Version 11 (modified by mitty, 12 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
- GPT fdisk Tutorial
- A gdisk Walkthrough A demonstration of how to use GPT fdisk's interactive gdisk tool.
Advanced Format Technology
- 4096 バイトセクタの HDD と Linux - daily dayflower
- Linux で 4096 バイトセクタ HDD を fdisk - daily dayflower
- 具体的なfdisk手順
- LVM on RAID するときの注意点 | Green Rabbit
- RAIDのmetadataについて
- OpenSolaris 2009.06でWD*EARS(WD15EARS)を使用する その2 - 部屋を掃除したら漫画が沢山出てきたので書く日記
- 4kbyte境界がどのようにしてずれるのかの図示
- alignment - How do I correctly align partions on a hdd with sector size of 4096 bytes? - Ask Ubuntu
- $ sudo parted /dev/sdb
(parted) align-check optimal 1 1 aligned
- $ sudo parted /dev/sdb
M/B support
M/B (BIOS ver) | South bridge | HDD model | BOIS detection | OS detection |
---|---|---|---|---|
ASUS M2A-VM HDMI (2302) | ATI SB600 | WD30EZRX-00MMMB0 | OK | OK(Knoppix 6.4.4) |
ASUS P5K-VM (1001) | ICH9 | WD30EZRX-00MMMB0 | NG(801.6GB) | OK(Windows 7/Knoppix 6.4.4) |
Intel DG33SXG2 (DPP3510J.15A.0316) | ICH9R | WD30EZRX-00MMMB0 | unknown | OK(Knoppix 6.4.4) |
GIGABYTE GA-5YASV-RH (NEC 1.0.0042) | ICH9R | WD30EZRX-00MMMB0 | NG(802GB) | OK(Ubuntu 10.04) |
BIOS OK
BIOS NG
OS
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.
Attachments (4)
- M2A-VM.jpg (77.4 KB) - added by mitty 13 years ago.
- P5K-VM.jpg (58.9 KB) - added by mitty 13 years ago.
- GA-5YASV-RH.jpg (65.7 KB) - added by mitty 13 years ago.
- Windows7.png (75.3 KB) - added by mitty 13 years ago.
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