🚀 go-pugleaf

Dear All, I use a DecStation 5000, running Ultrix 4.1. I have been trying
to install a new SCSI disk, a Micropolis 1528 with the following specs:

1531.1 Mbytes (1342.3 Mbytes when formatted)
8 disk platters
15 r/w heads
2100 cylinders
512 bytes/sector
84 sectors/track.

I went through the MAKEDEV & formatting procedures (using 
rzdisk -f known /dev/rrz1c).
Since I want 2 large partitions I have made the partitiion 
table as follows:

# chpt -q /dev/rrz1a
/dev/rrz1a
Current partition table:
partition     bottom        top       size    overlap
    a              0      32767      32768    c,d,e,f
    b          32768      65535      32768    c
    c              0    2621687    2621688    a,b,d,e,f,g,h
    d              0          0          0    a,c,e,f
    e              0          0          0    a,c,d,f
    f              0          0          0    a,c,d,e
    g          65536    1335535    1270000    c
    h        1335536    2605535    1270000    c

so that I have a small "a", small "b" and large g & h partitiions.

Since I do not know what type of disk this is, I made up an entry which I call
rz58, using the specs that came with the disk literature. Following is what I 
have put into the /etc/disktab file:

rz58|RZ58| Micropolis 1.2GB Winchester:\
        :ty=winchester:ns#84:nt#15:nc#2100:\
        :pa#32768:ba#8192:fa#1024:\
        :pb#32768:bb#4096:fb#1024:\
        :pc#2621688:bc#8192:fc#1024:\
        :pd#0:bd#8192:fd#1024:\
        :pe#0:be#8192:fe#1024:\
        :pf#0:bf#8192:ff#1024:\
        :pg#1270000:bg#8192:fg#1024:\
        :ph#1270000:bh#8192:fh#1024:

and then ran newfs to make new file systems with 
newfs -vn /dev/rrz1a rz58
I had to run newfs on the "a" partition, and also ran it on "g" & "h", but did
not do it for "b".

The problem comes when I try to run fsck. If I make a file system on g and then 
run fsck /dev/rz1g, there is no problem. Hoeever as soon as make the file 
system on "h", an fsck on g gives errors. An fsck on h is OK though. If I again 
run newfs on g, then g becomes OK but h gives errors. 
	I am not sure whether the problem is with the disk, or whether fsck
just cannot handle such large disks or what!. Has anyone had experience, good 
or bad with these disks? Regards, S.Tonse.