# dmesg | grep hd ide_setup: hdc=ide-scsi hda: ST380021A, ATA DISK drive hdc: SONY CD-RW CRX175A1, ATAPI CD/DVD-ROM drive hda: attached ide-disk driver. hda: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=9729/255/63 ide0: BM-DMA at 0xff00-0xff07, BIOS settings: hda:DMA, hdb:DMA ide1: BM-DMA at 0xff08-0xff0f, BIOS settings: hdc:DMA, hdd:DMA hdc: attached ide-scsi driver.
# hdparm /dev/hda /dev/hda: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) readonly = 0 (off) readahead = 8 (on) geometry = 9729/255/63, sectors = 156301488, start = 0
# hdparm /dev/hdc /dev/hdc: No such file or directory
hdc: attached ide-cdrom driver. hdc: ATAPI 32X CD-ROM drive, 128kB Cache, DMA
# hdparm /dev/hdc
/dev/hdc: HDIO_GET_MULTCOUNT failed: Invalid argument I/O support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 1 (on) keepsettings = 0 (off) HDIO_GET_NOWERR failed: Invalid argument readonly = 1 (on) readahead = 8 (on) HDIO_GETGEO failed: Invalid argument busstate = 1 (on) backup:~# hdparm -c1 -d1 /dev/hdc
/dev/hdc: setting 32-bit I/O support flag to 1 setting using_dma to 1 (on) I/O support = 1 (32-bit) using_dma = 1 (on)
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