File Share Encryption

When attempting to recover from a windows issue,  I have my PGP Passphrase.  I am trying to use the recovery ISO to decrypt the disk, but after searching for the PGPWDE Installation I get the following error:

could not recognise PGPWDE installation on the disk, unable to continue.

I am using PGP Whole Disk Encryption 10.2.1 (Build 4940) and iso: PGPDesktop10.2.1MP3Win32_WDE_Recovery.iso

Which I think are the correct iso but as I can't access the drive due to Windows I can't use the version in the PGP folder.  So I need to decrypt the disk.

Any direction would be really helpful.  Thanks

Before decrypting the drive if you don't have a backup I would try as a first approach Slaving the drive to another machine with PGP installed and backup all of your data. Using boot ISO should be really last case scenario.Then as a second approach while having the drive Slaved and data backed up I would try to decrypt the drive from the command line following below KB:

 PGP Whole Disk Encryption Command Line User's Guide
http://www.symantec.com/docs/DOC3604

Using the PGP Whole Disk Encryption Admin Passphrase User
http://www.symantec.com/docs/HOWTO77033

Win x32:
C:\Program Files\PGP Corporation\PGP Desktop>

Winx64:
C:\Program Files x86\PGP Corporation\PGP Desktop>

pgpwde --decrypt --passphrase <passphrase> --disk X

and /or

pgpwde --decrypt --disk X --aa --passphrase “WDE Admin Passphrase here”

diskX - (if you slave the drive --disk 1 most probably will be your second drive)

HTH