Changes between Version 2 and Version 3 of Ticket #17, comment 5


Ignore:
Timestamp:
Aug 4, 2015, 7:50:21 PM (9 years ago)
Author:
Valery V. Sedletski
Comment:

Legend:

Unmodified
Added
Removed
Modified

  • Ticket #17, comment 5

    v2 v3  
    1515So, -fpi87 helps? What is the principal difference between using FPU and its emulation? So, it won't throw a floating point exceptions? Really, I think, better to eliminate using the FP at all. I know the FORMAT routine uses it when showing the % complete. Not sure about CHKDSK. Also, didn't touched cachef32.exe and other utilities at all.
    1616
    17 Also, why the next patch? The remount_media() is in fact DSK_REDETERMINEMEDIA ioctl, it needs to be done after format is complete. Before FORMAT or CHKDSK, you must issue the DSK_BEGINFORMAT, to remount the volume before formatting/checking IFS's in DASD mode. After all, you make DSK_REDETERMINEMEDIA, which remounts it in normal mode again (where all FS structures are valid). Trying to zero-out structures (including the boot block) can lead to a trap.
     17Also, why the next patch? The remount_media() is in fact DSK_REDETERMINEMEDIA ioctl, it needs to be done after format is complete. Before FORMAT or CHKDSK, you must issue the DSK_BEGINFORMAT, to remount the volume before formatting/checking IFS's in DASD mode. After all, you make DSK_REDETERMINEMEDIA, which remounts it in normal mode again (where all FS structures are valid). Trying to zero-out structures (including the boot block) after remounting the drive can lead to a trap.