Unmount DriveSpace3 drive in real-mode

[dilettante]

Here's another odd one.

I need to unmount a previously mounted DriveSpace3 drive, but in real-mode, not while Windows is running.

I know about the (semi-documented) SCANDISK /MOUNT X: syntax, but I am looking for a way to reverse the process.

Anyone remember much about this hoary old topic of compressed drive technology under 9x?

 

[Blujacket]

You might read some of the entries at

http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=unmount+drivespace.

 

[dilettante]

Thanks, but I'cve seen those links already.

They deal with either UNMOUNTs under Win95, or UNMOUNTs under DOS 6.2 or 6.22

What I need is something like DOS 6.22's DRVSPACE.EXE I suppose (which supports an /UNMOUNT switch, unlike Win95's), but that can work with Win95's CVFs. Or maybe I'm missing the point and I could just use 6.22's copied as DRVSP622.EXE and get away with it?

 

[Blujacket]

This is from the MS-DOS 6.22 Help file:
"DRVSPACE /UNMOUNT
Breaks the connection between the selected drive's compressed volume file and its drive letter. Unmounting a drive makes it temporarily unavailable.

You cannot unmount drive C.

Syntax

DRVSPACE /UNMOUNT [drive:]

Parameter drive:
Specifies the drive you want to unmount. This parameter is optional; if you omit it, DriveSpace unmounts the current drive.

Switch

/UNMOUNT
Unmounts the specified compressed drive."

[Just an information note, FAT32 partitions can't be compressed by anything that Microsoft offers.]

A boot floppy contains the file drvspace.bin [hidden]. The drvspace command itself is an internal command built into the boot files. Be sure to use a boot disk for your version of the OS.

 

[dilettante]

Thanks Blujacket,

Been there, done that. No soap. Win95's DRVSPACE.EXE "Requires Windows" - it's a GUI application.

Essentially my question boils down to:

Can I UNMOUNT a Win95 DriveSpace3 drive using DRVSPACE.EXE from DOS 6.22 while running in Win95's pure DOS mode?

If not, is there another way to do this in Win95's pure DOS mode (i.e. a 3rd party utility or a switch for some other Win95 utility)?

 

[flyboytim]

you can bypass config sys lines including drvspace.sys at startup using ctrl+F8 which will prevent Drvspace.bin loading and your compressed volume will not be mounted.

 

[dilettante]

I think I'm not being clear here.

I want the CVF to be mounted, but then later I want to unmount it, with Win95 running in between these two events.