Not sure if you saw it, but before doing the TDS7104, I refurbished two Agilent 54831 scopes: https://tomverbeure.github.io/2026/03/28/Repair-of-Two-Agile.... For the one that still had a HD, copying the image from to an SSD worked without any issues. However, I also had a 54825A where it didn't work (I sold it, no blog post about that one.) So it's clearly hit-and-miss.
I found the 32 screws of the TDS7104 less of a pain than the dismantling the Agilents which had less screws.
I found the 32 screws of the TDS7104 less of a pain than the dismantling the Agilents which had less screws.