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1. EL CAPITAN DMG TO USB FOR MAC
2. EL CAPITAN DMG TO USB INSTALL
3. EL CAPITAN DMG TO USB UPGRADE
4. EL CAPITAN DMG TO USB PLUS

On my machines there was already 12 loopsĮvery now and then use "df" just to see which partitions and names you have in your system. Kpartx you need to add -v (verbose) to see which loop is created so :kpartx -av InstallESD.img Run all the commands it as root! so use "sudo su" Only things that need to take into account are: Rsync -aAEHW /mnt/OSX_InstallESD/BaseSystem.dmg /mnt/usbstick/ Rsync -aAEHW /mnt/OSX_InstallESD/BaseSystem.chunklist /mnt/usbstick/ Rsync -aAEHW /mnt/OSX_InstallESD/Packages /mnt/usbstick/System/Installation/ Rsync -aAEHW /mnt/OSX_BaseSystem/ /mnt/usbstick/ Mkfs.hfsplus -v "OS X Base System" /dev/sdX1 # partition the USB flash drive, /dev/sdX Mount /dev/mapper/loop1p1 /mnt/OSX_BaseSystem # convert base system disk image to raw formatĭmg2img /mnt/OSX_InstallESD/BaseSystem.dmg BaseSystem.img Mount /dev/mapper/loop0p2 /mnt/OSX_InstallESD app/Contents/SharedSupport/InstallESD.dmg" InstallESD.img # convert installer disk image to raw formatĭmg2img "Install OS X. Mkdir -p /mnt/OSX_InstallESD /mnt/OSX_BaseSystem /mnt/usbstick There is no need to try using the script, as it works with the list of commands on the read me file. This works! I used it for making a usb from El Capitan installer, using the InstallESD.dmg that you find inside the InsallMacOSX.dmg. rsync supports also -X parameter, supposed to copy HFS+ extended attributes, but in practice it fails with the error "Operation not supported". It is possible to copy with other tools (tar, cpio), just supply parameters preserving the most of file metadata. Rsync -aAEHW -P /mnt/installesd/BaseSystem.chunklist /mnt/usbstick/ Rsync -aAEHW -P /mnt/installesd/BaseSystem.dmg /mnt/usbstick/

Rsync -aAEHW -P /mnt/installesd/Packages /mnt/usbstick/System/Installation/

Rm -f /mnt/usbstick/System/Installation/Packages Mkfs.hfsplus -v "OS X Base System" /dev/sdb1Ĭopy missing installer files (beware of ending /): rsync -aAEHW -info=progress2 /mnt/basesystem/ /mnt/usbstick/ Mount /dev/mapper/loop1p1 /mnt/basesystemįormat the USB flash drive as HFS+: sgdisk -o /dev/sdb But writing it directly to the USB drive does not work, because that would create a partition with almost no free space and still lacking some important files.Įxtract base system image BaseSystem.dmg, convert into raw and mount too: dmg2img /mnt/installesd/BaseSystem.dmg BaseSystem.img InstallESD.dmg contains another disk image, BaseSystem.dmg, which is a bootable installer disk. Mount /dev/mapper/loop0p2 /mnt/installesd Working as a root, convert InstallESD.dmg into raw image format and mount it using kpartx: dmg2img InstallESD.dmg InstallESD.img

InstallESD.dmg is an image of a GPT disk with HFS+ partition which contains installer files, but is not bootable itself. Manually it's as mentioned in MacWorld, but using the Linux tools: If you're using a Mac notebook computer, plug it into AC power.There's a ready script that automates this whole process.

EL CAPITAN DMG TO USB INSTALL

It takes time to download and install OS X, so make sure that you have a reliable Internet connection. Time Machine makes it simple, and other backup methods are also available. If your Mac isn't compatible with OS X El Capitan, the installer will let you know.īefore installing any upgrade, it’s a good idea to back up your Mac. To find your Mac model, memory, storage space, and macOS version, choose About This Mac from the Apple menu . Mac Pro introduced in early 2008 or later Mac mini introduced in early 2009 or later MacBook Pro introduced in mid 2007 or later MacBook Air introduced in late 2008 or later

EL CAPITAN DMG TO USB PLUS

MacBook introduced in 2009 or later, plus MacBook (13-inch, Aluminum, Late 2008) Your Mac also needs at least 2GB of memory and 8.8GB of available storage space.

EL CAPITAN DMG TO USB UPGRADE

You can upgrade to OS X El Capitan from OS X Snow Leopard or later on any of the following Mac models.

EL CAPITAN DMG TO USB FOR MAC

OS X El Capitan remains available for Mac computers that can't upgrade to macOS Catalina, Mojave, High Sierra, or Sierra, or that need to upgrade to El Capitan first.