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  1. ElenaP

    what will happen without inertia

    I'm trying to answer his question, which is probably incorrect but still fun. You are trying to explain why the question is incorrect, which is probably correct but nonetheless boring. By the way, F = ma and F = k*m1*m2/r^2 are different things. If you are allowed to change the world at will...
  2. ElenaP

    what will happen without inertia

    The inertia is not the same as mass or gravity. Mass is the property of an object. Inertia is the ability of the object to keep moving (at whatever speed, possibly zero). Gravity is the ability of two objects to attract each other. If you drop an object and there is no inertia, the obejct...
  3. ElenaP

    what will happen without inertia

    On the more global scale, no Earth rotation, climate change, and so on.
  4. ElenaP

    what will happen without inertia

    Lots of fun. No brakes in cars, except for parking. All stopping is by wind resistance as soon as engine stops. Cannot remove the parking brake because cars will get blown around by the wind. No internal combustion engine because flyweels do not work. Probably no jet as well? Looks like...
  5. ElenaP

    please help me with data recovery after paragon disaster :(

    Vesper8, If the small partition was before the large one, then expanding the large partition involves either renumbering all clusters or moving all the data. If either of these processes is interrupted midway, the result is not easily recoverable. At this point, the best looking course of...
  6. ElenaP

    please help me with data recovery after paragon disaster :(

    How were the partitions positioned initially? Was the small unallocated partition before or after the large partition?
  7. ElenaP

    How much cache does a typical desktop really need?

    Buffered writes in RAM are not delayed for long, because of the risk of loss of power or hard crash. Buffered writes on SSD can be delayed as long as there is a free space on SSD.
  8. ElenaP

    NAS Storage?

    We have a QNAP unit and we once had a real (not simulated) hard drive failure with it. The firmware handled that less than impressive. Next time we probably go with our own build.
  9. ElenaP

    General Data Recovery Software - Win7-64

    Still, it would be useful to know the nature of the problem. Might be that the drive is needed to be imaged first, if there is a mechanical problem involved.
  10. ElenaP

    Will somebody benchmark WHOLE DISK COMPRESSION (HD,SSD,RAMDISK) please!!

    Scrap it, we need something less sinister. Say, create a regular file filled with a compressible pattern. Write a similar pattern to that file, measure speed. This is an uncompressed sample. Now, compress the file. It will inevitably fragment. Write a similar pattern again, that is...
  11. ElenaP

    Will somebody benchmark WHOLE DISK COMPRESSION (HD,SSD,RAMDISK) please!!

    We need a benchmark then. That would be interesting to develop. Initial condition - an unfragmented file compressed, say, 16:14. This is easy to create. Test 1 - write the data with exactly the same compression ratio over the original file, say, random 4K writes. The file will be...
  12. ElenaP

    Will somebody benchmark WHOLE DISK COMPRESSION (HD,SSD,RAMDISK) please!!

    Just checked and I happen to have two disk image files (VMWare) about 2GB each with 8,000+ disjoint fragments each on this machine. Not as obscene as 10,000, but still quite good. Plus more than 10 files with 1,000+ fragments, including an Outlook PST database. All of these are compressed. The...
  13. ElenaP

    Will somebody benchmark WHOLE DISK COMPRESSION (HD,SSD,RAMDISK) please!!

    Nothinman, in practice, the thing just gets damn slow if there are 10,000 fragments of the file and you happen to need a full read. This does not affect the overall performance significantly, but certain operations (like a full-text search in a large email base) make you wonder "what is it...
  14. ElenaP

    Recommend me a RAID card

    There is one more assumption involved, about the uniform distribution of failures. The calculation assumes that the fact of encountering the first read error does not change the probability to encounter the next one, and also that the probability of read errors does not change over time.
  15. ElenaP

    Will somebody benchmark WHOLE DISK COMPRESSION (HD,SSD,RAMDISK) please!!

    Typically, a compression unit on NTFS would be 16 clusters, 64KB. So the system has to recompress 64K even if you write one byte. There is another problem, more important, that compression coupled with random writes induces bad fragmentation. The compression unit is 16 clusters. If the original...
  16. ElenaP

    Restart loop?!

    I'd check if something overheats. If you leave the system off for a long time, it would then start and work for a relatively long time, because the whatever the offending part is, it is cold. As the system heats up, the time between repoots becomes progressively shorter. Did you check all the...
  17. ElenaP

    win7 won't recognize hard drive, bios does

    Can we get a screen shot of a Disk Management?
  18. ElenaP

    Asus 1201HAB will not power up/charge

    Try to remove the battery and power up on the AC only. If this does not help, the laptop AC/charge circuitry gone bad.
  19. ElenaP

    Random shutdown, now no post: Troubleshooting

    Remove anything except PSU, CPU with heatsink and fan(s), mainboard, and speaker. Make sure the speaker is connected. Try to power on. If you get multiple short beeps or continuous short beeps ("RAM not detected or faulty"), then continue adding components one by one. If you do not get any sound...
  20. ElenaP

    Motherboard not detecting hard drive

    You should try the disk on another known-good computer (it is always better to connect the problem drive to the motherboard directly). If you can see the drive in there, that means the MB is defective (at least SATA ports). Otherwise, the disk is failed and the only option remains is data...
  21. ElenaP

    36 gig raptors-writing zeros to drive

    In WD Diagnostics, you need WRITE ZEROS, FULL ERASE option, and that would be sufficient for resell.
  22. ElenaP

    Huge problem, really need help!

    Also, do a memory test (RAM), using (free) Windows Memory Diagnostic. Leave it to run for at least a couple of hours.
  23. ElenaP

    Very slow boot up and/or stuck shutdown--MOBO or Software?

    When you encounter with such strange issue firstly you should back up all the important data off the drive and then use various diagnostic tools to check the system (drive, memory and etc.). Check the hard drive SMART Status, check the Windows Event Logs for unusual events.
  24. ElenaP

    Why no other hybrid drives?

    The HDD will still be used where write-to-read ratio is high. Think logging (e.g. video logging).
  25. ElenaP

    Why no other hybrid drives?

    What is the expected lifetime of the Momentus XT flash buffer?
  26. ElenaP

    MSI 785Gm-E53 AMD board - NO POST

    Is the speaker connected, and are there any beeps from the speaker?
  27. ElenaP

    hard drive partitions

    If Windows Disk Management indicates the full size of the hard drive (not the size of the partitions) as 15GB, you should check if HPA (capacity clipping) is for some reason in effect. Consider trying this utility (freeware) http://hdd-tools.com/products/cr/download/crsetup.exe (under Windows...
  28. ElenaP

    Game Freezing Problems

    If you have a spare SATA cable, try replacing a cable just in case. If you do not have one available, swap the SATA cable between velociraptor and the suspect SSD to see if the problem migrates to velociraptor. However, do not use the cable from the good SSD, or you'd break the boot process.
  29. ElenaP

    Weird HD problem when turning PC on

    Theoretically, if the disk you select manually is the same that is selected for automatic startup, the boot process should be the same regardless of the selection method. Hence, this should not be a boot loader issue. Did you positively checked that the first boot device is set to the hard...
  30. ElenaP

    Weird computer shutdown/restart problem

    ATX spec is +11.4 to +12.6V on +12V rail. You can probably try disconnecting the DVD and some of the hard drives temporarily to reduce load, and see if this solves the problem.
  31. ElenaP

    SSD's and Full Disk Encryption - any data?

    TrueCrypt has a full disk encryption option. Also, it is possible to have a large container. In both cases, one capacity of the container worth of data is used for initialization of the container (i.e. each sector in the container is written to once), and you lose TRIM. Other than that I can't...
  32. ElenaP

    Weird HD behavior UPDATE

    Does it get better if the network is unplugged completely? If you pull the network cable off, or disable the wireless adapter completely? edit: does not really look like a hard drive problem.
  33. ElenaP

    Graagh! 2x Hitachi 2TB, both DOA

    There are several possible causes for to get a batch of DOA hard drives. Most widespread is the damage during shipping. Basically if you drop a boxload of hard drives, some are likely to get damaged. Repeat that several times and the entire lot is bad.
  34. ElenaP

    Strange harddisk problem: always different files give CRC errors

    The motherboard manual says there is a Drive Xpert function built-in. This seems to imply that there are different types of SATA ports, i.e. not all SATA ports are equal. Please clarify if this function is in use, and also exactly what SATA ports are involved in your tests.
  35. ElenaP

    Bad Battery...Or Worse?

    Check and possibly clean the connection between the battery and the laptop. Maybe there is something "foreign" on the battery terminals, causing an intermittent contact problem.
  36. ElenaP

    External HDD - partially corrupt

    Note that there are two steps in "dismantling" the external hard drive. The external hard drive is just a usual "internal" hard drive packaged in the casing (sometimes called "box" or "enclosure"). The casing contains the USB-to-IDE (or SATA, or whatever) controller and the power connector, and...
  37. ElenaP

    New Hard Drive Setup Issues

    Try reflashing the BIOS to the latest available. Also, there might be a jumper on the HDD to limit capacity to 137GB, but that might be not an acceptable solution.
  38. ElenaP

    GeekSquad 8GB flash drive not showing up in Win 7 Pro

    If it does show up in the Device Manager but nowhere else, try uninstalling it in the Device Manager and reboot, without actually removing the drive. Also, did you try a diffferent USB port?
  39. ElenaP

    Completely MESSED up my RAID-1 array - i think...

    Try booting into Windows 2003 and run a demo version of any data recovery software that supports ext3 (there are quite a few around). A demo version would at least confirm if the data is still there. If yes, you can continue the chase then, knowing that the data is still recoverable.
  40. ElenaP

    Hard drive broke but really want to access it

    What is the exact model name of the Maxtor drive as displayed by BIOS during startup? Certain Maxtor models would revert to displaying a production series name if there is a problem with the firmware.