Category : Utilities for DOS and Windows Machines
Archive   : XPANDISK.ZIP

Output of file : XPANDISK.DOC contained in archive : XPANDISK.ZIP

Device Driver and Command

Michael J. Mefford
1988 No. 18 (Utilities)

Purpose: Permits varying the amount of expanded memory allocated to
a RAM disk without rebooting, when used on systems equipped with memory
that conforms to the Lotus/Intel/Microsoft specification.

Format: In CONFIG.SYS file:

DEVICE=XPANDISK.SYS [/Dn][/Sn][/En][/Mn][/An]

At DOS command prompt:

XPANBOSS [d:][/Dn][/Sn][/En][/Wn][/Rn][/Mn][/An]

Remarks: XPANDISK makes use of an Expanded Memory Manager. The
DEVICE=XPANDISK.SYS entry must, therefore, follow the DEVICE=EMM.SYS
(driver name will differ with manufacturer) line already in the
CONFIG.SYS file. XPANBOSS varies the parameters of the RAMdisk d:
created by XPANDISK. Note that while this does not require rebooting,
changing parameters other than /R (Read-Only) does reformat d:, whose
contents are thereby lost. A confirmation warning is given to allow
saving the RAMdisk files before the reformatting. The optional switch
parameters for XPANDISK.SYS and XPANBOSS.COM are as follows:

/Dn Disk size, variable from 16K to 32,768K; default 64K.
/Sn Sector size, 128, 256, or 512 bytes; default 265 bytes.
/En Number of RAMdisk root directory entries; default 64.
/Mn Minimizes RAMdisk size (to 16K); use when running
large spreadsheets or databases.
/An Expands RAMdisk to fill all extended memory.
/Wn Eliminates warning that changing RAMdisk
parameters loses contents; use in batch file operation.
/Rn Make RAMdisk read-only; use after loading possible
Trojan horse programs. RAMdisk d: may be returned
to read-write by entering d:XPANBOSS.

Note: DOS assigns the next available drive letter as d:. Be sure
that this does not cause a conflict if you are using a SUBST drive.

Note: XPANDISK and XPANBOSS allow the same parameter comments
permitted by the VDISK.SYS extended/conventional device driver. Thus,
for example, you could enter

DEVICE=XPANDISK.SYS /disk size=120K /sector=128

and DOS would understand this as


  3 Responses to “Category : Utilities for DOS and Windows Machines
Archive   : XPANDISK.ZIP

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: