jritts-g / psubst

Automatically exported from code.google.com/p/psubst

Persistent SUBST command

Works the same way as command.com´s native SUBST command, but in a reboot-persistent manner.

Purpose

Command.com´s native SUBST command is a great tool, but every drive mapping get´s erased when windows reboots. PSubst creates reboot-persistent virtual drive mappings.

To do this, PSubst requires administrative rights, so there is an in-built elevation function that is called when needed.

Usage

Run psubst.bat /? for usage instructions. Note: arguments can be specified in any order.

When can this be used?

• Temporary subst when the physical drive is missing;
• Mapping Network drives
• Bypass Windows limitation for the size of filepath (256 characters);
• Working of some application within own space;
• Emulation of other operational systems.
• Personal files organization

Related links

• Original PSUBST home
• SUBST home
• Persistent subst for NT-clones (by Alexander Telyatnikov)
• C++ coded PSUBST (by Alexander Telyatnikov)
• Overview of file systems FAT, HPFS and NTFS (Microsoft knowledge base page in Russian)
• How NTFS Works