Here is my dilemma. I’ll make this clear as there is always someone who says ‘why don’t you use internet recovery, brah’ or some such.
I have a 2011 11” MacBook Air. I am attempting to reinstall it to its base OS, Lion 10.9. This is so I can upgrade it to Mavericks rather than High Sierra as the battery life will be better.
The internal HDD has been formatted using Disk Utility in internet recovery. I had previously installed Chrome OS Flex on there which worked fine but kept freezing.
Internet Recovery does not work. Apple have left the links to rot and the security keys are outdated. They expired in 2018. Normally you can set the date of the Mac to 2018 and get around this using Terminal. This doesn’t work for Internet Recovery as it just resets to 2024 as soon as you connect to WiFi.
I have 2 USB Drives. One is a blank 16gb drive ready to be turned into an installer. The other is an 8gb with the Lion disk image (InstallMacOS.dmg) on it.
Under normal OS circumstances you can get Terminal to create a USB installer by writing from the internal HDD.
I have the two USB Drives. They both turn up in Disk Utility and are Mac formatted ie not FAT.
I should be able to use Terminal to write an installed by pulling the .dmg from one USB and writing it to the other. I just need the right command to do so.
Can anybody suggest the right one?
I don’t have an alternative Mac to use at this time. I tried making a USB installer using TransMac on Windows and that seemed to work but the Mac didn’t recognise it at boot.
I have a 2011 11” MacBook Air. I am attempting to reinstall it to its base OS, Lion 10.9. This is so I can upgrade it to Mavericks rather than High Sierra as the battery life will be better.
The internal HDD has been formatted using Disk Utility in internet recovery. I had previously installed Chrome OS Flex on there which worked fine but kept freezing.
Internet Recovery does not work. Apple have left the links to rot and the security keys are outdated. They expired in 2018. Normally you can set the date of the Mac to 2018 and get around this using Terminal. This doesn’t work for Internet Recovery as it just resets to 2024 as soon as you connect to WiFi.
I have 2 USB Drives. One is a blank 16gb drive ready to be turned into an installer. The other is an 8gb with the Lion disk image (InstallMacOS.dmg) on it.
Under normal OS circumstances you can get Terminal to create a USB installer by writing from the internal HDD.
I have the two USB Drives. They both turn up in Disk Utility and are Mac formatted ie not FAT.
I should be able to use Terminal to write an installed by pulling the .dmg from one USB and writing it to the other. I just need the right command to do so.
Can anybody suggest the right one?
I don’t have an alternative Mac to use at this time. I tried making a USB installer using TransMac on Windows and that seemed to work but the Mac didn’t recognise it at boot.
