Mitsumi 4X IDE CD-ROM compatibility

Mitsumi 4X IDE CD-ROM compatibility

Post by Chris Hamilt » Sat, 21 Jan 1995 01:52:08



I have a Mitsumi 4x CD-ROM (IDE interface) in a Gateway P590,
and I'm having some trouble getting the Linux ramdisk kernel
to recognize the CD-ROM during installation.  Is this CD-ROM
not supported?  Or do I need to explicitly mount it?  If I
need to mount it, what command line would do the trick?

--
------------------------------------------------------
Chris (Cham) Hamilton            
BDM Engineering Services Co

------------------------------------------------------

 
 
 

Mitsumi 4X IDE CD-ROM compatibility

Post by Peter Herweij » Sat, 21 Jan 1995 20:48:58


 >I have a Mitsumi 4x CD-ROM (IDE interface) in a Gateway P590,
 >and I'm having some trouble getting the Linux ramdisk kernel
 >to recognize the CD-ROM during installation.

Hm, *what* kernel do you mean exactly? The current Linux kernel (1.1.83
or thereabouts) will probably handle your CDROM just fine, but things
like one of the Slackware bootdisks still haven't been updated with a
recent ATAPI-aware kernel.

 >Is this CD-ROM not supported?

Supported by what? See above.

 >Or do I need to explicitly mount it?

Once you get it recognized (it should be displayed as something like
hdb: [...] ATAPI CD-ROM [...] during bootup) _and_ the correct devices
exist in /dev/ (especially if the CD is on the secondary interface)
you can mount it using something like

  mount /dev/hdb /cdrom -t iso9660 -o ro

(and don't blame me if this is slightly off).

If it is not recognized, ask whoever makes your distribution for a
suitable bootdisk.

 - Peter Herweijer


 
 
 

Mitsumi 4X IDE CD-ROM compatibility

Post by Chris Hamilt » Tue, 24 Jan 1995 20:24:17




> >I have a Mitsumi 4x CD-ROM (IDE interface) in a Gateway P590,
> >and I'm having some trouble getting the Linux ramdisk kernel
> >to recognize the CD-ROM during installation.

>Hm, *what* kernel do you mean exactly? The current Linux kernel (1.1.83
>or thereabouts) will probably handle your CDROM just fine, but things
>like one of the Slackware bootdisks still haven't been updated with a
>recent ATAPI-aware kernel.

Yup, that appears to be the problem.  I finally installed by brute force--
copied the slackware distribution from my CD-ROM to my hard drive, then
installed from there.  Now I'll try to compile a new kernel (1.1.83?) that
will recognize IDE CD-ROMs.

I have developed another problem, though.  During installation, I chose to
install LILO to the MBR on my hard drive.  However, when I boot up, I
never see the LILO prompt--it goes straight into DOS, just like I never
changed the MBR.  The partition table DOES show the linux partitions.  For
the time being, I am forced to boot linux off of a floppy disk, which is
puzzling.

Also, I have two IDE hard drives (both Western Digital: 1Gb and 210Mb) in
my system.  The BIOS recognizes both, DOS can use both, but Linux can
only "see" the 1Gb, which is where I installed Linux (by default).  Where
is my other drive?  I even disconnected my IDE CD-ROM completely, on the
assumption that it was the culprit; but no change.  Any suggestions?

I have had serious problems with my IDE drives to date.  When I ran Norton's
Disk Doctor on my 1Gb, it screwed up and insisted there was some mystery
partition out there that nobody knew about--then it made the hard drive
produce an unnerving clanking sound, like the heads were sweeping out from
cylinder 0 to cylinder 2100 and back at regular intervals.  I hit ESC, and
it quits.  No other programs cause the problem, and nothing else *appears*
to be wrong.  Except: I can't restore the partition table from a saved
image on floppy using Norton's Disk Tool.  I get an "Error writing partition
table".  Very scary.  Could this be a BIOS incompatibility?  Or perhaps
a bad spot on the disk in sector 0?  I'm puzzled and concerned, to say
the least.   Any suggestions would be appreciated.

--
------------------------------------------------------
Chris (Cham) Hamilton            
BDM Engineering Services Co

------------------------------------------------------

 
 
 

1. Toshiba 4x v. Mitsumi 4x CD-ROM

Here are the statistics I have compiled:

                Toshiba                         Mitsumi
Buffer          256k                            128k + 128k virtual
DTR Mode 1      600 kb/sec                      600 kb/sec
DTR Mode 2      684 kb/sec                      684 kb/sec
Access
 Random         150 ms                          
 4 Stroke                                       400 ms
 3 Stroke                                       230 ms
 MTBF                                           15,000

I can get either for $218.  Now, which one should I get?  Does the buffer
make that much difference?  Problems or compatibility problems?  Will
Linux have a problem with either?  Which is ACTUALLY faster?

I need to get a CD-ROM ASAP, and have about $200 to spend... and Quad
speed... either IDE or SCSI.  All information would be appreciated.

Thanks.

__________________________________________________________________________

Computer Engineering              | UL+>++++$ P+>++ L++>++++ E- W++ N+++


                                  | D+(++) G++ e++>++++ h--- r+++ y+++(*)

2. Sun Completes Design Tape-Out for Next-Generation, Breakthrough UltraSPARC T2 CoolThreads Processor

3. 1.1.81 and Mitsumi 4X IDE (ATAPI) CD-ROM problems

4. IP Problem!

5. 4x IDE Mitsumi CD-Rom and Slack 3.0

6. Matrox, Nine, others...

7. X86 2.5 Install and Mitsumi IDE 4X CD-ROMS

8. two nice features that I would like for SunOS

9. Mitsumi IDE 4x cd rom install problem

10. 4 ide drives & Mitsumi (IDE/ATAPI) CD-ROM via SB

11. UNRECOGNIZED 4X MITSUMI CD-ROM DURING SETUP

12. Acer vs. Mitsumi 4X CD-ROM, which to buy?

13. Problems with Mitsumi 4x CD-ROM