Guest yaugin Posted September 20, 2008 Posted September 20, 2008 I have two hard drives in my system, and the C: drive is not the drive where Windows is installed. However, Windows constantly places io.sys and msdos.sys on the C: drive. If I delete them, Windows automatically re-creates them. Worse, it seems as though Windows actually overwrites the filesystem area where those files are placed -- some of my other files suddenly became 0 file size.
Guest Jim Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys "yaugin" <yaugin@gmail.com> wrote in message news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >I have two hard drives in my system, and the C: drive is not the drive > where Windows is installed. However, Windows constantly places io.sys > and msdos.sys on the C: drive. If I delete them, Windows automatically > re-creates them. Worse, it seems as though Windows actually overwrites > the filesystem area where those files are placed -- some of my other > files suddenly became 0 file size. Those two files are legacies from the distant past. Leave them alone. Jim
Guest Ronaldo Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys As you can read in the links, those files are boot sector files from the 9x Operative Systems (Win95-98-ME), and they should not be there, they are most likely trojans disguising as 9x boot files. Run an anti-Trojan to get rid of them or format the C:\ drive. A-Squared Free does a good job. http://www.emsisoft.com/en/software/free/ http://en.wikipedia.org/wiki/IO.SYS http://en.wikipedia.org/wiki/MSDOS.SYS ------------------------------------- "yaugin" <yaugin@gmail.com> escribió en el mensaje news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >I have two hard drives in my system, and the C: drive is not the drive > where Windows is installed. However, Windows constantly places io.sys > and msdos.sys on the C: drive. If I delete them, Windows automatically > re-creates them. Worse, it seems as though Windows actually overwrites > the filesystem area where those files are placed -- some of my other > files suddenly became 0 file size.
Guest Bill in Co. Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys Jim wrote: > "yaugin" <yaugin@gmail.com> wrote in message > news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >> I have two hard drives in my system, and the C: drive is not the drive >> where Windows is installed. However, Windows constantly places io.sys >> and msdos.sys on the C: drive. If I delete them, Windows automatically >> re-creates them. Worse, it seems as though Windows actually overwrites >> the filesystem area where those files are placed -- some of my other >> files suddenly became 0 file size. > > Those two files are legacies from the distant past. Leave them alone. > Jim Exactly. They are there for legacy compatibility reasons. Leave them there.
Guest Ronaldo Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys If you delete boot sector files they should stay deleted... files that keep coming back are to be suspected of and deleted by any means. Should the IO.sys and MSDOS.sys files be necesary, by all means replace them with authentic files. Check this http://www.file.net/process/io.sys.html Information and help with the io.sys file http://www.computerhope.com/issues/ch000872.htm ---------------------------------------- "Ronaldo" <private_email5@hotmail.com> escribió en el mensaje news:u%23PY0OtGJHA.3640@TK2MSFTNGP04.phx.gbl... > As you can read in the links, those files are boot sector files from the > 9x Operative Systems (Win95-98-ME), and they should not be there, they are > most likely trojans disguising as 9x boot files. Run an anti-Trojan to > get rid of them or format the C:\ drive. > > > > A-Squared Free does a good job. > > http://www.emsisoft.com/en/software/free/ > > > > http://en.wikipedia.org/wiki/IO.SYS > > > > http://en.wikipedia.org/wiki/MSDOS.SYS > > > > > ------------------------------------- > "yaugin" <yaugin@gmail.com> escribió en el mensaje > news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >>I have two hard drives in my system, and the C: drive is not the drive >> where Windows is installed. However, Windows constantly places io.sys >> and msdos.sys on the C: drive. If I delete them, Windows automatically >> re-creates them. Worse, it seems as though Windows actually overwrites >> the filesystem area where those files are placed -- some of my other >> files suddenly became 0 file size. > >
Guest Bill in Co. Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys Nonsense. Once again, those two files are SUPPOSED to be there, and they are ZERO bytes in file size. He doesn't need to replace them (if they were like that). End of story. Ronaldo wrote: > If you delete boot sector files they should stay deleted... files that > keep > coming back are to be suspected of and deleted by any means. Nonsense (as a generalization). > Should the > IO.sys and MSDOS.sys files be necesary, by all means replace them with > authentic files. > > > Check this > http://www.file.net/process/io.sys.html > > Information and help with the io.sys file > http://www.computerhope.com/issues/ch000872.htm > > > > ---------------------------------------- > "Ronaldo" <private_email5@hotmail.com> escribió en el mensaje > news:u%23PY0OtGJHA.3640@TK2MSFTNGP04.phx.gbl... >> As you can read in the links, those files are boot sector files from the >> 9x Operative Systems (Win95-98-ME), and they should not be there, they >> are >> most likely trojans disguising as 9x boot files. Run an anti-Trojan to >> get rid of them or format the C:\ drive. >> >> >> >> A-Squared Free does a good job. >> >> http://www.emsisoft.com/en/software/free/ >> >> >> >> http://en.wikipedia.org/wiki/IO.SYS >> >> >> >> http://en.wikipedia.org/wiki/MSDOS.SYS >> >> >> >> >> ------------------------------------- >> "yaugin" <yaugin@gmail.com> escribió en el mensaje >> news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >>> I have two hard drives in my system, and the C: drive is not the drive >>> where Windows is installed. However, Windows constantly places io.sys >>> and msdos.sys on the C: drive. If I delete them, Windows automatically >>> re-creates them. Worse, it seems as though Windows actually overwrites >>> the filesystem area where those files are placed -- some of my other >>> files suddenly became 0 file size.
Guest John John (MVP) Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys Those 0 KB files are automatically created when Windows XP is installed. The files are present for compatibility purposes with legacy applications. John Ronaldo wrote: > If you delete boot sector files they should stay deleted... files that keep > coming back are to be suspected of and deleted by any means. Should the > IO.sys and MSDOS.sys files be necesary, by all means replace them with > authentic files. > > > Check this > http://www.file.net/process/io.sys.html > > Information and help with the io.sys file > http://www.computerhope.com/issues/ch000872.htm > > > > ---------------------------------------- > "Ronaldo" <private_email5@hotmail.com> escribió en el mensaje > news:u%23PY0OtGJHA.3640@TK2MSFTNGP04.phx.gbl... > >>As you can read in the links, those files are boot sector files from the >>9x Operative Systems (Win95-98-ME), and they should not be there, they are >>most likely trojans disguising as 9x boot files. Run an anti-Trojan to >>get rid of them or format the C:\ drive. >> >> >> >>A-Squared Free does a good job. >> >>http://www.emsisoft.com/en/software/free/ >> >> >> >>http://en.wikipedia.org/wiki/IO.SYS >> >> >> >>http://en.wikipedia.org/wiki/MSDOS.SYS >> >> >> >> >>------------------------------------- >>"yaugin" <yaugin@gmail.com> escribió en el mensaje >>news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >> >>>I have two hard drives in my system, and the C: drive is not the drive >>>where Windows is installed. However, Windows constantly places io.sys >>>and msdos.sys on the C: drive. If I delete them, Windows automatically >>>re-creates them. Worse, it seems as though Windows actually overwrites >>>the filesystem area where those files are placed -- some of my other >>>files suddenly became 0 file size. >> >> > > >
Guest DrTeeth Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys On Fri, 19 Sep 2008 21:56:29 -0700, "Ronaldo" <private_email5@hotmail.com> wrote: >files that keep >coming back are to be suspected of and deleted by any means Rubbish generalisation! Many windows files and folders won't stay deleted, even though fixing certain issues requires their deletion. Good job they are recreated on reboot. Examples: recycle bin, prefetch folder, Temporary Internet Files and more. -- Cheers, DrT ** Stress - the condition brought about by having to ** resist the temptation to beat the living daylights ** out of someone who richly deserves it.
Guest Jason Posted September 20, 2008 Posted September 20, 2008 Re: io.sys and msdos.sys They go as far back as before DOS 3. I don't recall seeing then on my XP installations. As they are 0kb then there is no content in them. I wouldn't bother trying to delete them. "Ronaldo" <private_email5@hotmail.com> wrote in message news:u%23PY0OtGJHA.3640@TK2MSFTNGP04.phx.gbl... > As you can read in the links, those files are boot sector files from the > 9x Operative Systems (Win95-98-ME), and they should not be there, they are > most likely trojans disguising as 9x boot files. Run an anti-Trojan to > get rid of them or format the C:\ drive. > > > > A-Squared Free does a good job. > > http://www.emsisoft.com/en/software/free/ > > > > http://en.wikipedia.org/wiki/IO.SYS > > > > http://en.wikipedia.org/wiki/MSDOS.SYS > > > > > ------------------------------------- > "yaugin" <yaugin@gmail.com> escribió en el mensaje > news:4ac2b744-464b-481c-ba62-b2c47c17f8ee@q5g2000prf.googlegroups.com... >>I have two hard drives in my system, and the C: drive is not the drive >> where Windows is installed. However, Windows constantly places io.sys >> and msdos.sys on the C: drive. If I delete them, Windows automatically >> re-creates them. Worse, it seems as though Windows actually overwrites >> the filesystem area where those files are placed -- some of my other >> files suddenly became 0 file size. > >
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