PC-DOS 7.1 FDISK32 support

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PC-DOS 7.1 FDISK32 support

Postby CJ » 6. Nov 2016, 07:23

I'm trying to install PC-DOS 7.1. Note that this is not PC-DOS 7.0 Rev 1 (aka PC-DOS 2000), but a subsequent update which added LBA and FAT32 support to the kernel.

PC-DOS 7.1 is still available for download from IBM, as part of the IBM ServerGuide Scripting Toolkit, DOS Edition, version 1.3.07 (https://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-53564). It replaces FDISK.COM with FDISK32.COM, and added FORMAT32.COM.

I created a boot disk, then created a basic DOS VM with all defaults, and booted the boot image. When I FDISK the hard drive, FDISK32 issues a warning:

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A:\>fdisk32 1 /pri:500

*********** LBA reported Head,Sector,Track
* WARNING * values don't match the reported
*********** total number of sectors. Error
in hardware or BIOS is a probable cause.


However, it creates the partition anyway:

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A:\>fdisk32 /status
*********** LBA reported Head,Sector,Track
* WARNING * values don't match the reported
*********** total number of sectors. Error
in hardware or BIOS is a probable cause.
                         Fixed Disk Drive Status
  Disk   Drv   Mbytes   Free   Usage
    1           500     500
          C:    500


After rebooting, I format and hit two issues.

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A:\>format32 c:
The /Q switch is required at this time.
PC DOS FAT32 Format Utility

Warning: The drive you specified is not partitioned as a FAT32 drive.


First, why would FORMAT32 require a quick format on a brand new partition? Second, I haven't found a way to specify FAT32 for the partion. FDISK32 doesn't seem to support it:

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A:\>fdisk32 /?
Configures a hard disk for use with PC DOS.

FDISK32 [/STATUS | d /PRIO[O]:n | d /EXT:n | d /LOG[0]:n | d /MBR]

    /STATUS     Displays the status of the fixed disk drive
    d           is the physical drive # (1,2,...)
    n           size of partition in megabytes
    /PRI        Create a primary drive
    /EXT        Create an extended partition
    /LOG        Create a logical drive within an extended partition
    /MBR        Write a new Mast Boot Record


FORMAT.COM has no problem formatting the partion as FAT16, but I want a FAT32 partition.

Does the FDISK32 warning reflect a bug in VB?

--nathanael
CJ
 
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Joined: 15. Aug 2008, 20:30

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