Installation of CentOS 7 o'clock appears no Caching mode page found problem resolution

Source: Internet
Author: User

After the CentOS 7 image is engraved on the USB flash drive, when installing to the server, there are two startup options when booting with a USB flash drive, one is the UEFI boot option, one is the default startup option, and if you do not install it using UEFI, it is generally no problem, if you choose Uefi mode to install the system, Then the following prompt will appear when booting the system:

[SDB] No Caching Mode page found

  [SDB] Assuming drive cache:write through

....
Could not Boot
/dev/root does not exist

And then the command line stuck here, and now just wait, wait a moment, and then continue to scroll the error warning, this time to wait, then one will come out of the command line input interface, this time to enter the following command:

ls /dev/sd*

The input command will list all the storage devices, this time the first hard disk is SDA, if there are multiple partitions, then the SDA1, Sda2 and so on, if there are two hard disks that is the Sdb,u disk is generally the final number, if there is a hard disk, then the U disk is SDB, If there are two hard drives, then the USB flash drive is sdc,u disk generally will have SDC and sdc4 two options, SDC belongs to the USB memory, SDC4 is the mirror partition, so there is no problem, if there is a problem, then the next configuration several times good, Next enter the command reboot restart the computer, in the installation interface, do not select the installation, this time click the E key, will enter the editing interface, move the cursor to make the following changes:

On the second line, the default is: Vmlinuz initrd=initrd.img inst.stage2=hd:label=centos\x207\x20x86_64 Rd.live.check quiet

Change this line to: Vmlinuz initrd=initrd.img inst.stage2=hd:/dev/sdc4:/quiet

Is the HD: and the content between quiet modified to the location of the USB stick image so that you can, pay attention to write/dev/sdc4:/

Then follow the prompts to press the Ctrl+x key to start the installation, now normal access to the installation interface

To add a little bit about partitioning:

If you choose Uefi Boot, then in addition to the 200-500m boot partition, swap partition, the root partition, then also divided into a/boot/efi partition, the size is 164M, so it is recommended to split the root partition, all the space is divided into the root partition, This will maximize the use of Linux space

If you choose normal boot, essentially bios boot, then there is no/boot/efi partition, but the BIOS boot partition, this partition needs 1M.

During the installation process, the boot partition system will be prompted to create, if not clear, according to the system prompts the installation is OK,

Server installation, it is recommended that you install the infrastructure server option, which is slightly more than the minimum installation command

Installation of CentOS 7 o'clock appears no Caching mode page found problem resolution

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