Hi,
this is tested on Fedora 20
util-linux.i686 2.24.2-1.fc20 @update
# mount -t auto /dev/sr0 /media/
mount: /dev/sr0 is write-protected, mounting read-only
mount: /dev/sr0: can't read superblock
#
# dmesg -T
[Mon Sep 1 17:35:40 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:35:40 2014] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Mon Sep 1 17:35:40 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:35:40 2014] Sense Key : Illegal Request [current]
[Mon Sep 1 17:35:40 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:35:40 2014] Add. Sense: Logical block address out of range
[Mon Sep 1 17:35:40 2014] sr 0:0:1:0: [sr0] CDB:
[Mon Sep 1 17:35:40 2014] Read(10): 28 00 00 00 00 00 00 00 01 00
[Mon Sep 1 17:35:40 2014] end_request: I/O error, dev sr0, sector 0
[Mon Sep 1 17:35:40 2014] Buffer I/O error on device sr0, logical block 0
[Mon Sep 1 17:35:40 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:35:40 2014] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
...
[Mon Sep 1 17:35:43 2014] sr 0:0:1:0: [sr0] CDB:
[Mon Sep 1 17:35:43 2014] Read(10): 28 00 00 00 00 00 00 00 01 00
[Mon Sep 1 17:35:43 2014] FAT-fs (sr0): unable to read boot sector
#
What is the last line about ??? FAT-fs on sr0 ???
# mount -t iso9660 /dev/sr0 /media/
mount: /dev/sr0 is write-protected, mounting read-only
mount: wrong fs type, bad option, bad superblock on /dev/sr0,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
#
# dmesg -T
...
[Mon Sep 1 17:55:15 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:55:15 2014] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[Mon Sep 1 17:55:15 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:55:15 2014] Sense Key : Illegal Request [current]
[Mon Sep 1 17:55:15 2014] sr 0:0:1:0: [sr0]
[Mon Sep 1 17:55:15 2014] Add. Sense: Logical block address out of range
[Mon Sep 1 17:55:15 2014] sr 0:0:1:0: [sr0] CDB:
[Mon Sep 1 17:55:15 2014] Read(10): 28 00 00 00 00 10 00 00 01 00
[Mon Sep 1 17:55:15 2014] blk_update_request: 59 callbacks suppressed
[Mon Sep 1 17:55:15 2014] end_request: I/O error, dev sr0, sector 64
[Mon Sep 1 17:55:15 2014] isofs_fill_super: bread failed, dev=sr0,
iso_blknum=16, block=16
#
I see this problem historically present in many distros.
# isoinfo -d -i test.iso
CD-ROM is in ISO 9660 format
System id: LINUX
Volume id: CDROM
Volume set id:
Publisher id:
Data preparer id:
Application id: GENISOIMAGE ISO 9660/HFS FILESYSTEM CREATOR (C) 1993
E.YOUNGDALE (C) 1997-2006 J.PEARSON/J.SCHILLING (C) 2006-2007 CDRKIT TEAM
Copyright File id:
Abstract File id:
Bibliographic File id:
Volume set size is: 1
Volume set sequence number is: 1
Logical block size is: 2048
Volume size is: 183
Joliet with UCS level 3 found
Rock Ridge signatures version 1 found
#
# isoinfo -l -i test.iso
Directory listing of /
d--------- 0 0 0 2048 Sep 1 2014 [ 28 02] .
d--------- 0 0 0 2048 Sep 1 2014 [ 28 02] ..
---------- 0 0 0 121 Sep 1 2014 [ 31 00]
DISK_WAR.TXT;1
---------- 0 0 0 144 Sep 1 2014 [ 32 00]
HDPARM_T.OUT;1
#
jb
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