Changes between Initial Version and Version 1 of Ticket #40, comment 12


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Timestamp:
Apr 19, 2017, 5:20:01 AM (7 years ago)
Author:
erdmann
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  • Ticket #40, comment 12

    initial v1  
    4747If I try to follow the advice and do a chkdsk under Windows, Windows cannot find anything wrong with the FAT32 formatted USB stick and therefore I cannot get rid of this problem (I guess reformatting would do ...).
    4848
    49 For /largefiles: I see that FAT32.IFS does NOT export "FS_MPSAFEFLAGS2" (goes into a 16-bit segment) and "FS32_ATTRIBUTE" data dwords (the latter has to go into a 32-bit data segment).[[BR]]
     49For /largefiles: I see that FAT32.IFS does NOT export "FS_MPSAFEFLAGS2" (goes into a 16-bit data segment) and "FS32_ATTRIBUTE" data dwords (the latter has to go into a 32-bit data segment).[[BR]]
    5050As far as I understand it is essential to export "FS32_ATTRIBUTE" data word for the kernel to properly recognize the IFS as one with 32-bit entrypoints and "FS_MPSAFEFLAGS2" for its further capabilities (needs kernel spinlock when accessing underlying .ADD or not etc.).[[BR]]
    5151OpenJFS code will reveal to you what needs to be set in "FS32_ATTRIBUTE" and "FS_MPSAFEFLAGS2". Unfortunately this is all mostly undocumented (as so many other things in OS/2).[[BR]]