Category : Tutorials + Patches
Archive   : STAC0694.ZIP
Filename : 2701.TXT

-----------------------------------------------------------------
STACKER NOTE STACKER NOTE
WRITE-PROTECTED STACKER DRIVES
(Applies to All Stacker Versions)
STAC FAX 2701 (05-10-1994)
-----------------------------------------------------------------

BACKGROUND

Problems with compressed data can result from errors in the DOS
file system or defects in the hard disk media itself. Stacker
pauses the normal startup of your computer when it detects a
problem that warrants your immediate attention:

D: = C:STACVOL.DSK UPDATING STACKER ALLOCATION MAP...error
(run CHECK /F) (Write protected)
Press any key to continue...

NOTE: The Stacker utility CHECK is referenced throughout this
document. If you use a version of Stacker prior to 3.0, use
SCHECK instead of CHECK.

SOLUTION

- Observe the write-protect error at start up
- Run CHECK /F
- Dealing with damaged files

OBSERVE THE WRITE-PROTECT ERROR AT START UP

If Stacker tells you to run CHECK /F, then skip to the next
section for details. Otherwise, check the table below for other
types of write-protect situations.

WRITE-PROTECT MESSAGE SOLUTION
Size mismatch - Write protected (existing
installation) StacFax # 31704.(ver < 4.0)
StacFax # 4702 (ver 4.0)
Reboot during SDEFRAG detected - write protected
StacFax # 31707. (ver < 4.0)
StacFax # 4704 (ver 4.0)
Mount ID write error StacFax # 3703.

RUN CHECK /F

1. Press any key to clear the write-protect message and to
continue booting. CHECK should start up automatically from
the AUTOEXEC.BAT file.
2. If CHECK does not start automatically, then exit any
programs that do start automatically such as Windows or a
menu program. Then, to fix Stacker drive C for example,
from a DOS prompt, type:
CHECK C: /F
3. When CHECK prompts you to repair the drive, type yes and
press .
NOTE: If CHECK reports IOCTL ACCESS DENIED ERROR #27, see
StacFax #3702 (ver < 4.0) or StacFax #4706 (ver 4.0).

DEALING WITH DAMAGED FILES

If CHECK reports damaged files, it will prompt you to "delete the
damaged files listed above so that all the errors may be
corrected?" Read through both options before you decide whether
to respond yes or no.

"YES" -- ALLOWING CHECK TO DELETE DAMAGED FILES
If you already have a backup of the damaged files, or if the
damaged files are unimportant, type yes and press . CHECK
will then delete the damaged files and remove the write
protection.

If CHECK reports errors "which should be repaired with CHKDSK or
a disk repair utility," then run a multipurpose disk repair
utility such as Norton Disk Doctor or PC Tools DiskFix on the
Stacker drive. If you have no disk repair utility, run CHKDSK
instead. After cleaning up the errors, you can restore backup
copies of the damaged files if necessary.

"NO" -- RECOVERING DAMAGED FILES MANUALLY
Depending on the type and extent of the corruption, some damaged
files can be partially or completely recovered manually. To
attempt manual recovery, type no and press . CHECK will
correct other errors while leaving the damaged files intact. It
will then remove the write protection and tell you to copy the
files with errors to another disk.

Copy the damaged files to a different drive. If a file is
damaged beyond repair, you will get the error: "Read fault error
reading drive; Abort, Retry, Ignore, Fail?" Abort out of any
read faults - you will have to recreate such files or restore
backup copies.

If you get the message "1 file(s) copied," it indicates that DOS
was able to copy something of the original file. After
attempting to recover the files you need, repeat the instructions
for running CHECK /F and allow it to delete the damaged files.

-----------------------------------------------------------------
Copyright 1994 Stac Electronics