Description of Problem:
I can't install the RH7.2 distro from the CDROM. I have an Adaptec 2930 CU 
SCSI PCI Adapter with 2 attached drives, a YAMAHA cdwriter and a PIONEER 
dvdrom.
The install hangs loading the aic7xxx module.
I tried without success the noprobe boot option then manualy selecting the 
regular aic7xxx module and even the experimental aic7xxx_mod module.
I also tried the apic boot option, said to work for some people experiencing 
aic7xxx problems during install. Didn't work either.
I decided to make a custom RH7.2 install floppy disk using the latest revision 
of the aic7xxx module (6.2.4).
This is the one I use on my RH7.0 linux box with a custom 2.4.17 kernel. It 
works fine.
So I patched the kernel 2.4.7 kernel (RH7.2) with the aic7xxx rev 6.2.4 code.
I had to replace vmlinuz in the boot.img and files aic7xxx.o, scsi_mod.o, 
sd_mod.o and sr_mod.o in the module.cgz file stored in the initrd.img .
Result: the scsi driver is loaded correctly but the install fails to find my 
Redhat CDROM.
Here is an excerpt of the messages printed on the consoles #3 and #4.

console #3:
* found suggestion of aic7xxx
* found aic7xxx device
* found suggestion of usb-ohci
* found devices justProbe is 0
* going to insmod aic7xxx.o (path is NULL)
* trying to mount device scd0
* loopfd is 7
* failed to mount loop: No such device
* trying to mount device scd1

console #4:
<6> loop: loaded (max 8 devices)
.
.
.
<6> SCSI subsystem driver Revision : 1.00
<6> PCI : Found IRQ 11 for device 00:08.0
<6> scsi0: Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.4
<4>        <Adaptec-2930CU SCSI adapter>
<4>        aic7860 : Ultra Single Channel A, SCSI Id=7, 3/253 SCBs
<4>
<4> Vendor: YAMAHA Model: CRW8824S Rev:1.00
<4> Type:   CD-ROM                 ANSI SCSI revision: 02
<4> (scsi0.A:0) 20.000MB/s transfers (20.000MHz, offset 15)
<4> Vendor: PIONEER Model: DVD-ROM DVD-305 Rev:1.03
<4> Type:   CD-ROM                 ANSI SCSI Revision: 02
<4> (scsi1:A:1) 20.000MB/s transfers (20.000MHz, offset 15)
<4> Attached SCSI CD-ROM sr0 at SCSI 0, channel 0, id 0, lun 0
<4> Attached SCSI CD-ROM sr1 at SCSI 0, channel 0, id 1, lun 0
<4> sr0: scsi3-mmc drive: 24x/24x writer cd/rw xa/form2 cdda tray
<6> Uniform CD-ROM driver Revision: 3.12
<4> sr1: scsi3-mmc drive: 16x/40x cd/rw xa/form2 cdda tray
<7> VFS: Disk change detected on device sr(11,0)
<7> ISO 9660 Extensions : Microsoft Joliet Level 3
<7> ISO 9660 Extensions : RRIP_1991A
<4> Unable to identify CD-ROM format
<4> sr1: CD-ROM not ready. Make sure there is a disc in the drive.
<6> cdrom: open failed
<7> VFS: Disk change detected on device sr(11,1)

I got the messages above with the RH7.2 install CD #1 in my cdwriter (SCSI 
id=0). I checked it neither worked with the CD in my dvdrom.

I also tried to make a install floppy disk with a 2.4.17 kernel. I got exactly 
the same result. Install reports "I could not find a RedHat linux CDROM in any 
of your CDROM drives. Please insert the RedHat CD and press OK to retry."

Among other things, I wonder why I get the message "failed to mount loop: No 
such device" as long as I also get the message "<6> loop: loaded (max 8 
devices).

Well, I might leave out an important feature in the kernel configuration. 
Could anyone help me ?

Thanks in advance.

Pierre-Hugues Oger


Version-Release number of selected component (if applicable): RH7.2 Install


How Reproducible: Always


Steps to Reproduce:
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Actual Results:


Expected Results:


Additional Information: