https://qa.mandrakesoft.com/show_bug.cgi?id=480
Product: hdparm
Component: hdparm
Summary: hdparm reports error reading parameters about cdrom
device on mandrake-9.0
Version: 5.2-1mdk
Platform: Other
OS/Version: All
Status: RESOLVED
Severity: normal
Priority: P2
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
I have an ATAPI cdrom attached to /dev/hdc . The drive is working fine.
However, "hdparm /dev/hdc" gives this output containing error messages:
/dev/hdc:
HDIO_GET_MULTCOUNT failed: Invalid argument
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 1 (on)
readahead = 8 (on)
HDIO_GETGEO failed: Invalid argument
In case its relevant:
- the cd drive is using the usual ide-cd kernel module
- supermount is enabled
I have noted this behavior irrespective of whether:
- dma is enabled or disabled
- scsi-emulation is enabled or disabled
On another machine running mandrake-9.0 with a cdrw drive having
scsi-emulation, there is an additional error message about "BLKRAGET":
/dev/hdc:
HDIO_GET_MULTCOUNT failed: Input/output error
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
BLKRAGET failed: Input/output error
HDIO_GETGEO failed: Invalid argument
------- Additional Comments From [EMAIL PROTECTED] 2002-12-04 09:30 -------
unlinke hard disks (which are segmented in cylinders, tracks and sectors), cdrom
devices do not have a geometry, hance the ioctl faillure.
This is just a warning telling you hdparm cannot get the ata unit geometry which
is fine with cdrom since they have not one (they do have one spirale track
segmented in sectors which length vary with burning mode but not what ata/eide
expects to be a geometry).
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