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#1
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USB flash drive vs USB hard disk
How could a device tell their differences? By looking for a partition table? I have a Panasonic TV that can record programs on USB hard disks only. I am thinking to deceive it by inserting a USB flash drive.... -- @~@ Remain silent. Nothing from soldiers and magicians is real! / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (Fedora 19 i686) Linux 3.11.6-200.fc19.i686 ^ ^ 17:18:02 up 2 days 11:57 0 users load average: 0.32 0.08 0.07 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
#2
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USB flash drive vs USB hard disk
Mr. Man-wai Chang wrote:
How could a device tell their differences? By looking for a partition table? I have a Panasonic TV that can record programs on USB hard disks only. I am thinking to deceive it by inserting a USB flash drive.... It's possible the information is part of the USB Class and is in the configuration table of the USB chip. See the section "Removable or what?" here, where it mentions DRIVE_REMOVABLE and DRIVE_FIXED. It sounds like the Panasonic is looking for "DRIVE_FIXED". http://www.uwe-sieber.de/usbstick_e.html Looking at this thread, it's suggesting the drive itself has an "RMB" bit. The hack in this case, involves preventing the OS from seeing the RMB bit. But you don't have access to the OS on the Panasonic. http://hardforum.com/showthread.php?t=1655684 You could try an SSD inside a USB SATA enclosure, as a means to make it look like a fixed disc. And then you'd be recording on flash chips, without the same issues as would exist with a hard drive. Paul |
#3
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USB flash drive vs USB hard disk
On 21/11/2013 6:01 PM, Paul wrote:
See the section "Removable or what?" here, where it mentions DRIVE_REMOVABLE and DRIVE_FIXED. It sounds like the Panasonic is looking for "DRIVE_FIXED". http://www.uwe-sieber.de/usbstick_e.html So I could not alter that GetDriveType() bit inside a USB flash drives? -- @~@ Remain silent. Nothing from soldiers and magicians is real! / v \ Simplicity is Beauty! May the Force and farces be with you! /( _ )\ (Fedora 19 i686) Linux 3.11.6-200.fc19.i686 ^ ^ 20:03:02 up 2 days 14:42 0 users load average: 0.00 0.01 0.05 不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA): http://www.swd.gov.hk/tc/index/site_...sub_addressesa |
#4
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USB flash drive vs USB hard disk
Mr. Man-wai Chang wrote:
On 21/11/2013 6:01 PM, Paul wrote: See the section "Removable or what?" here, where it mentions DRIVE_REMOVABLE and DRIVE_FIXED. It sounds like the Panasonic is looking for "DRIVE_FIXED". http://www.uwe-sieber.de/usbstick_e.html So I could not alter that GetDriveType() bit inside a USB flash drives? Some USB chips have "factory" software for preparing USB configuration information. But it's not something users normally get access to. Paul |
#5
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USB flash drive vs USB hard disk
Mr. Man-wai Chang wrote:
How could a device tell their differences? By looking for a partition table? Every USB device during its handshaking with the computer sends its presentation data that defines the device and how the computer will interface with the device. This is the USB enumeration process. It's the stuff that gets stored in the registry under the Enum key. Lots to read: http://www.lvr.com/usbcenum.htm http://msdn.microsoft.com/en-us/libr...(v=vs.85).aspx http://blogs.msdn.com/b/usbcoreblog/...-a-device.aspx |
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