A Word about ChromeOS

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A Word About ChromeOS





Please Note


Grub2Win support for ChromeOS is currently experimental.


Chrome installation and import instructions are here   Importing ChromeOS Config Files


If you need support for Chrome issues, you must go to a Chrome or Brunch support group for help.

Check out the site where you downloaded your Chrome or Brunch files for support.





There are several reasons for this:



The Chrome kernels currently available for download are extremely hardware sensitive.

Users often experience black screens and system hangs when they try to boot these kernels on Windows PC's.




The GNU Grub code required to boot Chrome is both complex and not predictable.

The Linux parms for Chrome are not well documented.


Example:


       linux (loop,gpt9)/kernel boot=local noresume noswap loglevel=7 disablevmx=off \

       cros_secure cros_debug loop.max_part=16 img_part=$img_part img_path=$img_path




The Chrome partition configuration is also very complex.

It requires up to 12 partitions on a single disk.

Often, the partitions are loaded from a disk image .img file or from a virtualized disk.


In addition, several of the partitions employ proprietary filesystem formats unique to Chrome.

These are not normally readable from Windows or other Linux distributions.


Here is a typical disk layout for Chrome installation:



Disk  5     Style GPT   Sector 512        Size 1 TB         Used 7 GB  0.7%          Free 925 GB    WDC WD10EZEX                  



Partition 11   Chrome OS Firmware                                     Size   8 MB                  


Partition 6    Chrome OS Kernel                         FS OTHER      Size 512 Bytes                


Partition 7    Chrome OS Root FS                        FS OTHER      Size 512 Bytes                


Partition 9    Chrome OS Future Use                                   Size 512 Bytes                


Partition 10   Chrome OS Future Use                                   Size 512 Bytes                


Partition 2    Chrome OS Kernel                         FS OTHER      Size  16 MB                  


Partition 4    Chrome OS Kernel                         FS OTHER      Size  16 MB                  


Partition 8    Linux Filesystem                         FS EXT4       Size  16 MB    54% Full       Label = OEM    

UUID = B13EA26E-E754-4FC3-9B8C-5F0DBBD3667E


** Unallocated Space **                                               Size  64 MB


Partition 12   ** Other EFI **                          FS FAT16      Size  32 MB                   Label = EFI-SYSTEM    


Partition 5    Chrome OS Root FS                        FS OTHER      Size   2 MB                  


Partition 3    Chrome OS Root FS                        FS EXT2       Size   3 GB    95% Full       Label = ROOT-A    

UUID = 00000000-0000-0000-0000-000000000000


Partition 1    Linux Filesystem                         FS EXT4       Size   4 GB    56% Full       Label = STATE    

UUID = 978542BF-0712-4937-B2D9-425592990800


** Unallocated Space **                                               Size 925 GB
















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