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60 GB Hard Disk partition problem on Ultra 10
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McTango
n00b
n00b


Joined: 11 Dec 2004
Posts: 66
Location: Formosa - Argentina

PostPosted: Tue Dec 01, 2009 1:25 pm    Post subject: 60 GB Hard Disk partition problem on Ultra 10 Reply with quote

Hi everyone...

I have problems partitioning an IDE 60 GB hard disk.
Disk is a Western Digital Caviar WD600BB-00JHA0
"hdparm -Ii /dev/hda" gives this info:
Code:
 Model=WDC WD600BB-00JHA0, FwRev=05.01C05, SerialNo=WD-WMAM92321556
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=66
 BuffType=unknown, BuffSize=2048kB, MaxMultSect=128, MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=no
 IORDY=no, tPIO={min:120,w/IORDY:120}
 PIO modes:  pio0 pio3 pio4
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: Unspecified:  ATA/ATAPI-1,2,3,4,5,6

 * signifies the current active mode


ATA device, with non-removable media
        Model Number:       WDC WD600BB-00JHA0
        Serial Number:      WD-WMAM92321556
        Firmware Revision:  05.01C05
Standards:
        Supported: 6 5 4
        Likely used: 6
Configuration:
        Logical         max     current
        cylinders       16383   16383
        heads           16      16
        sectors/track   63      63
        --
        CHS current addressable sectors:   16514064
        LBA    user addressable sectors:  117231408
        device size with M = 1024*1024:       57241 MBytes
        device size with M = 1000*1000:       60022 MBytes (60 GB)
Capabilities:
        LBA, IORDY(can be disabled)
        Standby timer values: spec'd by Standard, with device specific minimum
        R/W multiple sector transfer: Max = 16  Current = 0
        Recommended acoustic management value: 128, current value: 254
        DMA: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 udma5
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4
             Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
        Enabled Supported:
           *    SMART feature set
                Security Mode feature set
           *    Power Management feature set
           *    Write cache
           *    Look-ahead
           *    Host Protected Area feature set
           *    WRITE_BUFFER command
           *    READ_BUFFER command
           *    DOWNLOAD_MICROCODE
                SET_MAX security extension
                Automatic Acoustic Management feature set
           *    Device Configuration Overlay feature set
           *    Mandatory FLUSH_CACHE
           *    SMART error logging
           *    SMART self-test
           *    SMART Command Transport (SCT) feature set
           *    SCT Long Sector Access (AC1)
           *    SCT LBA Segment Access (AC2)
           *    SCT Error Recovery Control (AC3)
           *    SCT Features Control (AC4)
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
        not     frozen
        not     expired: security count
        not     supported: enhanced erase
HW reset results:
        CBLID- above Vih
        Device num = 0 determined by the jumper
Checksum: correct


If i create an emtpy DOS partition table, i have no problems. It recognizes all the disk size, as you can see on this example partition scheme:
Code:
Disk /dev/hda: 60.0 GB, 60022480896 bytes
16 heads, 63 sectors/track, 116301 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes
Disk identifier: 0xc8e706aa

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1               1       39684    20000704+  83  Linux
/dev/hda2           39685       79368    20000736   83  Linux
/dev/hda3           79369      116301    18614232   83  Linux

I can format ("mke2fs -j /dev/hda1") and mount all partitions with no size problems.

But, when i create a new empty Sun disklabel, it makes a partition scheme that seems to have all disk size, like this:
Code:
Disk /dev/hda (Sun disk label): 16 heads, 63 sectors, 50765 cylinders
Units = cylinders of 1008 * 512 bytes

   Device Flag    Start       End    Blocks   Id  System
/dev/hda1             0    116200  58564800   83  Linux native
/dev/hda2  u     116200    116301     50904   82  Linux swap
/dev/hda3             0    116301  58615704    5  Whole disk
but as you can see, it says 50765 cylinders, so when i try to repartition hda1 an hda2, i can't select beyond 50765 cyl.
Because of this, i can handle only 25 GB using Sun disklabel, wasting about 23 GB.
I changed cylinders to 65535, and the changes was accepted because remains on 65535, so this is the best size i can get:
Code:
Disk /dev/hda (Sun disk label): 16 heads, 63 sectors, 5400 rpm
65535 cylinders, 2 alternate cylinders, 65535 physical cylinders
0 extra sects/cyl, interleave 1:1
Label ID: Linux cyl 116301 alt 2 hd 16 sec 63
Volume ID:
Units = cylinders of 1008 * 512 bytes

   Device Flag    Start       End    Blocks   Id  System
/dev/hda1             0     19841   9999864   83  Linux native
/dev/hda2         19841     20833    499968   82  Linux swap
/dev/hda3             0     65535  33029640    5  Whole disk
/dev/hda4         20833     40674   9999864   83  Linux native
/dev/hda5         40674     65535  12529944   83  Linux native
This gives me 32 GB instead of 25 GB.
I tried changing heads from 16 to 255, but after writing and restarting "fdisk", remains on 16 heads.

The problem is not OBP, because the machine has a secondary 160 GB IDE hard disk that was recognized entirely:
Code:
Disk /dev/hdd (Sun disk label): 255 heads, 63 sectors, 5400 rpm
19457 cylinders, 2 alternate cylinders, 19457 physical cylinders
0 extra sects/cyl, interleave 1:1
Label ID: Linux cyl 19457 alt 2 hd 255 sec 63
Volume ID:
Units = cylinders of 16065 * 512 bytes

   Device Flag    Start       End    Blocks   Id  System
/dev/hdd1             0      2612  20980890   83  Linux native
/dev/hdd2          2612      5224  20980890   83  Linux native
/dev/hdd3             0     19457 156288352+   5  Whole disk
/dev/hdd4          5224      7836  20980890   83  Linux native
/dev/hdd5          7836     19457  93345682+  83  Linux native

So i think the problem with 60 GB hard disk is the disk itself.

Any ideas?

Thanks.
_________________
Charly Tango
Formosa - Argentina
‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
To emerge, or not to emerge: that is the question.
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gtbX
Tux's lil' helper
Tux's lil' helper


Joined: 11 Oct 2003
Posts: 99

PostPosted: Thu Dec 10, 2009 6:13 am    Post subject: Reply with quote

Yeah, it looks like it's your drive.

When you used a DOS partition table, it reported that you had 116301 cylinders, or 0x1C64D in hex. With the Sun Disklabel, it only reported 50765 cylinders, or 0xC64D in hex. Note that the Sun Disklabel is only using the lower 16 bits of the logical cylinder count from your drive (0xC64D). Even setting the cylinder count to 65535 (the maximum value you can represent with 16 bits) won't cut it because the drive has so few logical heads. Your 160GB drive, doesn't have this problem because it has 255 logical heads - it doesn't need as many cylinders to store more data.

Since it works fine with a DOS partition table, I say just use that. My Ultra 5 boots from a 1GB drive on /dev/hda that uses a Sun Disklabel. It also has a 320GB drive on /dev/sda that uses a DOS disklabel for /home, /usr and /var. I haven't had any problems with this setup so far. If you want to be able to boot off your 60GB drive though, you may be SOL :(
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