fdisk -l 나오는 결과 어디까지 믿어야 합니까?
root@bt:~# fdisk -l
Disk /dev/sda: 120.0 GB, 120034123776 bytes
255 heads, 63 sectors/track, 14593 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0007063a
Device Boot Start End Blocks Id System
/dev/sda1 1 261 2096451 82 Linux swap / Solaris
/dev/sda2 262 3916 29358787+ 83 Linux
/dev/sda3 * 3917 7832 31455270 7 HPFS/NTFS
/dev/sda4 7833 14593 54307732+ 7 HPFS/NTFS
Disk /dev/mmcblk0: 2007 MB, 2007498752 bytes
29 heads, 28 sectors/track, 4828 cylinders
Units = cylinders of 812 * 512 = 415744 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/mmcblk0p1 1 4829 1960320+ 7 HPFS/NTFS
Note: sector size is 2048 (not 512)
Disk /dev/sdb: 1016 MB, 1016858624 bytes
32 heads, 61 sectors/track, 254 cylinders
Units = cylinders of 1952 * 2048 = 3997696 bytes
Sector size (logical/physical): 2048 bytes / 2048 bytes
I/O size (minimum/optimal): 2048 bytes / 2048 bytes
Disk identifier: 0x2554b567
Device Boot Start End Blocks Id System
/dev/sdb1 1 254 991494 b W95 FAT32
Partition 1 does not start on physical sector boundary.
WARNING: GPT (GUID Partition Table) detected on '/dev/sdc'! The util fdisk doesn't support GPT. Use GNU Parted.
Disk /dev/sdc: 8036 MB, 8036285952 bytes
256 heads, 63 sectors/track, 973 cylinders
Units = cylinders of 16128 * 512 = 8257536 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 1 308 2476000 ee GPT
Partition 1 has different physical/logical endings:
phys=(1023, 255, 63) logical=(307, 11, 12)
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/dev/sda 는 hdd
/dev/mmcblk0 은 sdcard
/dev/sdb 는 mp3 player
/dev/sdc 는 GPT table을 가진 usb 메모리입니다.
sector size는 이해가되는데,
head숫자, 트랙당 섹터수, 실린더수 이것들 왜 이러는걸까요?
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