Install centos 7.0 on a USB flash drive

Prerequisites: 1. centos 7.0 64-bit system: CentOS-7.0-1406-x86_64-DVD.iso
2. ultraiso
3. a USB flash drive of at least 8 GB.
Installation Steps: 1. Use ultraiso to burn the image to the USB flash drive (select to format the image to FAT32 when burning)

2. Delete the packages folder of the root directory of the burning U disk, copy the CentOS-7.0-1406-x86_64-DVD.iso to the root directory of the U disk.
3. Change the BIOS boot sequence (that is, enable the USB flash drive first), then enter this interface, press the tab key,

4. vmlinuz initrd = initrd. IMG Inst. stage2 = HD: Label = centos \ x207 \ x20x86_64 Rd. live. change check quiet to vmlinuz initrd = initrd. IMG Inst. stage2 = HD:/dev/sdb4 quiet. Here, sdb1 is the partition where the USB flash drive is located, or it may be sdb1, which can be modified according to the actual situation.

5. directly enter without modification. A dracut:/# will appear. Then, run the CD Dev command LS and find the number of SDB,

Install centos 7.0 on a USB flash drive