(Without flipping the bit , a UFD can be partitioned,but all partitons cannot be accessed simultaneoulsy.They can be accessed one by one using USB_Part_Flip.exe or Bootice.)
  • Write Protect your USB Flash Drive - http://reboot.pro/13899/ .The write protection works only for Fixed disks and not for removable media like UFDs.

The above benefits can be achieved without flipping the RMB by using a filter driver like dummydisk.sys or cfadisk.sys.

So why would a user want to flip the removable bit?
Are there any more benefits of flipping the Removable Bit?

#2 steve6375


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Posted 09 March 2012 - 11:17 AM

Some BIOSes only boot removable media as a floppy or ZIP drive and this can mean it fails to boot some OS's. If the UFD appears as a hard disk it has a much better chance of booting.

#3 ambralivio


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Posted 09 March 2012 - 12:54 PM


besides steve6375's correct comments, please take into consideration that while you're right saying :

"The above benefits can be achieved without flipping the RMB by using a filter driver like dummydisk.sys or cfadisk.sys"

the main problem with these drivers is that they need to be already installed in the system you want/have to boot.
Therefore, the portability of a bootable flash drive is arguable with them.


Also tagged with one or more of these keywords: removable, bit, usb

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