[mdlug] Mounting problems

[Joe Doehler]

I am trying to migrate to my new box that runs Fedora 10. My old box 
runs an older version of RedHat. One hard drive, with two ext3 
partitions, works fine in the old box. When installed in the Fedora 
10 box, I cannot mount these partitions, either as ext3 or ext2:

# mount -t ext2 /dev/sdb1 /test
mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
        missing codepage or helper program, or other error
        In some cases useful info is found in syslog - try
        dmesg | tail  or so

# dmesg | tail
<snip>
EXT2-fs: sdb1: couldn't mount because of unsupported optional features (4).
sd 2:0:0:0: [sdb] 4001760 512-byte hardware sectors (2049 MB)
sd 2:0:0:0: [sdb] Write Protect is off
sd 2:0:0:0: [sdb] Mode Sense: 00 3a 00 00
sd 2:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't 
support DPO or FUA
sdb: sdb1 sdb2

Googling for "unsupported optional features (4)" indicates that I am 
not the only one faced with this annoyance, but resolution escapes 
me, as it does with others.

Yes, the drive is configured properly. fdisk sees what is expected. I 
can use my network to move my stuff, but I would like to know what is going on.

Joe.