What the heck is a "magic number"?

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1 total messages Started by J. G. Gregory Wed, 02 Sep 1992 13:42

#904

Author: J. G. Gregory
Date: Wed, 02 Sep 1992 13:42

37 lines
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I have reported this problem to the beta bug mailing list, but other than an  
acknowledgement, I received no reply.  Now that 3.0 is out, (but I don't yet  
have it), I need some net advice on what to do.  I absolutely have to get some  
floppies made.

I insert a brand new Toshiba PMF-2ED "4mb" floppy into my PLI SuperFloppy 2.88  
SCSI drive.  It correctly reports that it is unreadable, and I select  
"initialize".

According to the console, the formatting works ok, but when newfs is run, it  
reports this:

...
creating new filesystem on /dev/rsd1a
/usr/etc/newfs -n -v /dev/rsd1a
setting optimization for space with minfree less than 10
/etc/mkfs /dev/rsd1a 2784 18 2 8192 1024 16 0 5 2048 s
Warning: 24 sector(s) in last cylinder unallocated
/dev/rsd1a:	2784 sectors in 78 cylinders of 2 tracks, 18 sectors
	2.9Mb in 5 cyl groups (16 c/g, 0.59Mb/g, 192 i/g)
super-block backups (for fsck -b#) at:
 16, 616, 1168, 1768, 2320,
cg 0: bad magic number
/usr/etc/newfs /dev/rsd1a failed (status 1)

This "cg 0: bad magic number" is a problem.  I have tried doing all most of the  
initializing manually, but I always get a "bad magic number" report before  
failure.  Now I have 3 questions:

1. Has anyone else had this problem on 3.0PR2 (or PR1)?

2. Is there anything else I can try?

3. What the hell is the magic number, anyway?

Thanks in advance.
--J Gregory

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