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Thread: New EWF + MinLogon and CF instructions

  1. #61
    FLAC SFiorito's Avatar
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    i haven't tested wifi with minlogon, but regular networking works fine (including Windows networking, BTW). somone mentioned having problems with that a while ago. i just get the password dialog obviously, but it works fine. I was pointing you to the link up top because you asked if minlogon was necessary for EWF (no, it isn't). did you remove the network provisioning service in nLite by any chance?

  2. #62
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    It all works using winlogon, will take the plunge and switch to minlogon and test again ... will let you know.

  3. #63
    FLAC IntellaWorks's Avatar
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    check out

    check out the settings.ini thread use that nlite, it has minlogon / ewf on the OS and wifi works fine.
    Progress [I will seriously never be done!]
    Via EPIA MII
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    nLite WinXP pro on
    1GB Extreme III CF card
    Carnetix 1260 startup/ DC-DC regulator
    Software: Still, re-Writing my existing front end in .Net

  4. #64
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    Sorted .... I had a service disabled that I shouldn't .... thanks guys.

  5. #65
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    Need some help here.

    I have one hard disk, partitioned into Drive C and Drive D. Operating system is on Drive C.

    I do ewfmgr c: and it says it is enabled
    I do ewfmgr d: and it says it cannot be found

    But I try to copy files into drive D, and on the next reboot, these files goes missing.

    Does ewfmgr protect the entire harddrive? Anyway I can modify it so that it doesnt wipe drive D (which I dont intend to protect) too?

  6. #66
    FLAC IntellaWorks's Avatar
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    ewf.

    EWF protects the entire volume of a drive. There is a registry entry in EWF that allows you to have a safe partition I think, check out MSDN's EWF pages its all in there.
    Progress [I will seriously never be done!]
    Via EPIA MII
    512MB RAM
    OEM GPS (embedded)
    nLite WinXP pro on
    1GB Extreme III CF card
    Carnetix 1260 startup/ DC-DC regulator
    Software: Still, re-Writing my existing front end in .Net

  7. #67
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    I have been searching MSDN for days to find this.

    The most relevant would be:
    Protecting Multiple Volumes in a Hibernate Once/Resume Many Configuration
    One of the limitations of implementing a Hibernate Once/Resume Many environment on your device is that all of the partitions on your system must be protected by EWF. Because the file system caches information about each partition on the system, that file system information is loaded when the system boots from the hibernation file. If a write is made to the system and that write is not captured in the hibernation file, the next time the system boots, the hibernation file will not match the contents of the partition and the system may become corrupt.

    For example, on a system with two partition, C drive and D drive, you enable EWF. However, EWF is only enabled for C drive. D drive is not protected by EWF.

    When you creates the hibernation file, information about the contents of C and D drives are included in the hibernation file. This is because the file system caches information about the attached volumes in the system.

    When the system boots, it loads information in the hibernation file about both C and D drives.

    You then delete several files from D drive. Because D drive is not protected by EWF, these files are deleted from the system.

    The system reboots, and loads information from the hibernation file. Because the hibernation file still includes cached information about the contents of D drive, that information is loaded into RAM. Because the files that you deleted from D drive no longer exist in the system, the contents of the system's RAM and the contents of D drive do not match. There is now potential for the system to become corrupted. This is why EWF must protect all partitions in a Hibernate Once/Resume Many environment.

    However, it is possible to flush the contents of a non-boot volume from system cache by unmounting the volume before you create the hibernation file.
    But it says nothing about registry entries. It also says its possible to flush contents on a nonboot VOLUME and not PARTITION.. although earlier it was talking about partitions. I really dont understand this stuff, but i understand the concern for EWF to protecting every volume in the system.

    All I want to do is so that whenever I resume (HORM) the PC, the computer will continue to play the last song played before I shutdown.

    Anybody ever got this working?

  8. #68
    FLAC SFiorito's Avatar
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    if you've got an external removable drive then the best thing to do is set your HORM point without the drive plugged in. Or even if it's an internal drive. Unplug it, set your HORM point, then plug it back in. XP will automatically detect it at startup. As far as front ends resuming the last function (song, dvd, etc.) that's been covered lots of times before. the front ends need to build support for it. right now, none do. myself and Intellaworks both are working on our own frontends designed with EWF in mind.

    MSDN has sample code for unloading drives and hibernating (and then reloading the drives on resuming).

  9. #69
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    I could be wrong but I think RR has HORM support.

  10. #70
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    SFiorito,

    Unfortunately removable media is very unlikely. Where am I going to mount a second hard drive?

    I use HORM basically just to boot up to the same state all the time. In fact, I dont mind if its not ewf protected but it has to be- that's the source of all my problems.

    I wrote simple programs to monitor the states on my car, the mileage, the consumption, all these data and I want to store it on my second partition (drive D). I have the software I wrote in drive C. THe program resides on drive C but has its databse on drive D. But everytime I try to load the software, it loads blank, as if there are no data in the database file on drive D. That drives me crazy.

    Btw, what do you mean Front Ends has to have HORM support? How will the program have HORM support if anything it writes to its internal database will be wiped everytime the user turns off the PC? If there's a way, I 'd like to know too.

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