Dear "List",
I follow this list for a while and appreciate its interest. I have
now a question that could be addressed here I think.
I run Debian (1.1) Linux (kernel 2.0.25) on a Pentium with 48 MB Ram,
an Adaptec
2940 SCSI card that is fully recongnized, a Micropolis SCSI hard disk
2.0 GB that works fine under DOS, Windows NT and Linux and a magneto
optical device SONY RMO-S594 that allows to read/write removable media
of 2.4 Gb in total (1.2 GB by face).
The problem come with the RMO-S594 on linux (It works with Windows NT
3.51
on the same machine but I want to be able to run ONLY Linux ...).
The device is - seen by the machine at boot time, (see below)
- seen by the linux kernel at boot time and identified
as /dev/sdb but cannot be used, neither formatted nor mounted.
To be more precise:
1) fdisk does see the device and can partition it.
For example, fdisk gives
Disk /dev/sdb: 255 heads, 63 sectors, 158 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Begin Start End Blocks Id System
/dev/sdb1 1 1 158 1269103+ 83 Linux native
2) I cannot make a filesystem on it.
When I try "mkfs -t ext2 /dev/sdb1"
After a successfull creation of the inodes (up to 155 and not 158 !)
I get
ext2fs_mkdir: Attempt to read block from filesystem resulted in short read
while creating root dir
and the program exits. What does happen ?
3) Whereas I can format a HD under dos/Windows NT in Vfat, and mount if under
Linux, I cannot do this with the RMO. There is apparently a problem
with the partition too.
For example a single partition created on the RMO with WindowsNT
give (with fdisk)
Disk /dev/sdb: 255 heads, 63 sectors, 158 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Begin Start End Blocks Id System
/dev/sdb1 1 1 80 635888 6 DOS 16-bit >=32M
Partition 1 has different physical/logical beginnings (non-Linux?):
phys=(0, 1, 1) logical=(0, 0, 33)
Partition 1 has different physical/logical endings:
phys=(620, 63, 32) logical=(79, 42, 27)
Partition 1 does not end on cylinder boundary:
phys=(620, 63, 32) should be (620, 254, 63)
How come ? How to mount such a partition ?
If you have any hint, like: what do I need to do to use the RMO
device with Linux, it would be most welcome ? Where ask the question ... ?
Thanks,
Nicolas Pettiaux
---- extract for the boot log -----
aic7xxx: Target 5, channel A, now synchronous at 5.0MHz, offset(0xf).
Vendor: SONY Model: SMO-F541+3 Rev: 1.09
Type: Optical Device ANSI SCSI revision: 02
Detected scsi disk sdb at scsi0, channel 0, id 5, lun 0
scsi : detected 2 SCSI disks total.
SCSI device sda: hdwr sector= 512 bytes. Sectors= 4004219 [1955 MB] [2.0 GB]
SCSI device sdb: hdwr sector= 1024 bytes. Sectors= 1273011 [1243 MB] [1.2 GB]
sdb: Write Protect is off
--
=========================================================================
| Nicolas Pettiaux, PhD Laboratoire de physique biomedicale, CP 613/3 |
| ULB, Campus Erasme Route de Lennik 808, B-1070 Brussels, Belgium |
| Tel: +32.2.555.61.35, Fax: +32.2.555.61.62, Email: [EMAIL PROTECTED] |
=========================================================================
=========================================================================
| Nicolas Pettiaux, PhD Laboratoire de physique biomedicale, CP 613/3 |
| ULB, Campus Erasme Route de Lennik 808, B-1070 Brussels, Belgium |
| Tel: +32.2.555.61.35, Fax: +32.2.555.61.62, Email: [EMAIL PROTECTED] |
=========================================================================
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