Very Computer

When I put my harddisk in a removable cassette I get the following
error message during boot:

31 13:3
5:27 EST 1997
...
ide: i82371 PIIX (Triton) on PCI bus 0 function 57
    ide0: BM-DMA at 0xe800-0xe807
    ide1: BM-DMA at 0xe808-0xe80f
hda: FUJITSU MPA3035ATU, 3337MB w/0kB Cache, LBA, CHS=847/128/63, DMA
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
...
Partition check:
 hda:hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest

Quote:}

hda: disabled DMA
ide0: reset: success
 hda1 hda2 hda3
VFS: Mounted root (ext2 filesystem) readonly.

*** hdparm with cassette ***
# hdparm /dev/hda

/dev/hda:
 multcount    =  0 (off)
 I/O support  =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 847/128/63, sectors = 6835952, start = 0

# hdparm -i /dev/hda

/dev/hda:

 Model=FUJITSU MPA3035ATU, FwRev=9517, SerialNo=06181582
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
 RawCHS=6780/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=0(?), BuffSize=0kB, MaxMultSect=32, MultSect=off
 DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=0(slow)
 CurCHS=6780/16/63, CurSects=6834240, LBA=yes, LBAsects=6835952
 tDMA={min:120,rec:120}, DMA modes: mword0 mword1 *mword2
 IORDY=yes, tPIO={min:240,w/IORDY:120}, PIO modes: mode3 mode4

*** hdparm without cassette ***
# hdparm /dev/hda

/dev/hda:
 multcount    =  0 (off)
 I/O support  =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 847/128/63, sectors = 6835952, start = 0

# hdparm -i /dev/hda

/dev/hda:

 Model=FUJITSU MPA3035ATU, FwRev=9517, SerialNo=06181582
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs RotSpdTol>.5% }
 RawCHS=6780/16/63, TrkSize=0, SectSize=0, ECCbytes=4
 BuffType=0(?), BuffSize=0kB, MaxMultSect=32, MultSect=off
 DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=0(slow)
 CurCHS=6780/16/63, CurSects=6834240, LBA=yes, LBAsects=6835952
 tDMA={min:120,rec:120}, DMA modes: mword0 mword1 *mword2
 IORDY=yes, tPIO={min:240,w/IORDY:120}, PIO modes: mode3 mode4

        /Bo Branten

Probably getting too much resistance or capacitance across the contacts.

But you could try shortening the IDE ribbon cables.. might provide just
enough timing margin to allow use of the cassettes.
--

the Linux IDE guy