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SubjectRe: Cylinder limits jumper for drives over 32GB

Andries,

I just one of these Draco Drives from Maxtor for evaluation.
After working the kernel, hdparm, fdisk......I get........
root@p6dnf% hdparm.big -i /dev/hdg

/dev/hdg:

Model=Maxtor 54098U8, FwRev=DA620CQ0, SerialNo=K802S4EC
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80041248
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 *udma4
Drive Supports : ATA/ATAPI-4 T13 1153D revision 17 : ATA-1 ATA-2 ATA-3 ATA-4 ATA-5
Kernel Drive Geometry LogicalCHS=79406/16/63 PhysicalCHS=79406/16/63

root@p6dnf% fdisk /dev/hdg

The number of cylinders for this disk is set to 79406.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., LILO)
2) booting and partitioning software from other OSs
(e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/hdg: 16 heads, 63 sectors, 79406 cylinders
Units = cylinders of 1008 * 512 bytes

Device Boot Start End Blocks Id System
/dev/hdg1 1 79406 40020592+ 83 Linux

Command (m for help):

Andre Hedrick
The Linux ATA/IDE guy


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