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Topic: Write protection

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	Hardware protection
		Hardware protection can accomplish various things, including: write protection for hard disk drives, memory protection, monitoring and trapping unauthorized system calls, etc. Again, no single tool will be foolproof and the "stronger" hardware-based protection is, the more likely it will interfere with the "normal" operation of your computer.
		Also, some existing hardware protection schemes can be easily bypassed, fooled, or disconnected, if the virus writer knows them well and designs a virus that is aware of the particular defense.
		Therefore, making a hardware protection system for such a computer typically involves deciding on some (small) set of operations that are "valid but not normally performed except by viruses", and designing the system to prevent these operations.
	www.softheap.com /internet/hardware-protection_43.html (0 words)

	Write - Search Results - MSN Encarta
		Write, in relation to computers, to transfer information either to a storage device, such as a disk, or to an output device, such as the monitor or...
		Write-In Vote, vote cast by writing in the name of a candidate whose name does not appear on the ballot.
		Write Protect, in computer science, to prevent the writing (recording) of information, usually on a disk.
	ca.encarta.msn.com /Write.html (180 words)

	Process Address Space Object (Windows 2000 Performance Counters Reference) (Site not responding. Last check: )
		Execute write copy memory is memory that can be executed by programs as well as read and written.
		No access protection prevents a process from writing to or reading from these pages, and an access violation is generated if either is attempted.
		Write copy protection is used when memory is shared for reading but not for writing.
	msdn.microsoft.com /library/en-us/counter/counters2_kpya.asp?frame=true (1213 words)

	Unable to Write to the Floppy Disk Drive - DP10314
		If the floppy disk has its write protection tab enabled, you will not be able to write to the floppy disk.
		In addition, if write protection is enabled in the BIOS for the floppy drive, then you will not be able to write to the floppy drive.
		Move the rectangular square on the floppy diskette so that the hole is covered (not write protected) and try to write to the floppy diskette.
	www.acersupport.com /technical/articles/commonOLD/fdd_write_dp10314.html (138 words)

	Catalyst Semiconductor, Inc. :: About Catalyst :: News
		To write protect a small section of memory to hold, for example, a serial number or system ID, a large section of memory does not need to be locked.
		Single-page write protection uses the memory array efficiently and is especially important with higher density memories.
		Write protection works with the hardware write protection pin to define which memory array segment is write protected.
	www.catsemi.com /about/article_73.html (667 words)

	How is floppy drive write protection enforced? - Wilders Security Forums
		From what I understand when you put in a write protected floppy some kind of sensor (either mechanical or optical) detects there is a hole open in the floppy.
		In this case, the OS would be the one enforcing the write protection.
		Now, assuming that the write protect sensor is correctly determining the presence of a write protect tab, we concluded that no disk writes could occur.
	www.wilderssecurity.com /showthread.php?t=39575 (2008 words)

	STMicroelectronics \| WRITE PROTECTION AND CODE STORAGE ON THE M25PXX SERIAL FLASH MEMORY FAMILY (Site not responding. Last check: )
		This can be extremely useful for applications that need to lift the write protection while updating a part of the memory, but do not need to lift the write protection on all of it (in the boot code region, for example).
		Entering Hardware Protection from this state is a two-step process: the Master needs to set the SRW D bit by software (using a Write Status Register instruction), and then to drive the Write Protect pin Low by hardware, i.e.
		The Hardware protection is very secure, as the only way to exit from it is to apply VCC on the Write Protect pin (transition C D).
	www.st.com /stonline/products/literature/an/8354.htm (2231 words)

	RC Forums: Home panel write protection
		Write Protecting your home panels enables a lot of automatic aliasing and home panel button creation when you are creating your.ccf from scratch with Pronto alone (no PC and ProntoEdit).
		Leaving the write protection disabled just allows the Pronto to start up at the first panel of the first device after a reset or a new CCF is loaded.
		Write protection is 1/2 of the auto alias trigger.
	www.remotecentral.com /cgi-bin/mboard/rc-pronto/thread.cgi?1551 (382 words)

	Write - Search Results - MSN Encarta
		Write, in relation to computers, to transfer information either to a storage device, such as a disk, or to an output device, such as the monitor or...
		Write-In Vote, vote cast by writing in the name of a candidate whose name does not appear on the ballot.
		inscribe, put pen to paper, transcribe, engrave, carve, pen, write down, put in writing, note down, enter, record, jot down, compose, create, script,...
	encarta.msn.com /Write.html (195 words)

	Write Protecting Jaz Disks (Site not responding. Last check: )
		Jaz drives can write protect Jaz disks, making them read-only so that the disks cannot be erased, formatted, or overwritten without explicitly being write-enabled by someone.
		This is a wise and useful precaution for both the ISS workstation data disks and the profiler data disks.
		Write protecting a Jaz disk can be done with Iomega's Jaz Tools software, but the Jaz tools need to be installed on one of the Windows machines.
	www.atd.ucar.edu /rtf/facilities/iss/manual/x1146.html (253 words)

	[No title]
		To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights.
		We protect your rights with two steps: (1) copyright the software, and (2) offer you this license which gives you legal permission to copy, distribute and/or modify the software.
		Many people have made generous contributions to the wide range of software distributed through that system in reliance on consistent application of that system; it is up to the author/donor to decide if he or she is willing to distribute software through any other system and a licensee cannot impose that choice.
	phpnuke.org /files/gpl.txt (2395 words)

	Write protection on Memory Stick \| Peripherals and Devices \| Nibble Guru - Tech Support, Computer Help, Tech Help \| Get ...
		Re: Write protection on Memory Stick by Anonymous Ghost on January 28th, 2005 04:14:29 AM i down loaded some music from one of the pc but opening it from another pc it indicated that it was write pratected.
		Re: Write protection on Memory Stick by Anonymous Ghost on March 31st, 2005 06:12:01 AM I have the same problem with an MP3 player, except that there is no physical write protect or hold switch on the player.
		Re: Write protection on Memory Stick by Anonymous Ghost on December 22nd, 2005 08:10:27 AM i try to save something on to my memory stick and it said that it is write protected.
	www.nibbleguru.com /probs/136/1923 (675 words)

	File Protection : Definitions (Site not responding. Last check: )
		Alter protection does not require a password for read or write access; write protection does not require a password for read access.
		To protect a file from being read, written to, deleted or replaced by anyone who does not have the proper authority, assign read, write and alter protection.
		To completely protect a file with one password, use the PW= data set option.
	www.dnr.state.ak.us /ssd/whtest/sashtml/lrcon/znid-354.htm (344 words)

	does clone cd help breaking copy- write protection
		clony detects the protection on the cd and passes the copying parameters to clone for the burn.
		The only way to "Break" or alter the protection that I know of, is to get a patch or an.exe file that has been modified.
		What I Meant by break copy write protection of my cd is actually making beckup copies of it.
	www.cdrinfo.com /Forum/printable.asp?m=5840 (0 words)

	flashdrive Write Protection Removal - Tech Support Guy Forums
		Well, some FLASH drives have a little write protection switch on them, that's the first place I'd look.
		Windows has write protected this disk I have also got full Admin rights and have been through the help files etc 7 just about everything else
		Is a myflash cost £26 when bought neither has a write protect switch Both worked fine 4days ago but there has been a windows update since then,a now I have this problem, by the way my pension is £ 84 weekly very weakly hi hi
	forums.techguy.org /hardware/469022-flashdrive-write-protection-removal.html (533 words)

	Computer Forensic Protection Paralan SR14/SR15 Handled by Sierra Technologies, LLC
		Paralan's SCSI Write Blocker allows data to be read at full speed, however, it will block any and all write commands thus preventing the possibility of writing to, or formatting the drive under examination.
		To prevent any system problems when write commands are ignored, a false acknowledge of writing is reported to the host computer.
		By using a Hardware Write Blocking interface, Computer Forensic Investigation may be accomplished without fear of compromising the data on the drive.
	sierra-cables.com /paralan/SR14.htm (0 words)

	Write Protection
		Accucadd needs to be able to write to many of its own data files in order to operate properly.
		at least one of the files that Accucadd needs to write to has its Read Only attribute are set.
		Note that if you try to "install" Accucadd by dragging and dropping an image of it from a CD-R it will by default be read-only and you will get this condition.
	www.accucadd.com /TechNotes/WriteProtect/WriteProtect.htm (169 words)

	Disabling write protection
		The write protection has to be temporarily disabled for this.
		The contacts have to be connected firmly, for as long as the write protection has to be disabled.
		The spot has to be connected to GND for as long as the write protection has to be disabled.
	www.dietmar-h.net /schreibschutz_en.html (929 words)

	SCSI write blocker, computer forensic investigation protection and preservation
		Paralan's SCSI Write Blocker allows data to be read at full speed, however, it will block any and all write commands thus preventing the possibility of writing to, or formatting the drive under examination.
		To prevent any system problems when write commands are ignored, a false acknowledge of writing is reported to the host computer.
		By using a Hardware Write Blocking interface, Computer Forensic Investigation may be accomplished without fear of compromising the data on the drive.
	www.paralan.com /sr14.html (305 words)

	w-gregg.juneau.ak.us: FreeDOS FDSHIELD malware action blocker: help reduce virus activity (April 2005)
		If you use delayed-write caches while disk or boot sector protection is on, DOS will fail to notice the write denial until the write-delay has elapsed, so delayed-write caches should not be used with disk write protection.
		Write protects program files with the com, exe, and sys suffix.
		Write protects hard disks and all other non-diskette drives with FAT filesystem, like RAMDISKs.
	home.gci.net /~wmgregg/2005/text/2005d00-fdshield.htm (3331 words)

	USB Write Block
		This free download is provided as is. The utility takes advantage of the Windows XP Service Pack 2 ability to toggle write protection on/off USB devices.
		When you close the application, the last state of protection will be applied until you run the program again.
		For example, if you choose to activate USB write protection and then close the program.
	www.m2cfg.com /usb_writeblock.htm (163 words)

	Memory Protection Constants
		Protection attributes cannot be assigned to a portion of a page; they can only be assigned to a whole page.
		An attempt to read from, write to, or execute the committed region results in an access violation exception, called a general protection (GP) fault.
		Thus, if two requests are made to write to the same memory address, only the more recent write may occur.
	msdn2.microsoft.com /en-us/library/aa366786.aspx (645 words)

	How do I use the REV disk Access (Read/Write) Protection option?
		The Access (read/write) protection option creates a password protected disk that will prevent unauthorized users from adding, deleting, editing, or viewing your files.
		Protection will be suspended until you either eject the disk or turn off your computer.
		This fully removes access protection from your disk, so a password will no longer be required to access the disk.
	www.iomega.com /europe/support/english/documents/13011.html (305 words)

	Beginpc.com - Floppy Drive
		This is located at the bottom left hand corner of the disc and determines whether you can or cant write data to the disc, depending whether the tab is open or closed.
		When the disc is inserted one of the first things the drive circuit board does is to check whether light is visible through the write protection window.
		If the window is open and a beam from a light emitting diode can be detected on a photo sensitive diode on the opposite side of the disk, the drive then knows that the disk is write protected.
	members.fortunecity.com /shaunywhite/page17.html (443 words)

	Computer Forum, Computer Help \| PC Club Forums - Write-protection error
		You may have some dirt in the sensor for the write protect tab.
		If there is such an option on your family's system, it's a good bet that it got set somehow.
		are you writing to or from the floppy?
	www.pcclub.com /forum/messageview.cfm?catid=32&threadid=9705 (178 words)

	Write Protection Switch
		Some memory cards are having a write protection switch integrated on the side or on the back of the memory card for preventing the content from being erased or overwritten by accident, just like floppy disks.
		Both SD Memory Card and xD-Picture Card have their write protection switch on the side of the memory card in contrast to the Memory Stick PRO and some Memory Stick Duo that have their switch on the back of the card.
		The SmartMedia Card is also supporting write protection but not with a switch.
	www.allmemorycards.com /glossary/write-protection-switch.htm (129 words)

	Write Protection
		Enable write protection: Enables write protection, so that snippets can only be displayed.
		Password to remove write protection: To avoid that one can disable the write protection simply by unselecting the former option you can protect changes on this set of options by querying a password.
		The password is asked when applying changes here on this dialog or when changing write protection using the menu.
	www.ograhl.com /snippetcenter/pro/en/help/options_readonly.htm (92 words)

	OpenMCL Documentation (Site not responding. Last check: )
		The kernel allocates write-protected pages at the "end" of various data region (stacks, the dynamic heap, and the EGC memoization buffer.) For every write-protected region, it maintains a data structure which describes the range of pages that are write-protected and some information about why they're protected.
		On receiving a possible write-protection exception (usually mapped to SIGSEGV), the MCL kernel's exception handler determines whether the exception was caused by a write and, if so, what address was being written to.
		Memory-access errors not caused by writes aren't handled by MCL
	openmcl.clozure.com /Doc/Write_002dprotection.html (89 words)

	Computer Forensics Write Blockers (Site not responding. Last check: )
		The FireFly is a compact hardware based write blocker which will allow an IDE or SATA hard drive to be connected to a IEEE 1394a (400Mb/s) or 1394b (800Mb/s) compliant FireWire device chain.
		The FireChief is a dual bay FireWire to IDE enclosure with one drive bay that is hardware write protected (FireBlock) and one drive bay that is write enabled (FireWrite).
		These units can be used for writing and the forensic acquisition of information found on multimedia and memory cards.
	www.digitalintelligence.com /forensicwriteblockers.php (261 words)

	UltraBlock (Site not responding. Last check: )
		In Write Protect mode, the UltraBlock will prevent ANY and ALL writes from reaching the attached device.
		In Read/Write mode (non-Write Protected), it can be used to attach a drive to be used for receiving images on your FireWire chain.
		The UltraBlock family of write blockers is also available in a complete forensic kit available on the UltraKit page.
	www.digitalintelligence.com /products/ultrablock (643 words)

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