今十分です。 64GBのSDカードがありますが、もう分かりません。フォーマットしましたが、データとパーティションテーブルがそのまま残っていました。 :'(
私が望むのは空のドライブであり、データをバックアップしました。
hartofwave@HartofWave-Flaming-Blade-GTI:~ > sudo fdisk -l -u /dev/sdb
Disk /dev/sdb: 63.9 GB, 63864569856 bytes
64 heads, 32 sectors/track, 60906 cylinders, total 124735488 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6b736964
This doesn't look like a partition table
Probably you selected the wrong device.
Device Boot Start End Blocks Id System
/dev/sdb1 ? 1701998624 3331515282 814758329+ 74 Unknown
/dev/sdb2 ? 1330184192 1869160479 269488144 65 Novell Netware 386
/dev/sdb3 ? 538989391 1937352302 699181456 53 OnTrack DM6 Aux3
/dev/sdb4 ? 3909118566 3909183904 32669+ bb Boot Wizard hidden
Partition table entries are not in disk order
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hartofwave@HartofWave-Flaming-Blade-GTI:~ > sudo parted /dev/sdb unit s print
Model: TS-RDF5 SD Transcend (scsi)
Disk /dev/sdb: 124735488s
Sector size (logical/physical): 512B/512B
Partition Table: loop
Number Start End Size File system Flags
1 0s 124735487s 124735488s fat32
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hartofwave@HartofWave-Flaming-Blade-GTI:~ > sudo mount -l
/dev/sda1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/cgroup type tmpfs (rw)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
none on /sys/fs/pstore type pstore (rw)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
systemd on /sys/fs/cgroup/systemd type cgroup (rw,noexec,nosuid,nodev,none,name=systemd)
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Hartofwave@HartofWave-Flaming-Blade-GTI:~ > sudo mkfs.ext2 /dev/sdb
mke2fs 1.42.9 (4-Feb-2014)
/dev/sdb is entire device, not just one partition!
Proceed anyway? (y,n) y
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
3899392 inodes, 15591936 blocks
779596 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=4294967296
476 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424
Allocating group tables: done
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
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Hartofwave@HartofWave-Flaming-Blade-GTI:~ > sudo dd if=/dev/zero of=/dev/sdb bs=1 count=512
[sudo] password for hartofwave:
512+0 records in
512+0 records out
512 bytes (512 B) copied, 0.00280728 s, 182 kB/s
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hartofwave@HartofWave-Flaming-Blade-GTI:~ > sudo fdisk /dev/sdb
[sudo] password for hartofwave:
Command (m for help): o
Building a new DOS disklabel with disk identifier 0x0cf4e32b.
Changes will remain in memory only, until you decide to write them.
After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
Command (m for help): w
The partition table has been altered!
Calling ioctl() to re-read partition table.
Syncing disks.
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修正する
だからまだ修正はありません。 1つの質問は、変更を適用して作成した後にデバイスを更新したり、PCを再起動した後に変更がキャンセルされるのはなぜですか？誰でも私が試してみることができますか？
sudo fdisk /dev/sdb
[sudo] password for hartofwave:
Welcome to fdisk (util-linux 2.25.2).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): v
Partition 1: overlaps partition 2.
Partition 1: overlaps partition 3.
Total allocated sectors 4866404289 greater than the maximum 124735488.