cdrom access problem

[plener]

get not valid block device errors



/etc/fstab

/dev/cdrom /cdrom iso9660 defaults,ro,user,noexec,noauto 0 0


info from dmesg


mod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
(scsi0:A:0): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
(scsi0:A:1): 40.000MB/s transfers (20.000MHz, offset 63, 16bit)
(scsi0:A:2): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
(scsi0:A:3): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
(scsi0:A:4): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
(scsi0:A:5): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
(scsi0:A:8): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
(scsi0:A:9): 40.000MB/s transfers (20.000MHz, offset 15, 16bit)
scsi0:A:0:0: Tagged Queuing enabled. Depth 253
scsi0:A:1:0: Tagged Queuing enabled. Depth 253
scsi0:A:2:0: Tagged Queuing enabled. Depth 253
scsi0:A:3:0: Tagged Queuing enabled. Depth 253
scsi0:A:4:0: Tagged Queuing enabled. Depth 253
scsi0:A:5:0: Tagged Queuing enabled. Depth 253
scsi0:A:8:0: Tagged Queuing enabled. Depth 253
scsi0:A:9:0: Tagged Queuing enabled. Depth 253
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0
Attached scsi disk sdc at scsi0, channel 0, id 2, lun 0
Attached scsi disk sdd at scsi0, channel 0, id 3, lun 0
Attached scsi disk sde at scsi0, channel 0, id 4, lun 0
Attached scsi disk sdf at scsi0, channel 0, id 5, lun 0
Attached scsi disk sdg at scsi0, channel 0, id 8, lun 0
Attached scsi disk sdh at scsi0, channel 0, id 9, lun 0
scsi2 : SCSI host adapter emulation for IDE ATAPI devices




listing of cdrom from /dev

lrwxrwxrwx 1 root root 6 Dec 20 2005 sbpcd -> sbpcd0
brw-rw---- 1 root cdrom 25, 0 Apr 14 2001 sbpcd0
brw-rw---- 1 root cdrom 25, 1 Apr 14 2001 sbpcd1
brw-rw---- 1 root cdrom 25, 2 Apr 14 2001 sbpcd2
brw-rw---- 1 root cdrom 25, 3 Apr 14 2001 sbpcd3
brw-rw---- 1 root cdrom 11, 0 May 30 2001 scd0
brw-rw---- 1 root cdrom 11, 1 May 30 2001 scd1
brw-rw---- 1 root cdrom 11, 10 May 30 2001 scd10
brw-rw---- 1 root cdrom 11, 11 May 30 2001 scd11
brw-rw---- 1 root cdrom 11, 12 May 30 2001 scd12
brw-rw---- 1 root cdrom 11, 13 May 30 2001 scd13
brw-rw---- 1 root cdrom 11, 14 May 30 2001 scd14
brw-rw---- 1 root cdrom 11, 15 May 30 2001 scd15
brw-rw---- 1 root cdrom 11, 16 May 30 2001 scd16
brw-rw---- 1 root cdrom 11, 2 May 30 2001 scd2
brw-rw---- 1 root cdrom 11, 3 May 30 2001 scd3
brw-rw---- 1 root cdrom 11, 4 May 30 2001 scd4
brw-rw---- 1 root cdrom 11, 5 May 30 2001 scd5
brw-rw---- 1 root cdrom 11, 6 May 30 2001 scd6
brw-rw---- 1 root cdrom 11, 7 May 30 2001 scd7
brw-rw---- 1 root cdrom 11, 8 May 30 2001 scd8
brw-rw---- 1 root cdrom 11, 9 May 30 2001 scd9

any help really appreciated on this

tia

peter

[Harry Kuhman]

get not valid block device errors....
Did you check the md5 sum of the iso before before burning?
If it was good, did you try using the nodma cheat code?
Did you burn the CD at a nice safe speed like 4x, or as fast as your burner will go (and guess which one I think gets significantly better results)?

[plener]

i cannot access my cdrom

what i get example


mount /cdrom
mount /dev/cdrom /mnt/cdrom
mount dev/cdrom /mnt/peter ( my directory


all give
invalid block device

[Harry Kuhman]

Are you under the impression that any of your response in any way related to the questions I asked and suggestions I made?

[plener]

this forum is really difficult--replys get totally screwed up
i post questions and responses and i get answeres that make no sense

sorry if i am doing something wrong

peter

[Harry Kuhman]

this forum is really difficult--replys get totally screwed up
i post questions and responses and i get answeres that make no sense

sorry if i am doing something wrong

peter
I'm not sure what you are saying. Who's reply gets screwed up? If you look at the forum, is your response what you intened it to be? If not are you using the preview feature to review what you are about to post before you post? I have never seen complaints of this nature before (maybe the people having your problem have not been aboe to post?). If you do figure out what it is that is giving a problem please try to post about it.

If your response is what you intended, I see no way that it relates to the questions I asked. If the questions I asked make no sense to you then you didn't seem to ask about them in your response.

You may want to read the Downloading faq reached by the documentation link at the top of his page.

My response to your original post is still the same:

The most important is Did you check the md5 sum of the iso before before burning? There is information about md5 in the downloading faq or you can do a simple Google search.

If it was good, did you try using the nodma cheat code? Once you know that you have a good file the nodma cheat code sometimes help boot problem CD drives. It doesn't fix anything if the md5 checksum is wrong and the file is corrupted.

Did you burn the CD at a nice safe speed like 4x, or as fast as your burner will go (and guess which one I think gets significantly better results)? We've seen over and over again that burns done at high speed might work and they might not, and they might work on some systems but not others. Burning at a slow speed is important. The nodma cheat code above does not take the place of burning at a slow spped, and burning at a slow speed will not address the issue of drives that need the nodma cheat code. Sometime both are needed. And the iso always has to be good, which is confirmed by the md5.