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Created October 5, 2014 20:32
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a.rb
benzrf@benzrf-laptop:~$ sudo umount /dev/sdb
umount: /dev/sdb: not mounted
benzrf@benzrf-laptop:~$ sudo fdisk /dev/sdb
WARNING: GPT (GUID Partition Table) detected on '/dev/sdb'! The util fdisk doesn't support GPT. Use GNU Parted.
Command (m for help): o
Building a new DOS disklabel with disk identifier 0x6f091ad7.
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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