2010年11月9日 星期二

sd卡 fdisk紀錄

Command action


a toggle a bootable flag

b edit bsd disklabel

c toggle the dos compatibility flag

d delete a partition

l list known partition types

m print this menu

n add a new partition

o create a new empty DOS partition table

p print the partition table

q quit without saving changes

s create a new empty Sun disklabel

t change a partition's system id

u change display/entry units

v verify the partition table

w write table to disk and exit

x extra functionality (experts only)



Command (m for help): n

Command action

e extended

p primary partition (1-4)

p

Partition number (1-4): 1

First cylinder (1-976, default 1):

Using default value 1

Last cylinder, +cylinders or +size{K,M,G} (1-976, default 976): +1300M



Command (m for help): n

Command action

e extended

p primary partition (1-4)

p

Partition number (1-4): 2

First cylinder (661-976, default 661):

Using default value 661

Last cylinder, +cylinders or +size{K,M,G} (661-976, default 976): +200M



Command (m for help): n

Command action

e extended

p primary partition (1-4)

e

Partition number (1-4): 3

First cylinder (763-976, default 763):

Using default value 763

Last cylinder, +cylinders or +size{K,M,G} (763-976, default 976): +300M



Command (m for help): p



Disk /dev/sdb: 2014 MB, 2014838784 bytes

64 heads, 63 sectors/track, 976 cylinders

Units = cylinders of 4032 * 512 = 2064384 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000



所用裝置 Boot Start End Blocks Id System

/dev/sdb1 1 661 1331551+ 83 Linux

/dev/sdb2 661 763 205632 83 Linux

/dev/sdb3 763 915 306432 5 延伸的



Command (m for help): n

Command action

l logical (5 or over)

p primary partition (1-4)

l

First cylinder (764-915, default 764):

Using default value 764

Last cylinder, +cylinders or +size{K,M,G} (764-915, default 915): +150M



Command (m for help): n

Command action

l logical (5 or over)

p primary partition (1-4)

l

First cylinder (841-915, default 841):

Using default value 841

Last cylinder, +cylinders or +size{K,M,G} (841-915, default 915): +150M

Value out of range.

Last cylinder, +cylinders or +size{K,M,G} (841-915, default 915):

Using default value 915



Command (m for help): p



Disk /dev/sdb: 2014 MB, 2014838784 bytes

64 heads, 63 sectors/track, 976 cylinders

Units = cylinders of 4032 * 512 = 2064384 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000



所用裝置 Boot Start End Blocks Id System

/dev/sdb1 1 661 1331551+ 83 Linux

/dev/sdb2 661 763 205632 83 Linux

/dev/sdb3 763 915 306432 5 延伸的

/dev/sdb5 764 840 154208 83 Linux

/dev/sdb6 841 915 150175+ 83 Linux



Command (m for help): n

Command action

l logical (5 or over)

p primary partition (1-4)

p

Selected partition 4

First cylinder (915-976, default 915):

Using default value 915

Last cylinder, +cylinders or +size{K,M,G} (915-976, default 976):

Using default value 976



Command (m for help): p



Disk /dev/sdb: 2014 MB, 2014838784 bytes

64 heads, 63 sectors/track, 976 cylinders

Units = cylinders of 4032 * 512 = 2064384 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000



所用裝置 Boot Start End Blocks Id System

/dev/sdb1 1 661 1331551+ 83 Linux

/dev/sdb2 661 763 205632 83 Linux

/dev/sdb3 763 915 306432 5 延伸的

/dev/sdb4 915 976 122976+ 83 Linux

/dev/sdb5 764 840 154208 83 Linux

/dev/sdb6 841 915 150175+ 83 Linux

Command (m for help): w


The partition table has been altered!



Calling ioctl() to re-read partition table.

Syncing disks.

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2 則留言:

鍾志均 提到...

# mkfs.vfat /dev/sdb1
# mkfs.ext3 /dev/sdb2
# mkfs.ext3 /dev/sdb4
# mkfs.ext3 /dev/sdb5
# mkfs.ext3 /dev/sdb6

鍾志均 提到...

割完之後
再把第一個刪掉
d
1

n
p
+20M (一開始shift 20M)
以防止寫入sdb1時把uboot, uImage and uramdisk覆蓋掉

w