Imac Late 2009 re:install

[bobesch]

Hi there
None yet. I honestly haven't had time to create a bootable yet, a lot covid19 intervention in the family. But I do have another Mac to create it on, a macbook pro mid 10 with Snow Leopard on it.

You may try to clone your MBP's SnowLeopard to the iMac in TargetDiskMode.
On the iMac hold T to boot in TDM.
Connect the iMac via FireWire to the MacBookPro, then use DiskUtil on the MBP to erase the FW-connected iMac's drive (HTFs+ = "macOS Extended Journaled") and clone SL from the MBP to the iMac using either DiskUtil, CarbonCopyCloner or SuperDuper!. You can get previews of CCC or SD! with full function.
Good luck!

 

[mba1975]

Hi there
Thank you for all of your great inputs.
I have Now made an usb installer on My Macbook pro using the disk utility, and the Snow Leopard dvd, That I have.
But My imac did not boot up from into it.

It boots into this screen only ("screen1" picture) pretty much regardless of Any key combination used, during boot up.

I tried to in install Snow Leopard from the usb stick When in "screen1", or recovery the hard disc from the usb, setting "sender" (install media) and "reciever" (local harddisk), but the I get a mesaage saying "cannot recovery - ressource busy" (picture2).

How do I correct this, so it be recovered?

Thanks in advance.

 

[Amethyst1]

So the USB drive doesn’t show up in the boot picker when holding the Alt/Option key immediately after powering on?

The screen you’re seeing is from the recovery of a later version (Mountain Lion or Mavericks); you can’t reinstall Snow Leopard using that.

 

[bobesch]

Why don't you try to just clone your MBP's hard drive to the iMac? #26
(You just need a fitting FireWire-cable, which is quite handy to have anyway ...)

1. Start the iMac in TargetDiskMode "TDM" (hold T-key on booting)
2. Connect your Macbook to the iMac using the FireWire cable. The iMac's HDD will appear at a FireWire-connected drive in Finder or on your desktop.
3. Run DiskUtility and erase the iMacs HDD (MacOS Extended Journaled)
4. Download a copy of SuperDuper! and run it in Trial-Mode.
5. Use SuperDuper! to clone Your MacBook's HDD to the iMac's HDD

Alternative route (needs either a FireWire-Cable or a 16GB-USB-Stick) but the iMac better happens to have an SSD for that ... :
1. Download & launch HighSierra-Patcher-App (or alternatively Mojave)
2. Download MacOS-HighSierra-Installer through the HighSierraPatcher-App
3. Create the Patcher_HighSierra-Installer through the HighSierraPatcherApp:
a) install onto the USB-Stick
b) install onto a tiny 12GB-partition at the very end of your iMacs hard drive: In order to achieve that, the iMac has to be booted into "TDM" (see above) and has to be connected to the MacBook via FireWire-Cable. So the iMacs HDD is mounted at the MacBook. Then run DiskUtility, erase the iMac's HDD and run the partitioning-task to create that tiny 12GB partition at the very end of the drive. After that run the HighSierraPathcher-App and install the patched macOS-HighSierra-Installer onto that tiny partition.
4. Boot the iMac from a) the USB-stick or b) from the tiny PatcherPartition and install HighSierra onto the iMac HDD's first partition.
5. After finishing the installation reboot the iMac again from a) or b) and run the patching procedure (which is BTW a no-brainer)
6. Reboot into the iMacs HDD. If you chose option b) you'll always have the patcher-recovery at hands and you don't need the USB-stick for maintenance.