diff options
| -rw-r--r-- | doc/guix.texi | 34 | ||||
| -rw-r--r-- | gnu/ci.scm | 2 | ||||
| -rw-r--r-- | gnu/system/image.scm | 14 | ||||
| -rw-r--r-- | guix/scripts/system.scm | 2 |
4 files changed, 43 insertions, 9 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 50c4984d71..617b8463e3 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -40982,8 +40982,8 @@ QEMU monitor and the VM. @cindex image, creating disk images The @code{image} command can produce various image types. The image type can be selected using the @option{--image-type} option. It -defaults to @code{mbr-raw}. When its value is @code{iso9660}, the -@option{--label} option can be used to specify a volume ID with +defaults to @code{mbr-hybrid-raw}. When its value is @code{iso9660}, +the @option{--label} option can be used to specify a volume ID with @code{image}. By default, the root file system of a disk image is mounted non-volatile; the @option{--volatile} option can be provided to make it volatile instead. When using @code{image}, the bootloader @@ -41001,8 +41001,8 @@ qemu-system-x86_64 -enable-kvm -hda /tmp/my-image.qcow2 -m 1000 \ -bios $(guix build ovmf)/share/firmware/ovmf_x64.bin @end example -When using the @code{mbr-raw} image type, a raw disk image is produced; -it can be copied as is to a USB stick, for instance. Assuming +When using the @code{mbr-hybrid-raw} image type, a raw disk image is +produced; it can be copied as is to a USB stick, for instance. Assuming @code{/dev/sdc} is the device corresponding to a USB stick, one can copy the image to it using the following command: @@ -41139,7 +41139,7 @@ of the image. For the @code{image} action, create an image with given @var{type}. When this option is omitted, @command{guix system} uses the -@code{mbr-raw} image type. +@code{mbr-hybrid-raw} image type. @cindex ISO-9660 format @cindex CD image format @@ -45347,7 +45347,7 @@ then directly boot from it, without any kind of installation procedure. The @command{guix system image} command is able to turn an operating system definition into a bootable image. This command supports -different image types, such as @code{mbr-raw}, @code{iso9660} and +different image types, such as @code{mbr-hybrid-raw}, @code{iso9660} and @code{docker}. Any modern @code{x86_64} machine will probably be able to boot from an @code{iso9660} image. However, there are a few machines out there that require specific image types. Those machines, in general @@ -45611,8 +45611,24 @@ from them to simplify the @code{image} definition. The @code{(gnu system image)} module provides the following @code{image} definition variables. +@defvar mbr-disk-image +An MBR disk-image composed of a single ROOT partition. The ROOT +partition starts at a 1@tie{}MiB offset so that the bootloader can +install itself in the post-MBR gap. +@end defvar + +@defvar mbr-hybrid-disk-image +An MBR disk-image composed of two partitions: a 64 bits ESP partition +and a ROOT boot partition. The ESP partition starts at a 1@tie{}MiB +offset so that a BIOS compatible bootloader can install itself in the +post-MBR gap. The image can be used by @code{x86_64} and @code{i686} +machines supporting only legacy BIOS booting. The ESP partition ensures +that it can also be used by newer machines relying on UEFI booting, +hence the @emph{hybrid} denomination. +@end defvar + @defvar efi-disk-image -A MBR disk-image composed of two partitions: a 64 bits ESP partition and +A GPT disk-image composed of two partitions: a 64 bits ESP partition and a ROOT boot partition. This image can be used on most @code{x86_64} and @code{i686} machines, supporting BIOS or UEFI booting. @end defvar @@ -45703,6 +45719,10 @@ system image)} and the @code{(gnu system images @dots{})} modules. Build an image based on the @code{mbr-disk-image} image. @end defvar +@defvar mbr-hybrid-raw-image-type +Build an image based on the @code{mbr-hybrid-disk-image} image. +@end defvar + @defvar efi-raw-image-type Build an image based on the @code{efi-disk-image} image. @end defvar diff --git a/gnu/ci.scm b/gnu/ci.scm index 520ac28110..279dd4d910 100644 --- a/gnu/ci.scm +++ b/gnu/ci.scm @@ -268,7 +268,7 @@ otherwise use the IMAGE name." (if (member system %guix-system-supported-systems) `(,(image->job store (image - (inherit efi-disk-image) + (inherit mbr-hybrid-disk-image) (operating-system installation-os)) #:name "usb-image" #:system system) diff --git a/gnu/system/image.scm b/gnu/system/image.scm index 5b8da2f896..b1b928b222 100644 --- a/gnu/system/image.scm +++ b/gnu/system/image.scm @@ -77,6 +77,7 @@ root-partition mbr-disk-image + mbr-hybrid-disk-image efi-disk-image iso9660-image docker-image @@ -86,6 +87,7 @@ image-with-os mbr-raw-image-type + mbr-hybrid-raw-image-type efi-raw-image-type efi32-raw-image-type qcow2-image-type @@ -156,6 +158,13 @@ parent image record." (inherit root-partition) (offset root-offset)))))) +(define mbr-hybrid-disk-image + (image-without-os + (format 'disk-image) + (partition-table-type 'mbr) + (partitions + (list esp-partition root-partition)))) + (define efi-disk-image (image-without-os (format 'disk-image) @@ -217,6 +226,11 @@ set to the given OS." (name 'mbr-raw) (constructor (cut image-with-os mbr-disk-image <>)))) +(define mbr-hybrid-raw-image-type + (image-type + (name 'mbr-hybrid-raw) + (constructor (cut image-with-os mbr-hybrid-disk-image <>)))) + (define efi-raw-image-type (image-type (name 'efi-raw) diff --git a/guix/scripts/system.scm b/guix/scripts/system.scm index ec331809ef..547387d5e1 100644 --- a/guix/scripts/system.scm +++ b/guix/scripts/system.scm @@ -1169,7 +1169,7 @@ Some ACTIONS support additional ARGS.\n")) (debug . 0) (verbosity . #f) ;default (validate-reconfigure . ,ensure-forward-reconfigure) - (image-type . mbr-raw) + (image-type . mbr-hybrid-raw) (image-size . guess) (install-bootloader? . #t) (label . #f) |