Windows 10 Compression

Discussion in 'Windows 10' started by Flipp3r, Apr 21, 2015.

  1. Flipp3r

    Flipp3r MDL Expert

    Feb 11, 2009
    1,494
    633
    60
    Hi All,

    Does anyone know if compression has been implemented yet in any of the Win10 builds?
    How would you install the OS? Will it be an option during installation?

    Compression may have been good with smaller SSD's (that's what wimboot was for) but do we really need it now?
    I've used "Double Space", "DriveSpace" & Stacker to know I'd rather be without!

    Any thoughts?
     
  2. pisthai

    pisthai Imperfect Human

    Jul 29, 2009
    6,731
    1,955
    210
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. burfadel

    burfadel MDL EXE>MSP/CAB

    Aug 19, 2009
    2,628
    3,835
    90
    It had been implemented, you need to run disk cleanup wizard and it's an option through there. This compression is NOT the same as NTFS file compression. It's supposedly better compression and faster than that. If you enable NTFS for compression it disables this compression.

    I think it should be mandatory, at least on Windows Apps, the driver store folder as well as a couple of other inefficient or large rarely used repositories.
     
  4. Bezalel

    Bezalel MDL Member

    Apr 30, 2012
    230
    23
    10
    If you are using DISM you can use the /compact switch, I'm not sure when it was implemented but it works on 10041 and 10049. I haven't figured out how to get the recovery enhancements, reagentc doesn't seem to let me specify anything other than the location of a WIM file for the OS image.
     
  5. T-S

    T-S MDL Guru

    Dec 14, 2012
    3,988
    1,313
    120
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  6. gabrielmorrow

    gabrielmorrow MDL Member

    Jul 5, 2013
    193
    15
    10
  7. Soulfate

    Soulfate MDL Member

    Feb 14, 2011
    183
    46
    10
    I've compressed following native files in my Windows 8.1 WIM:
    *.exe
    *.dll
    *.msi (can be skipped)
    *.cab (can be skipped)
    *.bmp
    *.wav
    *.ocx
    *.pak
    *.sys
    *.inf
    *.pnf
    *.xml
    *.chm
    *.mui
    *.db
    And there is no bad impact because most of these files are just "read only" files and do not need to be modified.
    You could try to compact "WinSxS" too, but I've not tested.
    No impact on a SSD and FX-6300 CPU.

    And if the Windows 10 compression is better than the NTFS compression, just forget it.
     
  8. Flipp3r

    Flipp3r MDL Expert

    Feb 11, 2009
    1,494
    633
    60
  9. Superfly

    Superfly MDL Expert

    Jan 12, 2010
    1,131
    539
    60
    Compression is awesome - only works with SSD's though.

    Capture.PNG
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  10. T-S

    T-S MDL Guru

    Dec 14, 2012
    3,988
    1,313
    120
    You can safely compress everything (well except the bootmgr) the NTFS compression is smart enough to not waste time trying to recompress the already compressed files. You will see them in blue but they are practically untouched.

    And on SSDs, generally you don't lose performance, likely you will get a gain.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  11. janos666

    janos666 MDL Novice

    Feb 25, 2012
    37
    3
    0
    #11 janos666, Apr 21, 2015
    Last edited: Apr 21, 2015
    Although, NTFS compression might got improved under Win10, I think it is the same.
    I accidentally compressed my system files with the disk cleanup utility and I could completely reverse it (proof: the Disk Utility yet again offered me the compression like it never happened) by decompressing every files like they were compressed by the age old NTFS compression (I used the old command I can't recall from memory but Google was my friend).

    That's not true. You can manually compress the files on an HDD. The problem is that HDDs work very slow with fragmented filesystems and compression often causes fragmentation. It doesn't matter that much on SSDs (sequential throughput in MBPS is also higher but random IOPS is A LOT higher).
     
  12. Kuantum Freak

    Kuantum Freak MDL Junior Member

    Mar 30, 2015
    99
    16
    0
    #12 Kuantum Freak, Apr 21, 2015
    Last edited by a moderator: Apr 20, 2017
    This is a little off topic, but how would upgrading Windows 8.1 to Windows 10 on a compressed OS go? My Asus has 32Gb of eMMC space and runs a compressed OS. When I tried upgrading to Win 10, it gave me the error that it could not install on a compressed OS. When Windows 10 RTM comes out, how would the upgrade go?


    EDIT:
    It does touch on the topic but this article was written about a month ago, does anyone have more news about it?

    Code:
    [h=2]We're working on bringing upgrade to low capacity devices[/h][FONT=WOL_Reg]The reason Windows 8.1 devices using WIMBOOT are not yet able to upgrade to Windows 10 is because many of the WIMBOOT devices have very limited system storage. That presents a challenge when we need to have the Windows 8.1 OS, the downloaded install image, and the Windows 10 OS available during the upgrade process. We do this because we need to be able to restore the machine back to Windows 8.1 if anything unexpected happens during the upgrade, such as power loss. In sum, WIMBOOT devices present a capacity challenge to the upgrade process and we are evaluating a couple of options for a safe and reliable upgrade path for those devices.
    [/FONT]
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  13. Shenj

    Shenj MDL Expert

    Aug 12, 2010
    1,557
    652
    60
    The setup will do the work for you.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  14. burfadel

    burfadel MDL EXE>MSP/CAB

    Aug 19, 2009
    2,628
    3,835
    90
  15. burfadel

    burfadel MDL EXE>MSP/CAB

    Aug 19, 2009
    2,628
    3,835
    90
  16. burfadel

    burfadel MDL EXE>MSP/CAB

    Aug 19, 2009
    2,628
    3,835
    90
  17. burfadel

    burfadel MDL EXE>MSP/CAB

    Aug 19, 2009
    2,628
    3,835
    90
  18. robmadden1

    robmadden1 MDL Member

    Oct 21, 2009
    186
    30
    10
    Is there any reason not to use the LZX compression? Will it make the file load slower when compacted in this format?