wiki:TipAndDoc/Hardware/Storage/2TB-HDD

Version 10 (modified by mitty, 8 years ago) (diff)

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  • http://wiki.nothing.sh/page/Over2TB

    現在HDDには2つの原因の2TBの壁があります。(厳密には2.19TBの壁、または2TiBの壁) 2TBより大きいパーティションを扱えないMBR形式のパーティションテーブルと、 2TBより大きいハードディスクドライブの2TBまでしか扱えない10バイトCDB(32ビットLBA)です。 2TB以下の複数のパーティションに分ける、という解決方法を考えている人がよくいますが 後者の制限を持つ場合、どれだけパーティションを作っても最初の2TBしか見えません

GPT

Advanced Format Technology

M/B support

M/B (BIOS ver)South bridgeHDD modelBOIS detectionOS detection
ASUS M2A-VM HDMI (2302)ATI SB600WD30EZRX-00MMMB0OKOK(Knoppix 6.4.4)
ASUS P5K-VM (1001)ICH9WD30EZRX-00MMMB0NG(801.6GB)OK(Windows 7/Knoppix 6.4.4)
Intel DG33SXG2 (DPP3510J.15A.0316)ICH9RWD30EZRX-00MMMB0unknownOK(Knoppix 6.4.4)
GIGABYTE GA-5YASV-RH (NEC 1.0.0042)ICH9RWD30EZRX-00MMMB0NG(802GB)OK(Ubuntu 10.04)

BIOS OK

  • M2A-VM

BIOS NG

  • P5K-VM
  • GA-5YASV-RH

OS

  • Windows 7 x64

HDD spec

WD30EZRX-00MMMB0

  • ASUS M2A-VM HDMI (BIOS: 5001)
  • Knoppix 6.4.4 (Linux Microknoppix 2.6.37 #1 SMP PREEMPT Wed Feb 23 07:12:05 UTC 2011 i686 GNU/Linux)
  • root@Microknoppix:~# fdisk -lu /dev/sd?
    Disk /dev/sda: 3000.6 GB, 3000592982016 bytes
    255 heads, 63 sectors/track, 364801 cylinders, total 5860533168 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 4096 bytes
    I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    Disk identifier: 0x00000000
    
    Disk /dev/sda doesn't contain a valid partition table
    
  • root@Microknoppix:~# hdparm -tT /dev/sda
    /dev/sda:
     Timing cached reads:   4720 MB in  2.00 seconds = 2360.98 MB/sec
     Timing buffered disk reads: 370 MB in  3.01 seconds = 122.93 MB/sec
    

  • GIGABYTE GA-5YASV-RH (NEC Express5800/110Ge)
  • Intel Core2 E8400
  • Ubuntu 10.04.4 LTS
  • $ sudo hdparm -tT /dev/sd?
    /dev/sdb:
     Timing cached reads:   15076 MB in  2.00 seconds = 7546.84 MB/sec
     Timing buffered disk reads:  390 MB in  3.01 seconds = 129.58 MB/sec
    
  • $ sudo dd if=/dev/zero of=/dev/sdb bs=4096 count=1048576
    1048576+0 records in
    1048576+0 records out
    4294967296 bytes (4.3 GB) copied, 34.005 s, 126 MB/s
    
  • $ sudo badblocks -svw /dev/sdb
    100.00% done, 65:50:08 elapsed
    Pass completed, 0 bad blocks found.
    

WD30EFRX-68AX9N0

  • GIGABYTE GA-5YASV-RH (NEC Express5800/110Ge)
  • Intel Core2 E8400
  • Ubuntu 10.04.4 LTS
  • $sudo hdparm -tT /dev/sd?
    /dev/sdc:
     Timing cached reads:   15058 MB in  2.00 seconds = 7538.21 MB/sec
     Timing buffered disk reads:  466 MB in  3.00 seconds = 155.21 MB/sec
    
  • $ sudo dd if=/dev/zero of=/dev/sdc bs=4096 count=1048576
    1048576+0 records in
    1048576+0 records out
    4294967296 bytes (4.3 GB) copied, 28.5866 s, 150 MB/s
    
  • $ sudo badblocks -svw /dev/sdc
    100.00% done, 58:21:15 elapsed
    Pass completed, 0 bad blocks found.
    

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