[ad#ads-inner]Ultimate Boot CD provides a text-based menu after you boot your PC with the CD inserted, that lets you select the tools that you want to run. The download comes as an ISO image. You should be comfortable with commandline utilities to use the software.
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This defines a GRUB menu entry named title. When this entry isselected from the menu, GRUB will set the chosen environment variableto value of --id if --id is given, execute the list ofcommands given within braces, and if the last command in the list returnedsuccessfully and a kernel was loaded it will execute the boot command.
The --skip-sig option should be used with care, and shouldalways be used in concert with a whitelist of acceptable variableswhose values should be set. Failure to employ a carefully constructedwhitelist could result in reading a malicious value into criticalenvironment variables from the file, such as settingcheck_signatures=no, modifying prefix to boot from anunexpected location or not at all, etc.
This command will operate successfully even when environment variablecheck_signatures is set to enforce(see check_signatures), since it writes to disk and does not alterthe behavior of GRUB based on any contents of disk that have beenread. It is possible to modify a digitally signed environment blockfile from within GRUB using this command, such that its signature willno longer be valid on subsequent boots. Care should be taken in suchadvanced configurations to avoid rendering the systemunbootable. See Using digital signatures, for more information.
By default, the boot loader interface is accessible to anyone with physicalaccess to the console: anyone can select and edit any menu entry, and anyonecan get direct access to a GRUB shell prompt. For most systems, this isreasonable since anyone with direct physical access has a variety of otherways to gain full access, and requiring authentication at the boot loaderlevel would only serve to make it difficult to recover broken systems.
By default on x86 BIOS systems, grub-install will use someextra space in the bootloader embedding area for Reed-Solomonerror-correcting codes. This enables GRUB to still boot successfullyif some blocks are corrupted. The exact amount of protection offeredis dependent on available space in the embedding area. R sectors ofredundancy can tolerate up to R/2 corrupted sectors. Thisredundancy may be cumbersome if attempting to cryptographicallyvalidate the contents of the bootloader embedding area, or in moremodern systems with GPT-style partition tables (see BIOS installation) where GRUB does not reside in any unpartitioned spaceoutside of the MBR. Disable the Reed-Solomon codes with this option.
If you intend to use the hard drive only for booting and thendownload everything over the network, you should download thenetboot/debian-installer/i386/initrd.gz file and itscorresponding kernelnetboot/debian-installer/i386/linux. This will allow youto repartition the hard disk from which you boot the installer, although youshould do so with care.
Alternatively, if you intend to keep an existing partition on the harddrive unchanged during the install, you can download thehd-media/initrd.gz file and its kernel, as well ascopy a CD (or DVD) iso to the drive (make sure the file is named ending in.iso). The installer can then boot from the driveand install from the CD/DVD image, without needing the network.
If your URL list has a particular numbering pattern, you can add curly braces to fetch all the URLs that match the pattern. For example, if you want to download a series of Linux kernels starting from version 5.1.1 to 5.1.15, you can do the following.
The following commands will download the full Android release from different Git repositories and build the Android images.It may take a very long time depending on Internel connection, Build machine, and remote servers.The process may fail fetching the repositories, in this case it can be started again. 2ff7e9595c
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