The following has be reported by IBM LTC:  
RC1 dated 1004 doesn't recognize existing Linux DASDHardware Environment: z/990

Software Environment: RHEL-3 RC1


Steps to Reproduce:
1. install on image with existing DASD
2.
3.

Actual Results:

Installer doesn't recognize existing Linux DASD. Reports it can not read the
partition table. We are forced to let the installer format all DASD. If we don't
it reports no devices availble for install. This is not acceptable for images
with existing DASD that is not required for the installation. 

BTW this DASD was used by an existing RHEL 3 RC 1 image which had just been halted. 

During the format the screen is flooded with the following message: 
dasd: /dev/dasdb  ( 94:  4),0201@07: dasd_format: device is open! expect errors.

After the format is done we got:
 
 Exception Occurred
├──────────────┐
             │                                                 │
             │ An unhandled exception has occurred.  This    # │
             │ is most likely a bug.  Please copy the full   ▒ │
             │ text of this exception and file a detailed    ▒ │
             │ bug report against anaconda at                ▒ │
             │ http://bugzilla.redhat.com/bugzilla/          ▒ │
             │                                               ▒ │
             │ Traceback (most recent call last):            ▒ │
             │   File "/usr/bin/anaconda", line 1081, in ?   ▒ │
             │     intf.run(id, dispatch, configFileData)    ▒ │
             │   File "/usr/lib/anaconda/text.py", line      ▒ │
             │ 471, in run                                   ▒ │
             │     dispatch.gotoNext()      

dasd: waiting for responses...                                                  
dasd(eckd): /dev/dasdb  ( 94:  4),0201@07: (4kB blks): 2381760kB at 48kB/trk com
patible disk layout                                                             
 dasdb:(nonl)/        : dasdb1                                                  
dasd: /dev/dasdb  ( 94:  4),0201@07: BLKRRPART: device is open! expect errors.  
 dasdb:VOL1/  0X0201:                                                           
                  
The installer termintes. 
                                                             
                                                                                
Expected Results:

Additional Information: Note: This only happens with mod 3 DASD or small vm
disks. It does not NOT happen with mod-9s pre existing LVM or RAID.