Command: aefdisk

  AEFDISK is a DOS based, command line driven disk partitioning
  utility. The max. supported HD size is 127GB


  aefdisk [harddisk number] [switches] <command1> [command2] ...


  Valid commands are:
  /pri:<size>:<type>[:n] - create primary partition
  /ext:<size>[:5][:n]    - create extended partition
  /log:<size>[:type]     - create logical drive
  /delete:<n>            - delete an entry
  /deltype:<type>[:n]    - delete partition(s) of specified type
  /delactive             - delete active partition
  /delall                - delete all partitions on a disk
  /notdel:<type>[,types] - delete all except specified type(s)
  /activate:<n>          - activate a partition
  /deactivate            - delete active flag
  /changetype:<type>:<n> - change type of partition
  /hidefat[:n]           - hide FAT partition(s)
  /hident[:n]            - hide NTFS/HPFS partition(s)
  /unhidefat[:n]         - unhide FAT partition(s)
  /unhident[:n]          - unhide NTFS/HPFS partition(s)
  /formatfat[:n][:label] - format FAT partitions, can be a switch
  /allsize               - put the HD size in ALLSIZE environment var.
  /freesize              - puts size of unpartitioned space in FREESIZE
  /psize                 - puts n-th partition's size in PSIZEnn
  /ptype                 - puts n-th partition's type in PTYPEnn
  /putactive             - puts active partition nr. in ACTIVE variable
  /numhds                - puts number of available HDs in NUMHDS
  /mbr                   - install the standard DOS MBR loader
  /sort                  - sorts the partition table in physical order
  /save:<filename>       - save the MBR to a file
  /restore:<filename>    - restore the MBR from a file
  /cvtarea:<n>           - create a contiguous file for NTFS conversion
  /label:<n>:<label>     - create/change label on formatted FAT partition
  /show                  - show partition table
  /dump                  - hexadecimal dump of partition table
  /info                  - show logical characteristics
  /?                     - this help message

  Valid switches are:
  /rel                   - use percentages at size definition
  /y                     - assume Yes on all queries
  /wipe                  - wipe partitions to be deleted
  /reboot                - reboot when ready
  /dynamic               - leave space for Win2000/XP/2003 dynamic volume
  /noebios               - disables EBIOS access
  /nolimit               - disables FAT limit check


  - Options between <> are compulsory, between [] are not
  - n is a valid partition number. From 1 to 4 it means a primary
    partition. From 5 it means a logical drive.
  - Harddisk number is a number starting from 1. The default is 1.
    If you specify '*' here, then all commands will be executed on
    all installed harddisks.
  - The /rel and /formatfat switches are effective for the commands
    that follow them.
  - The type is hexadecimal. Don't append a 'h' at the end.

  If there was an error then the return value is 1, else 0.
  On error, the modified partition table will not be written.
  For more information see:
  C:\FREEDOS\DOC\aefdisk.txt OR:
  AEFDISK.TXT?ref_type=heads OR:


  - aefdisk 2 /delall /pri:200:6 /pri:300:7:4 /activate:1
    Delete all partitions on the second harddisk and then create
    two primary partitions. The first is a 200 MB BIGDOS partition,
    and it is be created in the first available entry. The second
    is a 300MB HPFS partition, and it is created in the fourth entry.
    The first primary partition will be active.
  - aefdisk /pri:3000:7 /ext:10000 /log:10000
    Create a 3GB primary HPFS and a 10GB extended partition with
    one 10GB logical drive.
  - aefdisk /dynamic /pri:0:c
    Find the largest available space and create a FAT32 partition
    there. Leave 10MB unpartitioned space at the end of the
    harddisk for Win2000/XP/2003 dynamic volume conversion.
  - aefdisk /rel /pri:30:6 /ext:70 /log:40 /log:60
    Calculate the available unpartitioned space first. Then create
    a primary BIGDOS partition, which occupies 30% of the free space.
    The remaining 70% space is assigned to an extended partition.
    In the extended partition, there are two logical drives. The first
    occupies 40% of the extended partition, the second occupies 60%.
  - aefdisk /formatfat /pri:2000:83 /ext:0 /rel /log:100
    Create a 2GB Linux partition, and then create an extended
    partition with one logical drive in the remaining free space,
    which is calculated automatically. The logical drive will be
  - aefdisk 3 /notdel:1,6,83 /mbr /hidefat
    Deletes all partitions except the specified ones (FAT12, BIGDOS
    and Linux), install the loader code in the MBR, then hide all
    primary FAT partitions on the third harddisk.
  - aefdisk * /hident
    Hides all primary NTFS/HPFS partitions on all available harddisks.
  - aefdisk /changetype:6:1 /reboot
    Change the type ID of the 1st partition to BIGDOS then reboot.
    This is useful if - let's say - the first partition is a Compaq
    diagnostic partition and we're corious about its contents.

See also:


  Copyright © 1997 - 2015 Nagy Daniel, help version 2023
  W. Spiegl.

  This file is derived from the FreeDOS Spec Command HOWTO.
  See the file H2Cpying for copying conditions.