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SCSI hard disk question...

daemon@ATHENA.MIT.EDU (Youjip Won)
Sun Dec 28 20:52:17 1997

From: Youjip Won <yjwon@cs.umn.edu>
To: linux-scsi@vger.rutgers.edu
Date: 	Sun, 28 Dec 1997 19:47:46 -0600 (CST)

Dear Linux gurus,
   I have difficulty in feeding the correct geometry information to 
   LILO.
 
   I have a system w/
	- Seagate Barracuda 4XL( formatted capacity: 4.55 GB)
  	- adaptec 7880W SCSI adapter(driver = aic7xxx)

   This is linux only system. 
   Without geometry information, LILO hang forever after spitting "LI".
   So, I explicitly specify the disk geometry information in /etc/lilo.conf
   as follows.
      
      disk = /dev/sda
         sectors = 63
         heads = 255
         cylinder = 512

   sectors and heads values are found at 
   http://www.linuxnow.com/gotdocs?large-disk website. 
   cylinder number has been chosen such that total size of the disk
   does not exceed the actual capacity of the disk(4.55GB).

   With this settings, it passes the LILO successfully. However, it fails to 
   mount the root file system generating following message.

      Partition check:
      cannot open root device 08:01
      Kernel Panic:VFS: Unable to mount root fs on 08:01
 
   LUN of SCSI disk is 8 and root file system resides at /dev/sda1.
   'linear' option generates the same error message.

   Seen through fdisk, the disk has 64 heads, 32 sector, and 4340 cyl.

   It would be greatly appreciated if I could share the details with
   you.
   Thanks.!!!

Youjip
-- 
Youjip Won	                  Office: 612.625.6597               
http://www.cs.umn.edu/~yjwon      Fax:    612.625.0572

      "Today is the first day of the rest of your life"
         : The ultimate Markov assumption

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